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Teching In
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No code I have a 58 pu with a 2004 vortec. Ive driven this truck for a couple years with no problems. The other day I had a problem at idle. After running hard, it has rough idle and sputters off of idle. If I drive it easy for a short distance it smooths out. I changed the o2 sensors with no change. computer is not giving me a code. Any ideas? Thanks Mark
Thread Starter
Teching In
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Thread Starter
Teching In
Joined: Nov 2007
Posts: 13
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From: rosemount,mn/windsor locks,ct
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Thread Starter
Teching In
Joined: Nov 2007
Posts: 13
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I pulled the MAF and cleaned it, checked for vacuum leaks from air cleaner to the head and no luck. Same problem, rough idle after hard acceleration. Smooths out after short distance. I think it must be some sort of vacuum leak but it is undetectable so far. Thanks for the ideas, any others would be appreciated. Thanks Mark
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Does the problem only happen when the engine is cold? If you idle after driving for a while is everything OK? If you re-start the engine while its still warm, does the problem come back?