help! code 300, multiple cyl. misfire
Thread Starter
Racer
Joined: Jul 2003
Posts: 446
Likes: 1
From: Washington PA
help! code 300, multiple cyl. misfire
I got this code again last night. (96 auto) Car has sat for about 1 month without running, so wanted to start it and let it warm up to get things circulated. Ran for about 5 minutes and it started idleing rough, than the check engine light came on. It did this right before I put it away for the winter, but went away.
My question is what causes this code, I am going to spend some time on it this weekend. any help is greatly appreciated
Thanks
Darin
My question is what causes this code, I am going to spend some time on it this weekend. any help is greatly appreciated
Thanks
Darin
Racer
Joined: Mar 1999
Posts: 423
Likes: 0
From: Austin Texas
Sinister87 is posting about this same code in the Scan section. This was my post to him on what fixed mine.
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It took new O2 sensors and one fule injector to cure the P0300 my LT4 issued a little over a year ago. The shop manual has a long list of things to do to try and isolate what is causing the general misfire code. I ended up paying out the nose for GM to find and fix it.
Good Luck!.............MickyD
**************************************** **
**************************************** **
It took new O2 sensors and one fule injector to cure the P0300 my LT4 issued a little over a year ago. The shop manual has a long list of things to do to try and isolate what is causing the general misfire code. I ended up paying out the nose for GM to find and fix it.
Good Luck!.............MickyD
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Thread Starter
Racer
Joined: Jul 2003
Posts: 446
Likes: 1
From: Washington PA
Thanks MickyD!
I just got back from the garage. Sounds exactly what you suggested. I also got code 131 (low O2 voltage, bank 1) tonight for the first time. I replaced all 4 of my O2 sensors over a year ago, Maybe I will pick one new one up and replace the one that is throwing the code. I also have a set of used injectors on the way and will install them when they get here.
Thanks
Darin
I just got back from the garage. Sounds exactly what you suggested. I also got code 131 (low O2 voltage, bank 1) tonight for the first time. I replaced all 4 of my O2 sensors over a year ago, Maybe I will pick one new one up and replace the one that is throwing the code. I also have a set of used injectors on the way and will install them when they get here.
Thanks
Darin
