LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Help - engine runs bad when warm

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Old 02-19-2013, 10:16 PM
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Help - engine runs bad when warm

Ok i have a 1994 camaro z28 with the LT1 and i can start it let it warm up and once it hits about 170 degrees it starts sputtering and if i give it gas it dies. After it dies i can try and start it but all it does is crank. I know its getting fuel and i just replaced the ICM because it tested bad. If i let it cool down it will start up fine and run great until it warms up again and does the same thing. Im on a limited budget and dont want to just start replacing parts PLEASE HELP!!!!!!
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Old 02-20-2013, 05:02 PM
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Re: Help

Your getting fuel ... but what does your fuel pressure look like ??? is the pressure dropping when
your car starts to sputter ?????
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Old 02-21-2013, 12:43 AM
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Test the opti


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Old 02-21-2013, 02:11 AM
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Re: Help - engine runs bad when warm

What type of icm did u replace the other with.

Did u put some heat grease on the back?


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Old 02-21-2013, 05:21 AM
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Re: Help - engine runs bad when warm

Heat soak can also affect the optical cam position sensor in the Opti (sets a code - scan it) or the fuel pump. Measure the fuel pressure. "Getting fuel" doesn't help if it's not at the right pressure.
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