Question about 1991 Chevrolet Camaro

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My car wont run for more then 30 sec.

I have no codes on the computer i have checked the fuel pressure, and the spark for the car and both are what they should be. some days it will run for 45 min with out any problems some not even 30 sec.

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To me it sound like an anti theft problem. if your checking it with a generic scan tool chances are your not reading the theft deterent module. check to see if your getting injector pulse with out that your car will not start. you can check this with a noid light

Posted on Sep 30, 2009

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2003 saturn L300 starts and runs for about 5 min then dies. wont start again untill it sets for 30 min. then it will run another 5min. and shut off


When it shuts off it is time to check things out. Check fuel pressure on the fuel rail and check for spark at the plugs. If no spark the coils may be bad. As the engine heats up the inside of the coil pack may be seperating or grounding themself out. If fuel pressure is low the fuel pump may be weak and on its way out. This happens to people that run there car untill the fuel light comes on.it is ******* the fuel pump because the fuel it's pumping is what cools it. You can search on google or youtube for what your particular cars fuel pressure should be.

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Lets find out
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I have a 1999 gmc sonoma it cut off the other day


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sounds like you have a fuel pump problem check the pressure with a gauge to specs.if its low then you will have to replace the pump.replace the fuel filter as well.check for powers and grounds at the fuel injectors and for codes in the computer,it could be a bad injector circuit in the computer.

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I understand you replaced the relay but not the pump, right ?
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The computer is shutting of your fuel because no spark it is a safety feature if the fuel continues with no spark you exhaust converter could fill up with fuel the results not good.So that is why your ECM your cars computer is confederated that way.

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Hot or cold it runs for 30-60 secs then cuts out.replaced coil pack but it takes accelerator to start,now wont start at all could this be fuel filter?


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I have a 95 Maxima I changed the fuel injectors and now the car wont start.  so i put the old injectors back and it still wont turn over,  It stay on for about 2 sec can anyone help me


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If it doesn't start now, you may have done something while you were changing the injector. good luck

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