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1997 Chevrolet cavalier stalls when not depressing the gas pedal. Changed the TPS, catalytic converter and throttle control motor. I can physically hold open the air intake flap and it stays running. It's like the "flap" on the air intake won't open enough to keep it running. I've noticed that when cranking the car that the "throttle body flap".... Sorry don't know what it's called.... But it doesn't open at all to allow air in. This happens about 70% of the time. Other times it runs fine. Also seems to do it more after its been drove a while. also has a new fuel pump and fuel filter. 150,000 miles on the engine. Any ideas? I've sprayed throttle body cleaner in it as well.....

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  • 17 Answers

It could be the idle air valve or idle control valve

Posted on Dec 10, 2012

  • brandonpolla Dec 12, 2012

    Already changed that as well. Still does the same thing

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 321 Answers

SOURCE: buick lesabre nightmare

Need to get a scan tool and look at the data stream while it is running for alot more info.Also any trouble codes.Sounds like initially,the engine isn't getting any fuel.I would have a pressure gauge connected to the fuel rail on the engine,so i could monitor the fuel pressure while all this is going on.Items to look at on the data stream would be timing,what timing is the PCM commanding for the engine.Also,have you checked for continuos power feed to the coils during this no start condition,and fire at the plugs while cranking.You could possibly still have spark,but maybe it is extremely weak?I have seen bad ignition switches cause weird problems before too.Many things power up through the ignition switch,just a thought.Have also seen bad PCM's cause strange problems..38 volts is a little on the low side for GM.Usually see those at,at least .50 and up,and rise steadily while pressing the throttle,up to just under 5.0 volts.Potentiometer with 5 volt supply.Vacuum leak can be checked with engine running at a steady idle speed,spray brake cleaner all around the intake manifold and listen for engine speed change.

Posted on Jul 31, 2008

  • 255 Answers

SOURCE: buick lesabre no start

Hi you have replaced allmost everything ,(try fuel pump relay)

Posted on Aug 18, 2008

  • 1 Answer

SOURCE: 2003 cadillac cts

That's what was finally found by our Cadillac dealer as well. They charged us too much, though.

Posted on Feb 09, 2009

  • 1 Answer

SOURCE: 1992 Chrysler LeBaron 3.0 L.

the owner probably rerouted the fuel line because like my 92 chrysler lebaron v6 3.0 the fuel lines keep seeming to come off and the clamps always break. I have replaced the clamps 5 times in a month and replaced filters 2 times in 2 months. The only thing i could think of is that your fuel is being cut off possibly because there is no filter to clean all the junk out. Try putting a fuel filter on and see if that will work

Posted on Feb 09, 2009

  • 17 Answers

SOURCE: Won't start after installing new fuel pump. After

HAVE YOU TRIED CHECKING THE FUEL PUMP RELAY

Posted on Aug 31, 2009

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