2006 V6 Accord engine misfiring
Thread Starter
Joined: Sep 2006
Posts: 3
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From: Leominster, ma, USA
2006 V6 Accord engine misfiring
2000 Accord EX V6, 133K
I'm having trouble tracking down the cause of some ECM codes I'm getting. Here's the story so far...
On the way home from work the other day, engine started running rough and check engine light came on. Being an hour from home with a Honda dealer just up the street, I stopped in and figured they could help me determine what suddenly went wrong. They could (for $85! - what pals!).
I had them hook up to diagnostics and came back with codes 0302 and 0306 indicating misfires in these cylinders. The tech determined that I needed plugs (I have 133K on the car). He also did a 'coil swap test' and that the ignition coils in cylinder 2 and 6 failed as well. They wanted an additional $340 to change out spark plugs and the 2 coils. I thought that was pretty steep (including the $85 for diag, I was looking at 425 - no thanks)
I did some research and decided on iridium plugs. I also purchased 2 ignition coils from Autozone. I installed the plugs myself (I didn't gap, as several sources on internet said that was not necessary with these plugs). I then installed the 2 ignition coils in cylinders 2 and 6 (from a ignition firing diagram at autozone, they said cyl 2 was the middle rear and cyl 6 was right front as you're facing the engine. I disconnected the negative lead from the batt and waited 10 minutes to reset the ECM. I reconnected and started up expecting it to purr... Still running rough! About one minute later, check engine light comes back on.
I take it to autozone this time for the FREE diag (I'm getting smarter), and I get back codes 0300, 0305, 0306. For some reason, cyl 5 now has a problem, cyl 6 still has a problem and I'm not sure what 0300 indicates.
I'm already $275 into this just on parts and would appreciate some info on what might be happening.
I'm having trouble tracking down the cause of some ECM codes I'm getting. Here's the story so far...
On the way home from work the other day, engine started running rough and check engine light came on. Being an hour from home with a Honda dealer just up the street, I stopped in and figured they could help me determine what suddenly went wrong. They could (for $85! - what pals!).
I had them hook up to diagnostics and came back with codes 0302 and 0306 indicating misfires in these cylinders. The tech determined that I needed plugs (I have 133K on the car). He also did a 'coil swap test' and that the ignition coils in cylinder 2 and 6 failed as well. They wanted an additional $340 to change out spark plugs and the 2 coils. I thought that was pretty steep (including the $85 for diag, I was looking at 425 - no thanks)
I did some research and decided on iridium plugs. I also purchased 2 ignition coils from Autozone. I installed the plugs myself (I didn't gap, as several sources on internet said that was not necessary with these plugs). I then installed the 2 ignition coils in cylinders 2 and 6 (from a ignition firing diagram at autozone, they said cyl 2 was the middle rear and cyl 6 was right front as you're facing the engine. I disconnected the negative lead from the batt and waited 10 minutes to reset the ECM. I reconnected and started up expecting it to purr... Still running rough! About one minute later, check engine light comes back on.
I take it to autozone this time for the FREE diag (I'm getting smarter), and I get back codes 0300, 0305, 0306. For some reason, cyl 5 now has a problem, cyl 6 still has a problem and I'm not sure what 0300 indicates.
I'm already $275 into this just on parts and would appreciate some info on what might be happening.
Honda-Tech Member
Joined: Dec 2001
Posts: 2,716
Likes: 0
From: soCAL, CA, USA
Re: 2006 V6 Accord engine misfiring (butcher38)
Checkout the engine section in this link:
http://autos.msn.com/research/...ccord
So could be your EGR ports. Here is another link that may help:
http://www.automotivehelper.com/topic353517.htm
http://autos.msn.com/research/...ccord
So could be your EGR ports. Here is another link that may help:
http://www.automotivehelper.com/topic353517.htm
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