Honda Accord Hybrid Engine Problems

After 5 days and several phone calls I finely have a response from my local dealership. They had been waiting to hear from the Honda engineers and while they still are not sure what is wrong with my car they are going to replace the computer that interfaces with the electrical components of the car. The dealership believes that I will have my car back some time late Monday. This is the second time I have been without my car for over a week. I will not be recommending this car to anyone. Although I believe in the technology I don't believe that the local dealership knows enough about these vehicles.

I'm think I'm having the same problem as Daya with my 2005 hybrid Accord. Tune your stero to a quiet spot and turn the bass up as loud as it can go and it will sound just like the engine of my hybrid Accord. It's impossible to drive for long with that vibrating engine noise, it's that bad. The dealer is just playing games at this point. I took one of the techs for a drive and we both heard the sound clearly. He couldn't pinpoint what it was and said he'd never heard anything like it. Now, he says he can't reproduce the sound. I can't understand why that matters, as he couldn't figure it out by the sound the the first time. I just want it fixed. If anyone has any ideas, please post.

I have had the same problem with the noise. It's so bad my son hates riding in the car - it bothers his ears with the vibration. If you hit the gas pedal, it tends to stop but it can be constant. My Honda dealership said the engineers are "working on it" and that I'm not the only one but from a consumer who doesn't buy new cars every three years (last purchase 1997), I'd like to dump this car - loss or not.

I'm sorry but you have realize that with thousands
of Honda Hybrids being sold every month that there
has to be some that have parts that are faulty.
I had an idea for hybrid buses 26 yrs ago and a
few yrs. ago spoke over nationwide radio on the
environmental benefits of having all hybrid vehicles.
I drove the very first Honda SU2000 that came into
the country in May 1999 while the other 5 that were
made stayed in Japan waiting for the test results.
I bought one of the original Honda Accord Hybrids
made last year in March. It was quite incredible.
Completely quiet and faster than anything imaginable. The take off isn't all that impressive about like a RX-8 or Porsche 924 But the top speed
and fuel economy blow away any high preformance car made. I suspect the dealers in the U.S. need to have some of the Japanese designers come here to
consult these questions. I think the fuel module can cause significant problems with running if its going faulty and the synergy system may not be grounded properly causing the noise. Good luck, If your car isn't flawless you need to take it back, I spent 40K on mine (36.8 + 3K on getting the 1st one which I suppose they meticulously tested)The GPS works better than any other one I've used.

It's not an engine problem, it's due to a faulty ANC (active noise cancellation) unit. Tell your dealership to look up S/B 06-005.

I have a 2005 Accord Hybrid that just came out of the shop. The check engine light and oil light illuminated and the car shook at the front end when making a sharp or U-turn (this happened three times in a 24-hour period... the temp fix was to turn the engine off, restart, and the car would operate normally). It was a faulty oil pressure sensor (regulator?). The dealer replaced it under warranty, but had the nerve to suggest that I take it home and drive it for 4 days until the part shipped! Of course, i refused and got a rental vehicle instead. Good luck to all with problems. I haven't noticed the noise cancellation problem, but I do hear an occassional rythmic tone from beneath the hood that is only audible when outside of the vehicle.

I have a 2005 Honda Accord Hybrid. I upgraded from the Honda Civic Hybrid, which I loved. The Accord is comfortable and handles well, but I've had the problem with the vibration roaring noise as well. I've had no other problems with the car. The dealership told me the noise is normal, but still did several software upgrades and replaced a sensor in the IMA. I don't hear the noise much anymore, but I don't know if that's because it's cooling down now (autumn) or that the problem has been fixed.
I still plan to call the dealership about the part listed to see if they replaced it.

I purchased my Accord Hybrid 2006 in Ferbruary. I have not experienced any of the problems mentioned. Tell your dealer the popping noise is not normal.

replacing the ANC unit fixed all the vibration\humming problems.
Thank you to whoever posted that.
The dealership had no idea, but I told them to look up the service buleting as you pointed.

Manuel

For those having this pop / clunk / backfire noise, here's another forum documenting the issues:

http://www.greenhybrid.com/discuss/f27/engine-malfunction-13795/index5.html

Any fix for this problem yet? I have it Too!

Mine was Built 04/2007 it has 200 miles and NO problem at all.

When I should expect to start hearing the first symptoms?, or it could be that mine does not has the problem?, thanks

contact your dealer and talk to him about the problem, it's part of his job to help you..

Ok Here is something weird! I have a 2007 Accord EX-L with the 4cyl and 5 speed. My car makes a muffled popping/backfire type sound that can be heard and felt. It seems to come from under the front passengers feet. Honda can reproduce the problem but has no clue what is wrong. I'm wondering if this is not a hybrid issue but a Accord issue. Any thoughts.

Can you please send me that service bulletin? I am having the same problems with the vibration. Thanks for your help, I really appreciate it. Mattannen@gmail.com

Just had A.N.C system replace by Honda dealership, cost about 380.00 for parts plus tax, and 2 hours for labor. So about $650 overall.

I have a 05 Accord hybrid & get droning sound whenever I am at 55mph. Dealer told me it was the electronically set engine mounts and fixed it under warranty.

not sure if you got my previous message, so sending again...
I have the 05 Honda Accord Hybrid. It is making the droning sound when coasting at 55mph. I can also hear it at 40mph. Today (till tomorrow) the dealer is replacing the ANC. However, will this solve the problem? Is the "engine mount" issue the same thing?

I have the loud droning/humming noise when the temperature warms up. Would you please send a copy of the service bulletin to janet.courtney@comcast.net.

Thanks much.

I have spoke to my dealer (St. Louis, MO) and to a dealer in New York. Both have told me that the ANC part is on a "National Back Order." I was told all Hybrid parts ship directly from Japan. Either there were insufficient parts in stock or not enough were made. The previous release date was June 19-there is no release date set. Let me know if anyone has been able to locate the part. Thanks!

jhgollon@hotmail.com

I would be interested in seeing this Honda Bulletin. The vibration in my 2005 Accord Hybrid is getting worse. No help from the dealer. Usually happens around 40 MPH.

I also have the loud bass type noise happening in my 2005 Accord Hybrid. I brought it to the shop this morning and they said that they know what the problem is, however, they haven't told me yet. Could you please send me the bulletin as well? Thanks!

chrissiegalop@hotmail.com

Please send the service bulletin. I am experiencing the same annoying humming/droning noise with my 2005 Accord hybrid.

Just had this item repaired by the dealer August 2008. Out of warranty but Honda of America provided Good Will Assistance. Issue was a faulty Active Noise Cancellation (ANC) unit referenced in the below link. Total cost to repair $611 - which included the unit and replacement of the two from speakers. Honda covered the parts, I ended up with the labor - $150.

This link has a copy of TSB 06-005.
http://www.driveaccord.net/forums/attachment.php?s=0bf76aa5c852b3a71d08a ..

Hi
Do you by any chance still have the service bulletin for the humming noise?
Thanks
Tim

I too am having the same loud humming noise, intermittent. 2005 Accord Hybrid. Has been doing this since day one, dealer says it is my engine mounts. Please send me the bulletin.

Thanks

YES!!!! I have been told it was my valves.... It comes on and off whenever it feels like it. Let me know what you find out Please.

2005 Honda Accord Hybrid just plain sucks.

I have a Honda Civid Hybrid 2003, I can´t used it cuz the Transmission is very delicated, I did repared it 3 time in this year, for the same problem, for every one I have to spend a lot time to get the body parts, and a lot money too... each repair was work only one week, and the piece was damaged again.

Somebody help me. giving me a advice.

In regards to the annoying, loud, humming sound: The accord hybrid can deactivate 3 of the 6 cylinders for optimum efficiency. This causes a loud, base, "thumping" sound. The car's stereo is fitted with a noise cancellation device with a microphone in the overhead light fixture. It works like Bose Noise-Cancelling Headphones. The stereo (whether on or off) sends out an opposite sound wave to cancell out the engine noise. Some of the cars developed problems with the microphone, so you could hear the out-of-phase thumping sound out of the speakers. It is a known, easy fix at the dealership. I have heard the noise in my car two or three times, but not enough to bother getting it looked at. From what I've heard, they treat it like a recall.

Regardless of the other posts here, I think this car has the best combination of power and efficiency out there! 255 HP, and I can get 42 mpg on the highway if I drive it like grandma. (that's driveway to driveway, Boston to Maine.) On the HW, with cruise set at 70, I usually get 35 - 37 mpg depending on the roads. That's the beauty of cylinder deactivation!

I to have a 2005 Honda Hybrid with the noise issue. The first time I took it in, the dealer said it was the speakers and replaced them. I haven't returned. Like other folks have noted, my vibration starts around 40 mph and will continue until 65 mph. It's worse in the hot months and you can tap the accelerator to get it to stop momentarily. It appears to be a vibration set up by harmonics in the drive train....meaning once the drive train vibration starts it tends to vibrate other components in the car. The interior noise in the car in much higher than it used to be. Maybe it is a noise cancellation issue. If anybody has a fix, please let me know.

Hi
Wow, I just love this kind of stuff. This is the first time, I, visited this website and really like this one. Please keep updating me one this.
CSK
Homes For Sale

I have read all previous posts, I'm not buying Honda Accord, but still wish to buy a Hybrid, as sharp saying?

Hi,
We are a group of students from Imperial College in London and as part of our MSc in Environmental Technology, we are studying the comparative influence of several groups of parameters on car-buyers' behaviour. We would be very pleased to collect answers from car owners and especially hybrid cars owners in order to draw relevant conclusions from our statistical analysis.
By filling in this survey, you will enable us to collect valuable data for our research. Of course all these data will remain strictly confidential and anonymous, and will not be diffused to anyone outside the academic staff at Imperial College.
here is the link to our questionnaire, it should not take you more than 4-5 minutes to fill it in:
http://www.surveymonkey.com/s.aspx?sm=qUdncbQF8Q0tUJYBq85DYA_3d_3d
Thank you very much for your time.

Mine makes this noise at 1600 RPM only--I would appreciate hearing your experience.

Did you ever get the problem fixed. It is the same problem I am having and my mechanic doesn't know where it's coming from. Any help would be appreciated.

I bought a 2005 Hybrid Accord 4 years ago and in July 2009, I started hearing the humming sound and it exists around 45-60 MPH. The performance of the car is unaffected, but the humming sound is so annoying. Thanks for the service letter. Gotta go...I'm off to the dealership. Thanks for the tip!

change out that honda evil battery with a high power pep boys battery, that honda 07 accord hybrid runs like a powerful chevy.

I have a 2006 Accord Hybrid that was a dream car the first year. No problems.
Last winter my mileage started to drop both local and highway from 28-34 to 24-28. They did a computer upgrade and things were fine again. Then the auto-stop quit working when I first started up the car and would take a few minutes to kick in. The dealer said it was because of the cold. The temp range is 10-100 degrees. I said OK. But this summer both problems reoccurred. I've had it in several times with nothing found. On my last vist (armed with actual mileage) they had it three days and say they can find nothing wrong. They say it's working within the cars parameters.
Anyone else having mileage or auto-stop issues?

I have a 2005 hybrid has anyone experienced that when coming to a stop or applying the brakes at over 40 mph it seems like the front end makes a humming or rattling noise and my check engine keeps coming on and off and the auto stop has been working on and off and I noticed a drop considerably on my mileage. Has anyone been told why or how come??? It took 4 visits to figure out that I need the anc changed I don't want to be without a car since the nearest Honda is about an hour away..

AIDA,
Haven't heard of the brakes issue. You could try a local independent mechanic, but may ultimately end up at the dealer. (p.s. I changed your post so it was not ALL IN CAPS. People may misconstrue it as yelling.)

SSquire,
Your vehicle is probably still under warranty for the IMA.

--
Eric Powers

My IMA light came on last year. It was covered under the longer Hybrid standard warranty. I forget what the time frames are, but all parts of the car directly associated with the Hybrid system (batteries, IMA, etc...) are covered for a longer period of time than the rest of the car and power train. They either updates the firmware or replaced a computer part, I forget which, but was completely covered under warranty.

Other than that fix, and the annoying droning sound in the summer, (doesn't bother me enough to get the microphone replaced), I've had no issues with the car. Runs great, excellent mileage, goes like a bat out of hell.

The experiment of using hybrid technology to boost performance, rather than improve fuel efficiency, backfired in the marketplace. Case in point: the Honda Accord Hybrid.I have a 2005 Honda Accord Hybrid. I too have the droning sound in the summer months only and it cost too much to fix and now that it is cold that problem is on hold as the cold caused my IMA light to come on and the electric part of the hybrid no longer works!

------------------------------------------
Michael Gentry

"dofollow"> Melbourne

Hey Guys, I notice that a lot of you people have this problem too. It actually not the engine, but the stereo system. It must have something to do with noise cancellation system.

This usually happen after a long drive, the stereo for some reason produce this noise that sort of sound like the engine but it actually not the engine.

A computer upgrade solve the issue, with no cost to you.

I had a serious humming/vibration sound at about 20-30 MPH on my 2005 Hybrid. It turned out to be engine mounts that had gone bad and needed replacing. That solved the hum

are there any 1st genration insight owners with weak batteries and faulty IMA computers out there? does anyone know a way to convert the hybird to a regular ol' gas engine car? i have tried but low and behold this beastette has no altenator so the car goes dead after awhile.

Mar 2010 I bought a like new 07 NAVI HAH with 2,800 mi. I experienced the drone sound on the eight hour drive home after picking up the auto. I learned about the SB from this forum and lucky for me Honda will fix the ANC under warranty which runs out in April 2010. I'm thrilled with the driving experience. The HAH is more refined in the little details vs a equivalent V-6 non hybrid. It looks better (side mirror lights/taillights) and rides better with 16 inch tires and 200 extra pounds. It's quieter due to the battery compartment serving as a sound barrier. I'm getting 34mpg on the NAVI readout without the engine being broke in. You can make the case for this car not because its a hybrid but because of the features, VCM, autostop, electric power steering and other non electric motor tricks to improve FE. With the depreciated prices the HAH is a value when you consider its FE and refinement.

I am thinking about buying an 05 Hybrid,took it for a 15 min test drive and could not hear any of the issues that are on this board.Also no vibration of any sort.It has 75,000 miles on it and feels like you are driving a high end sports car.After reading these posts I am having second thoughts about buying it.

Never mind, I found a link.
driveaccord.net%2Fforums%2Fattachment.php%3Fattachmentid%3D23972%26d%3D1249762284&rct=j&q=Humming+or+Booming+Comes+Front+Speakers&ei=msPDS-35OcT68AaixfjjCA&usg=AFQjCNH2Ij79yjtOSqSjfY1AyuWo-sYSSQ&sig2=qPFzj2PooULuaNNjtI67Og

let me know if this helps

Can you send me a copy of the bulletin if you still have it?

Thank you

I too have the Accord noise cancellation issue where the sound drums the hell out of you. Would appreciate the bulletin. thank you

honda hybrid is the greatest i have ever saw....maybe urs is faulty from factory.

Hello,

I bought my 03 civic hybrid in 04. Haven't had to many problems with it until this last March. The IMA light came on so the battery was changed out. I live in Washington State. We drove the car to Texas and back after we had the battery changed. The only thing that happened on the trip was the IMA light came on. We twisted the gas cap and it went off, but also noticed the bars for the big battery was low. We made it home and it seemed to run fine until this last Thursday, May 20, 2010. I went to get in my car to go home and it was acting strange. When I put into drive and started to drive it was hard to stear. So I drove it around the parking lot. It was like the power steering wasn't working. I wanted to get it home and the power steering had kicked in so I went to drive it home. Didn't make it. I maybe got about five miles away and it stalled. I couldn't even get it into neurtral to get it off the road. I managed to get a jump and did get the car home. Next day went to take it to the dealer and it would not start. Had it jumped again and got it to the dealer. They ran the computer check and said there was nothing wrong with it. I must have left the lights on. OK. Saturday went to get in the car and it would not start. Husband took the battery out and took to Auto Zone to have it checked. The battery is so dead the can't check to see if it is good. They finally get it charged enough to check and they say the battery is good and charge it. I drove the car Saturday. Seems to be fine. Sunday car won't start. Call South Tacoma Honda Monday. They tell me to bring the car over and leave it overnight. They just called to tell me I need a new battery a regular battery. I will play the game just because I want to harrass them. After reading these posts I am not sure they know how to fix them after a new IMA battery goes in. I am starting to think that you need to get a new car before the IMA goes out. I would not buy another hybrid!!!!!!!!!! If you have one get another car before the battery goes out!!!!!!

2005 Hybrid Accord. 90,000 miles on it. Other than the noise cancellation issue that was quickly fixed by finding the problem and solution on internet, simply printed a copy and took the notice & the car to the Honda dealership. I also had the engine light/rough running issue and
found out either I needed to twist the gas cap 3 times after it first clicked or if that did not work, replace my gas cap. Twisting extra 3 twists to assure it seals has worked ever since.

I would buy another Hybrid Accord if Honda still made one. Great pick-up, gets great mileage on the open highway even at 85 MPH or in the mountains.

Good mileage in town. Comfortable car. This is my first Honda and I am amazed. My extended warranty is running out in 10000 miles and no one seems to know when the "hybrid" battery will require replacement so I went out looking at other Hybrid options today. When I came back, I checked on internet for issues some of these have. Wow. Maybe this battery will last another 90,000 miles.

I would LOVE to hear what this problem is. It's been 5 years and no dealer can ever help us. It's a terrible low rumbling sound which is worse in warm weather. Any way to fix it would be welcome. Thanks!

It's lonely being the owner of the Accord Hybrid. Anyway, problem was solved when I had the car towed back to the dealer and THEY couldn't start it, so they actually went to work and found the connection from the battery to the starter was loose in some way. I'm doubtfult, but I haven't had any problems since - but then it hasn't been below 10 fahrenheit since either.

I bought a 2005 accord hybrid in may of 2005. About a year ago, or maybe a little longer, I started to notice the rumbling noise. I thought it was the tires I had put on it 2 years ago, as they weren't the same as the original michellins. The noise is very annoying and my family complained so much (i was starting to get used to it) I did research on it and found references to TSB 06-005 which described the problem exactly. I just took the car to the dealer and they quoted $476.34 for parts and labor for the kit. I asked about hondas goodwill program, but was told that since my car is so far out of warranty its unlikely they will help with the cost.
Anyone else have any experiences with this issue when their car was out of warranty (mine is 5+ years old, nearly 50k miles)

my 2005 accord hybrid makes the same exact droning noise usually only in warmer weather...car has 98k miles on it im thinking the dealer won't help me...i wish there was a do it yourself on fixing this ANC...also over the winter my IMA light came on and i brought it to my buddy who owns a mechanic shop and he hooked it up the computer and it said that the temperature outside was around 90 degrees when it happened, and that i had negative air flow (apparently when the light comes on the car's system takes a snapshot of the current conditions)...funny thing is though is that it would be impossible for it to be 90 degrees outside because i live in ny and it isnt 90 degrees in february which is when the light came on...wondering if i have bigger problems...any advice???

I had the same exact problem and I guarantee you the noise will come back during warm weather. The problem is that it's a faulty Active Noise Canceling unit located behind the radio/Nav system (if you have one). The part is - 06390-SRD-307 Speaker Kit. It comes with the ANC unit and the speakers. If your car is still under warranty, have Honda do it. It should be covered. My car had 60k on it so I was out of warranty and Honda wanted to charge me over $700 so I did it myself and believe me I'm not that handy so it wasn't really easy but I was able to do it. I bought it at www.majestichonda.com for $262.00 and I bought a Service Manual for my year, make and model on ebay for $25.00 and it basically instructed me to remove most of the center console to be able to slide out the Radio/Nav display. The ANC unit is mounted to the back of that NAV (HVAC) section. I made a 3 part video that I posted on Youtube so that you could see the exact procedure.
Here is the link to part 1
http://www.youtube.com/watch?v=w6IKK-C1-QQ

Part 2
http://www.youtube.com/watch?v=T8ouA_fcIRY&NR=1

Part 3
http://www.youtube.com/watch?v=KZHM2...eature=related

Hope this helps.
Paul

I have an 06 HAH, had the check engine light issue along with random misfire codes. Two bottles of lucas fuel injection cleaner fixed it, its been good for 10,000 miles now.

Please email me the bulletin. Thanks in advance.

A.M.

I think part of you link got cut of, can you please email it to me? Thanks.

Oh I would love to get a copy.

Thank you in advance.

VB

I bought a certified2007 Honda Civic Hybrid about a year ago. In August I received a IMA recall letter and made an appt to get it done. After they performed the update my check engine light keeps coming back. First they said it was the computer, they replaced it, 2 weeks later the light came back, then Honda dealership said it was that I needed another computer replacement as it was faulty, 2 weeks later came back on, I took it back they could not find the problem. 3 days later they said the wiring in the harness had been chewed by mice or a squirrel (I have lived in the same house for 24 years and my husband has the same type of car except not a hybrid and mice nor squirrels have chewed on any of our many cars we have had) but anyway we paid the $280 for replacement of the wires - yeap 3 weeks later the check engine light is back - Please help

I am having the same issue

If you can email me the like I like to fix this problem

I went to the delar ship and they tell me its my ima moter which will cost me 2k just for the motor. + labor and special parts that they have to order to replace it

My 2005 HAH's (71k miles) IMA and check engine light went on this morning but it seemed to drive just fine. I didn't want to drive around with the light on, so I took it to the dealer and they said it was a software update for the battery pack related to service bulletin 07-003. My invoice says "cont code B99" and "fail code 07201" if that means anything. They said it was covered under the factory warranty, not my extended Honda Care warranty (I have 7yr/100k miles). Light is off and car seems to running fine. Hope I don't have another problem anytime soon.

I also took my HAH to the dealer in Jan 2009 for the check engine light and they told me it was service bulletin 07-016 and they recalibrated PGM-FI wtih HDS (whatever that means). They told me that one was not covered by either factory or extended warranty, but I complained to Honda Care (called them while I was at the dealer) and the dealer waived the fee as a "courtesy". They still charged me $29 for the tech to look at it though. Invoice said "cont code 0320" and "fail code 0321".

I have a 205 Honda Hybrid. There is some serious cracking/tapping noise coming out of he top cylinders. I have tried everything I could to get rid of the problem but all to no avail. The noise is coming from the rockers (or assumed so).

Has anyone experienced similar problem and how did you resolve it?

Okay....anyone know what is going on I have a 2005 HAH I had my timing belt and tensioner replaced a year and a half ago....it has a 104,000 on it right now....anyways....my check engine light came on and it started idling rough. I towed it in the honda dealership they said my timing belt had jumped a couple teeth...got lucky i didn't trash the engine....anyways i took it back to installed my timing belt they reimbursed me the price honda had charged just to diagnose what happened...and they put on a new tensioner....so far the car is running good....however, the repair guys said they can't guarantee it won't happen again....they said their may be harmonic noises which may make it shift again...and jump teeth again...does anyone know anything about an underlying problem with this engine?

Please send me a copy of the service bulletin. I have gone through the steps of clearing the noise, but it doesn't last for long, and comes right back. Thank you.

2005 accord hybrid. doesn't seem to be shifting to battery power. started out by hesitating alot and thought it had died on the highway, but then shifted to gas. check engine light came on at the same time i noticed the problem. 128k miles.

I need the bulletin too, someone please email it to me. Bugflector2@yahoo.con

I have a 2005 accord hybrid, the noise issue was fixed for me the first month I owned the car back in 2005. The only other issued that I ever had was the check engine light came on and stayed on and the ima stop working. This happen at the 100,000 mile mark. To fix this issue, get the valves adjusted. I have been perfectly happy with the car. It's the first foreign car that I have ever purchased. I have owned fords and chevys in the past and they have always been 10 times more in the shop then my Honda has been in it's lifetime. I been so impress with the car that I just purchase my second Honda vehicle.

could someone send me that service bulletin from the honda dealer please. i can't take this noise any longer. thanks

107,000 km, 95% highway driving. Engine light came on for 3 days, then out. Took it in for oil change, and asked for a report. Catalytic convertor needs replacing plus the two sensors, one in front, and one behind, plus a control module. The convertor is under warranty still.Total price around $2,600. It is 2006 hybrid Accord. Any suggestions. Thanks bajar de peso

Hi, I was reading on 2006 Honda Hybrid because were are about to purchase one in the next few days. It is now 2011 and would like to know what was your experience with the car?

I have a repair kit for $50. that will stop the thumping noise .You can contact me via email

I, too, am hearing the chirping noise. Did you get this problem solved. If so, would you share with me what caused the problem?

i want to know what type of assembly housing is use for
ISA ie motor and generator for reducing the magnetic path
and transferring of micro signals to the other important
Electronics circuit.
ARP

I have the same humming noise on my 2005 Honda Accord Hybrid and the dealership told me it's the ANC issue and not an engine problem. The noise tend to go away when I accelerate and I'll rather deal with a temporary noise than spend $800 on noise cancellation on 112K mile car.

I have an 05 HAH. I've had the humming/vibrating noise for ever but got used to the noise. Always serviced and maintained. Has 136k miles. On my normal drive last week, my dashboard lit up with all error messages (check engine, !TCS, steering wheel symbol, speedometer stopped functioning, and the letter D on console flashed, some loss of power like driving in downshift). I took it to independent reputable Honda mechanic and he told me to take it to dealer. Dealer says $5-6k for tranny and $4-6k for "other engine troubles" they can't diagnose or guarantee, but they would try to pinpoint with "more diagnostic" testing for $450. Then basically told me to walk away. I'm confused since I've never had any major issues with this car and the service at dealer can't really tell me with certainty what else is truly wrong with my car. To top it off, I'm on my last stretch of payments on my car loan. Any suggestions or HAH mechanics in San Francisco area please let me know. I'd rather pay someone who knows about these cars $450 to give me true diagnostic results without charging more because they can't figure it out.

Would you mind sending the service Bulleting from the Honda Dealer regarding a Noise Cacelaton issue?
Thank you.

Could someone send the bulletin as well. The noise is driving me crazy!

Great job ppl. All your posts on the ANC have been really helpful and probably have saved me 100s of $$$ in labour costs. Once I get the part I will change it in the driveway instead of paying my local mechanic.

Special thanks to Paul for making that video!

Here is a new one for you...

I noticed someone posted about misfires on cell 3. I too had the same problem except I had multiple misfires. Cell 2 turned out to be the problem. My rocker arm jammed in the upright position which also bent the bar. For you non-technical ppl out there (such as myself) this meant opening up the motor. My HBH has over 170k on it already for forget about any warranty.

I got the car back last week but now I have this horrible knocking sound that happens whenever the assist kicks in (blue lines). The noise is especially loud when i am in the 1500rpm range at lower residential zone driving speeds.

I dont have any warning lights on....

Has anyone else experienced this problem?

Scott
Ive had the same issue as you with the rocker arms on the rear head exceptt mine was on #3. It cost me just short $1600 to fix. The car has had an intermittent backfire sound for a while, even before the rocker arm problem...Ive had it to the dealer several times but no one seems to be able to isolate the cause. Ive read other posts with this problem but no solutions. Its frustrating to say the least.

스포츠토토 솔루션 제작해드립니다 .

.주요기능/.

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충전 및 환전 신청이 있을시 알람이 울립니다 .
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Still have the kits?

having same problem has any one found out what the problem is with the bass sounding noise?

Please send me the bullitin you found about the 2005 honda hybrid drowning sound and the Honda fix if you can. Thankyou. John Mils

Did you purchase it? I bought my 2006 HAH new; last model year (although I didn't know it at the time). I like the car, more than most that I've owned. Fuel efficiency isn't as good as I would like in a car, but I can't justify replacing this one yet. No overwhelming problems. Maintenance expense is just under par with most other vehicles I own now or have owned.

Keep in mind that when reading these posts that they are self-selected. Most people only post when there are intractable problems and they're angry.

If the IMA batteries fail the car simply reverts to a regular V6 accord with 3 cylinders cruising feature similar to currently selling accords.

My 2005 hybrid accord is driving the wife and I crazy. The local dealer says they can't replicate the problem. They must be deaf as the drone seems to be getting worse. I was wondering if you still have the service bulletin and if so, could you e-mail me a copy so I can show these knuckleheads? Thanks in advance, -Chris

pin point right. took my vehicle to my local dealership and it did turn out to be the problem. (noise cancellation unit) needed replacement.. Since then my car is running smooth with no humming or vibrating sounds at all.. excellent post. thanks.

Thanks Dick2005 for your post. I dont have a NAV system in my car but gave it a try anyhow. All it did was turn the screen off. Not a bad trick regardless. Many nights I have been driving and wished I could black out the radio screen. Now I can.

The Service Bullitin is valid for the USA only. Honda Canada does not recognize that there is an issue. (insert choice words here).

If you do cough up the $500+ for a replacement ANC unit be sure to view Pauls video. He did a great job at explaining how to do it in your driveway. His link is posted somewhere above.

I guess nobody else is having the knocking at 1500RPM's when the ECO is activated (in the blue zone)? If you do (or did) let me know if you are able to fix it. My mechanic is still stumped.

I have a 2005 Honda Accord Hybrid and I have experienced the humming noise for years and when it starts I give the gas pedal a quick tap to increase the RPMs and that usually turns it off, at least for ten seconds or so. I appreciate seeing the instructions about turning the noise cancellation on; I'll try that. I also have been getting a squeeling sound during the summer when it gets hot and it usually happens when I'm turning the steering wheel, although it didn't happen this summer. Several years back I took it into the dealer about these problems and they told me they could not duplicate the humming or the squeeling and that Honda had not issued anything about such problems even though I saw other Accord Hybrid owners complaining about it on the internet. I think Honda just wants to sweep the problem under the rug rather than fix it.

Recently my Accord Hybrid began running very sluggish, like it's got half the power. The engine light blinks when this is happening. I took it into an independent repair shop and the mechanic drives an Acura so he's very familiar with Honda. He did a computer diagnostic and said my car was firing on three of the six cylinders and its ignition coil and/or spark plug related. This will cost between $300 - $600 to repair. He said ignition coils going bad on a Honda is very rare. Just my luck.

I have accord05, hybrid since two years with no major problems, nowadays I started hearing some noise when I switch the ignition on the morning the noise is clearly heard if the weather is colder, however this noise completely disappear whenever I start the ignition on the car on the daytime where the engine is relatively warm. the last maintenance I made before two months I replaced the engine oil, and the technician load my car with 5Litter oil instead of 4.3 Litter which is the standard volume recommended by HONDA, I don’t know if this affect on the engine or not.

Your kind assistance is highly appreciated

B R
Ibrahim

following up on what "Dick2005" i have the procedure but for the non NAV/GPS version of the '05 accord hybrid.

"if you do not have the NAV unit follow this procedure.
1. Turn the ignition switch to ACC (1) or ON (11)
2. Turn the audio unit ON.
3. While holding down both the "Preset1" and "Preset6" buttons simultaneously, press the AUDIO PWR knob.
4. "DIAG" will appear on the audio unit display to indicate you have entered the self-diagnostic mode.

NOW, while in Diag mode turn the ANC ON to OFF by pressing the #1 button, A LOW
frequency hum (50HZ) should sound for up to a minute. While this low frequency HUM is Sounding turn the engine on and the HUM should GO AWAY. Now drive your car and see if the low frequency drone has gone away! "

I have tested it and loved it :D i hope all of you find this useful!
Link:"http://www.driveaccord.net/forums/showthread.php?t=62601"

My apologies in advance for any hardcores or passionate mechanics out there, but I have a pretty bush-league fix for the ANC issue, and it's FREE. I was waiting to see if there were any adverse effects (I did this on my 2005 HAH about 9 months ago when the droning noise ramped up in the warmer Spring weather once again). I've put about 20,000 miles on it since, and nothing is different - except for an absence of the noise.

Basically, all you do is unplug the ANC unit that is on the back of the stereo. There is a great YouTube video series (search 2005 HONDA_ ACCORD_ HYBRID ANC_replacement_Part01, then part 2 and 3) on how to remove the radio and access the ANC unit. If you want to order the part yourself (at a cost of around $3-00ish?) you can complete the project, but if you just want the blessed noise to go away, just unplug the unit.

Cheers!
Moose

I have a 2006 honda hybrid and I have the popping nois or back fire noies. Is there a fix for this.

Please send me a copy of the bulletin, it may help my situation with noise.

Thank you