LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Car Starts, but then stalls STRANGE

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Old 07-23-2008, 03:02 PM
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Default Car Starts, but then stalls STRANGE

when driving my car and it gets warmed up to temp, it will randomely just stall out right away, it starts back up , but then stalls 1 second after, this is only when the engine is warm/hot. Idk what the problem is but i been messin with this car for to long and cant get it to run right. Any advice would help
Old 07-23-2008, 05:37 PM
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Had the same problem at the end of last season.....Ended up being the high res signal on the optispark going.... It took awhile, but code 36 eventually tripped. Apparently it will run for a little while (until hot usually) even with a weak/no high res signal.
Old 07-23-2008, 07:38 PM
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I would start at the distributor. The hi and lo resolution signals need to be scoped and the engine ran untill it stalls to see if you lose either signal or if the signal drops strength.
Old 07-23-2008, 07:50 PM
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try changing the coil pack...
Old 07-23-2008, 09:11 PM
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i got a brand new msd coil on it , i heard sumthing about the icm(ignition control module being able to **** when it gets hot?) also how can i check the opti for the hi/low, is it the wires that are on the opti connector?
Old 07-23-2008, 09:39 PM
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Sounds like the coil module.
Old 07-23-2008, 11:15 PM
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Sounds like the ICM..
Old 07-23-2008, 11:16 PM
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To check the wires for the hi and lo signals coming out of the dist. you'll need an oscilliscope to do so and a wiring diagram. It's best to have a shop to do so.
Old 07-23-2008, 11:55 PM
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Originally Posted by Untouchable9262
when driving my car and it gets warmed up to temp, it will randomely just stall out right away, it starts back up , but then stalls 1 second after, this is only when the engine is warm/hot. Idk what the problem is but i been messin with this car for to long and cant get it to run right. Any advice would help
Good fuel pressure? Could be pump going out. Mine went out when it was hot/warm it would start and stall.
Old 07-24-2008, 12:01 AM
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i checked my fuel pressure at idle which is 45 which is where it should be, i might check it while driving tho, because ive heard sum ppl that it has gone bad when the motor is warmed up and stalls, im gonna change my icm and mess with my iac tomorrow tho , hopefully sumthing good happens.



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