WONT STAY RUNNING

  • Tiny
  • curtis4104
  • 1989 Chevrolet Cavalier
  • 105,000 miles

89 z24 2.8 car wont start unless I hold gas to the floor. Then wont stay running if I let off the gas. Has new iac tps and map sensor. Also the tcc has been unplugged. Any ideas?

Tuesday, November 15th, 2011 AT 3:25 AM

13 Answers

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,310 posts

Any major vacuum leaks? Possible intake? Have you checked fuel pump pressure?

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Tuesday, November 15th, 2011 AT 3:28 AM
  • Tiny
  • curtis4104
  • Member

No vacuum leak and fuel pressure is good

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Tuesday, November 15th, 2011 AT 3:40 AM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,310 posts

Did this happen all at once?

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Tuesday, November 15th, 2011 AT 3:43 AM
  • Tiny
  • curtis4104
  • Member

Yes all at once got it to run for ten mins or so earlier but as soon as I give it gas now it stalls

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Tuesday, November 15th, 2011 AT 4:24 AM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,310 posts

I really feel it has to do with an intake leak. Double check to make sure there are no trouble codes stored in the computer.

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Tuesday, November 15th, 2011 AT 5:39 AM
  • Tiny
  • curtis4104
  • Member

I keep getting code 43

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Tuesday, November 15th, 2011 AT 1:28 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,310 posts

That is a knock sensor error. THe knock sensor can play with the ignition timing. Have you checked it?

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Tuesday, November 15th, 2011 AT 6:07 PM
  • Tiny
  • curtis4104
  • Member

Going to replace it will that cause my problem?

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Tuesday, November 15th, 2011 AT 7:16 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,310 posts

It could be an issue.

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Tuesday, November 15th, 2011 AT 9:57 PM
  • Tiny
  • curtis4104
  • Member

Replaced knock sensor still have to hold gas to floor to start stays running till I hit the gas then stalls.

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Tuesday, November 15th, 2011 AT 10:18 PM

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