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2000 Chevy Cavalier Idles rough and stalls

Tiny
RONP78
  • MEMBER
  • 2000 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 12,800 MILES
My car idles really rough and stalls wjhen I am at a red light or stopped in traffic. I just had a timing chain, fuel pump, o2 sensor, and a fuel regulator installed. And the car still runs rough at idle. Also when I am driving on the highway, it feels like its losing power when I try to accelerate. Can you tell me what the problem could be? Thank you.

Sincerely,

Ronp78
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Thursday, March 19th, 2009 AT 11:50 AM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Check engine light ever on? Has engine compression been checked?Wires and plugs?
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Thursday, March 19th, 2009 AT 12:54 PM
Tiny
RONP78
  • MEMBER
  • 2 POSTS
Yes, the check engine comes on and the code reads P0171. "SYSTEM TOO LEAN"

I have no wires. The spark plugs are new and I had my coil pack installed at the beginning of 2008.
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Thursday, March 19th, 2009 AT 7:56 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Check EGR pull clean pential and passage ways. Also clean MAF in air intake. Then engine ideling spray some carb cleaner around intake, throtle body. If vacuum leak when spray hits area it will idle up smooth out.
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Friday, March 20th, 2009 AT 3:23 PM

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