2004 Buick Rendezvous Rough Idle After Start Occassionally Service Engine Soon

2004 BUICK RENDEZVOUS
111,000 MILES
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SLILLIE
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Rough idle after start up and occassionally the Service Engine Soon light will come on and then go off again.
Nov 18, 2012 at 1:58 PM
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HMAC300
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scan for codes and check fuel pressure first. then check for a vacuum leak. also check for hoses with holes in them soft etc.make sure the duct work ging to throttle body has no holes in it.
Nov 18, 2012 at 2:52 PM
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SLILLIE
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Code is P0302
Nov 18, 2012 at 3:05 PM
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HMAC300
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you'll hav eto check your evap cannister for a hose off or bad solenoid or incorrectly routed hoses.
Nov 18, 2012 at 3:18 PM
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ASEMASTER6371
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302 is a missfire code for cylinder 2. it could be a plug, wire, coil, injector ,vacuum leak or low compression. all these need to be checked to find the failure.

Roy
Nov 18, 2012 at 4:16 PM
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HOMER1967
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based on the symptoms,the code and what this vehicle is i would suspect an intake leak when cold.sometimes they only leak when cold then swell and seal up when warm.i would suggest that you take it and have a smoke test done by a shop.
Nov 24, 2012 at 12:20 AM
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