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Old 01-14-2010, 07:26 PM
j cAT j cAT is offline
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Re: miss fire when cold please help

Quote:
Originally Posted by ocpman View Post
Its random miss fire in every cylinder. I watched the missfire counter on my scanner. I'm not concerned with the cat at this time, mainly the cold missfire. I will figure out the cat afterwards. The missfire only when its cold. It also only missfire at idle. Off idle the missfire counter go to 0, and the engine runs smooth.
fuel pressures and plug cat converter are known to cause radom miss fires...if only when cold most likely the fuel pump is weak...need more fuel when cold...
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