Mechanics

BUICK RENDEZVOUS VACUUM LEAK PROBLEM

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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Slillie
November 18, 2012.



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.

Hmac300
Nov 18, 2012.
Code is P0302

Tiny
Slillie
Nov 18, 2012.
You'll hav eto check your evap cannister for a hose off or bad solenoid or incorrectly routed hoses.

Hmac300
Nov 18, 2012.
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

ASEMaster6371
Nov 18, 2012.
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.

Homer1967
Nov 24, 2012.