Rough idle after start up and occassionally the.

Tiny
SLILLIE
  • 2004 BUICK RENDEZVOUS
  • 111,000 MILES

Rough idle after start up and occassionally the Service Engine Soon light will come on and then go off again.

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Sunday, November 18th, 2012 AT 1:58 PM

5 Replies

Tiny
HMAC300
  • EXPERT
  • 45,767 POSTS

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.

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Sunday, November 18th, 2012 AT 2:52 PM
Tiny
SLILLIE
  • MEMBER

Code is P0302

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Sunday, November 18th, 2012 AT 3:05 PM
Tiny
HMAC300
  • EXPERT
  • 45,767 POSTS

You'll hav eto check your evap cannister for a hose off or bad solenoid or incorrectly routed hoses.

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Sunday, November 18th, 2012 AT 3:18 PM
Tiny
ASEMASTER6371
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  • 25,554 POSTS

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

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Sunday, November 18th, 2012 AT 4:16 PM
Tiny
HOMER1967
  • EXPERT
  • 902 POSTS

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.

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Saturday, November 24th, 2012 AT 12:20 AM

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