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Car runs for 10 sec and then dies--troubleshoot please!!

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Old 08-05-2006, 04:05 PM
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Default Car runs for 10 sec and then dies--troubleshoot please!!

Not sure if this is the right area to post this in but oh well, here goes.

I just dropped a new 402 engine in my turbo charged 02 trans am. I've had it started many times and had it running at idle for at least a total of 30 minutes. I went to take it around the block and I got a 1/4 mile and in mid throttle the car just shut off. When I go to start it now, it starts, runs for 5-10 seconds and then just shuts off, even if I'm giving it gas. Anyone have any ideas of what the problem might be? If you need any more info about the mods ask and I'll tell you what you need to know. I'm desperate to get this thing on the street!!!! Thanks.
Old 08-05-2006, 04:23 PM
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Definately not the right section.

Most likely your turbo 402 problem is a tuning problem.
Old 08-05-2006, 04:25 PM
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Sounds like the VATS is kicking in for some reason. Is your security light flashing on the dash?
Old 08-06-2006, 12:46 AM
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Crankshaft Position Sensor
Old 08-06-2006, 06:38 PM
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Originally Posted by WS6Vixen
Not sure if this is the right area to post this in but oh well, here goes.

I just dropped a new 402 engine in my turbo charged 02 trans am. I've had it started many times and had it running at idle for at least a total of 30 minutes. I went to take it around the block and I got a 1/4 mile and in mid throttle the car just shut off. When I go to start it now, it starts, runs for 5-10 seconds and then just shuts off, even if I'm giving it gas. Anyone have any ideas of what the problem might be? If you need any more info about the mods ask and I'll tell you what you need to know. I'm desperate to get this thing on the street!!!! Thanks.
Definitely sounds like a tuning problem. Sounds like its running open loop for awhile, then when the PCM attempts to close the loop, the PCM doesn't like the data its getting and shuts down. Definitely find a good tuner...



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