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2009 Honda Accord Misfire
I've had my 2009 Accord EXL V6 into the shop 5 times now due to a misfire on cylinder 3 (code P0303). I've had a fuel injector replaced, the engine computer replaced and most recently, the valve seals (which was supposedly the final solution although I experienced the problem yet again). Honda couldn't find anything wrong with my car after the last breakdown and actually gave me my car back with no repairs. I lobbied Honda to repurchase my vehicle but instead I've been left to wait for the next breakdown for Honda to take additional action. I'm disappointed with Honda beyond words. I've heard from dealers of some similar misfire complaints and I wanted to warn potential buyers. Has anyone else experienced this?
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Honda refused to buy my car back from me so I had to file a lawsuit and am finally making some headway. The service manager near me was honest and said he doesn't believe that Honda truly knows what's causing the misfire problem. I wish you the best of luck and let me know if you have any more troubles.
'Inspected spark plugs No. 1 through No. 4, Found the No. 3 spark plug fouled. Replaced the No. 3 cylinder spark plug and performed the power train control module software update as per Honda Service Bulletin No. 10-033'
Seems to be a very alarming common problem, I still think it's related to the VCM
http://mordor.rutgers.edu/accord/tsb/A10-033.PDF
Have you noticed improvement since you had the service performed?
I've owned:
Cars
1987 Honda Accord LXi Hatch Back
1993 Honda Prelude
1997 Honda Accord EX
2006 Honda Pilot EXL
2009 Honda Accord EXL V6 Auto (current)
ATVs
2000 Honda Rancher 350
2008 Honda Rancher 420
2009 Honda Rancher 420
Mowers
2002, 2006
When I contacted Honda USA Customer Service and asked why would spark plugs which should last 100,000 miles fail at 18,000 miles and they informed me that Alliance should have installed a software update when they changed my plugs at 96,000. Please note the Service Advisory Bulletin was not issued until July 2012.
When I contacted Alliance, the service manager was quick to inform me that the warranty on parts was 12 months or 12,000 miles.
Neither Alliance Honda or Honda USA can tell me what is the "root cause" of this problem and no one has offer me any accommodation for the addition expense that I have incurred related to this issue, nor can they give me any objective information on which I can rely on concerning my vehicle's reliability. Consequently, I do not know if this is a design issue or if the software update is "complete" fix. According the other individual who have experienced the problem, the software update does not appear to correst this problem?
When the engine goes into Eco mode the two cylinder heads shut down but the fuel injectors are still dumping fuel into the heads. By dumping raw fuel into the head with out the cylinder firing causes the fuel to be mixed with oil. This gives you a rich fuel/oil mixture causing the engine to run rich and burning the oil at a greater rate. Also burns out the spark plugs. By updating the vcm with newer software only reduces the amount of fuel released from the fuel injectors when switching to Eco mode. The problem will still exist but now your plugs will foul out every 30,000 miles instead of every 15,000 miles.
Having the knowledge of the combustion engine basic operation helps when dealing with the service centers. My block if being replaced due to damage done by misfiring. Hopefully this helps. And no the vcm cannot be shut off. The engine was designed to work with Eco mode.
I left my car at the dealership and they will be performing the fixes outlined in the bulletin noted above.
See www.enginemisfiresettlement.com or call (888) 888-3082
Stay tuned!!!
Question, So I have a 2009 Accord V6 with 26,000 miles and I should expect this defect to eventually occur with my car?
Anyone know how common this problem is and does it effect every V6?
I'm sad because I love the car and it drives/handles great and it's quite fast.
(I clocked 6.5 sec 0 - 60 time at a amateur drag race once)
Guy at work just bought a used 2009 honda accord sedan. Now he got a recall notice(S) from Honda for valve and a few other recall problems. So looks like Honda MIGHT be doing something about this major engine issues.
That is why I only buy QUALITY automobiles with DEPENDABLE engines! CHEVY ALL THE WAY! I don't believe to follow everybody else because I might get two more miles to the gallon.....
Honda 2005, V6, 36K miles.
DTC misfire cyl 1, 5, and random.
No 1 plug had significant oil residue streak on the insulator above the body.
Found all plugs had oil residue on the insulators above the body.
Replaced plugs, solved misfire problem.
Cause was failure of the two seals in each Denso plug.
Check by removing cyl 5 plug as it is easier access.
Rem plug install torque is 13 lb ft.
I used more current Denso plugs as replacement.
So you just got to keep replacing plugs on a on going solution?
Update, guy at work called Honda Dealership yesterday about recall notice on engine issues, piston rings, valves, spark plugs, bla, bla, bla... They told him if he is not seeing red engine light lighting up then don't bring it in. They WON'T help him! He said recall warranty ends in April this year (2014). They told him then if anything does happen after April, HE will need to PAY.
HE IS NOW GOING TO TRADE IN BEFORE AN ISSUE DOES HAPPEN AND HE WILL NEED TO PAY! Great going HONDA! Feel sorry for next "sucker" buyer. That is why I drive a CHEVROLET! Proven track record with dependable engines....
Oh, his car has 36,000 miles on it.
Whichever way this turns out, Honda goes off my lifetime list for cars - the Honda service centre could not be less helpful. We've taken the car to an independent (ML Cars in Hampshire if anyone is interested) who has been fantastic.