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Idles rough when gas pedal is pushed and it shuts off

Tiny
OHKNOWU812
  • MEMBER
  • 1989 CHEVROLET CAVALIER
  • 2.8L
  • 6 CYL
  • 2WD
  • MANUAL
  • 200,000 MILES
Replaced fuel lines, fuel filter, fuel pump. Still same thing rough idle and when pedal is pushed it shuts off instantly. Got a code 22 TPS and code 33 MAP. Replaced the throttle pressure sensor. Checked for error codes again. Still had code 33 MAP and now code 44 appears. Replaced map sensor and code 44 disappears. But then get code 33 showing again along with code 34. Car still runs bad like it is starving for gas, but when pedal is pushed it shuts off.
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Tuesday, February 20th, 2018 AT 9:12 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Hello,

It sounds like the engine has jumped time we can confirm the issue with a compression test. Here is a guide to help us find out whats wrong:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Thursday, February 22nd, 2018 AT 12:21 PM

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