Question about 1994 Chevrolet Cavalier

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Car will run great cold but when you turn it off it will not start till it cools back down check coils,fuel reg,replaced most sencors,at a lost please help

When i do get it to start it will missfire but i can turn key off and back on and it will run great

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  • Chevrolet Master
  • 2,007 Answers

If you don't have an engine light on, the first thing I would check is the air filter. Then check the engine ground cable, and all connections in the ignition system. If those are good, it could be the IAC valve, or an O2 sensor, but usually you would have an engine light with those. Try swapping the coil pack with another one. I would suggest an auto wrecker to get one to try.

Posted on Jan 14, 2013

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Posted on Jan 02, 2017

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  • 239 Answers

SOURCE: PROBLEM STARTING CAR AFTER RUNNING IT ON SHORT TRIP

SO YOU SAY YOU DON'T HEAR THE FUEL PUMP WHEN IT IS HOT, I WOULD LIKE TO KNOW IF THERE IS SPARK WHEN IT WON'T START. BECAUSE IT MAY BE THE ECM UNDER THE COIL PACK SOMETIMES THEY ACT JUST LIKE AND OLD COIL THAT GETS WARM AND WON'T START WHEN IS GETS HOT. I WOULD MAKE SURE IT NOT GETTING SPARK BEFORE CHANGING THE ENGINE CONTROL MODULE BUT IT SURE SOUNDS LIKE THAT TO ME. I SURE HOPE THAT HELP YOU OUT AND IF IT DON'T LET ME KNOW HERE AND WE CAN DO SOMEMORE TROUBLE SHOOTING, OK THANKS BEAR001

Posted on Jun 17, 2008

johnjohn2
  • 5763 Answers

SOURCE: 05 Impala missfire code 301 have changed

check intake for vaccum leaks,the gasket also and egr valve, thats alot of parts to have replaced without diagnosing first, if there are no fuel leaks and you said all injectors were replaced then you have a defective fuel pump, also these engines had misfire problem because of dirty injector but you replaced them so count that out. good luck.

Posted on Nov 02, 2009

caroldon
  • 17130 Answers

SOURCE: 92 chevy s10 blaser 4x4 4.3 v6 starts but after it warms up it wont restart till it cools down

It is possible that the fuel pressure is low specially after the engine heats up and so it refuses to start. Rather than changing spares with a suspicion you must confirm the case before the part is replaced.So I think that the fuel pump must be checked, check the compression, timing and valve settings.

Posted on Dec 15, 2011

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