Engine surges occasionally when stopped at a light.
Andy
Andy
Dec 4, 2012 at 5:27 PM
2003 Chevrolet Cavalier Engine Surges Occasionally Stopped Light Andy
2003 CHEVROLET CAVALIER
SIARK
- MEMBER
- 3 POSTS
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SATURNTECH9
- ✓ASE Certified Mechanic
- 30,869 POSTS
Any codes?Have you tried cleaning the idle air control valve?Or looking for vacuum leaks?
Dec 4, 2012 at 7:13 PM
No codes. Cleaned iac valve & throttle valve. Checked for vacuum leaks w/ soapy water.
Dec 4, 2012 at 8:47 PM
SATURNTECH9
- ✓ASE Certified Mechanic
- 30,869 POSTS
You can't look for vacuum leaks with soapy water because vacuum is the absence of pressure and wont blow bubbles.The way i check for leaks is with some carb spray spraying it around at idle and watch for a rise in or fall in rpms stumbling or dying.
Dec 4, 2012 at 9:06 PM
HOMER1967
- ✓ASE Certified Mechanic
- 875 POSTS
there are so many things that could cause a surge. if you have no codes and no vacum leaks i would have to suggest that you take it to a shop for diagnosis.you don't want to waste any money on uneeded parts.there are dozens of things that could cause your issue.
Dec 5, 2012 at 1:45 AM
One last thing-can you tell me how many vacuum hoses there are, and where exactly they're located (it's a 2.2 litre manual). Maybe I missed one.
Thanks
Thanks
Dec 5, 2012 at 9:44 PM
HOMER1967
- ✓ASE Certified Mechanic
- 875 POSTS
no i can not pull up vacum diagrams.
Dec 6, 2012 at 2:18 AM
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