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

changed opti runs good then.....

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Old Nov 3, 2007 | 05:05 PM
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Default changed opti runs good then.....

all right guys i got a good one for you. I have a 97 z with shorty header(that was a bitch) and thats all the mods to engine. recently i replaced optispark car runs beautiful for about ten min then dies and wont turn over again for a couple of hours. when it dies it gives me a 1371 engine code(crankshaft pos sens) i have replaced plugs, plug wires, ignition module, and coil, and to many damn expensive cps sensors and still runs for a little and then dies what do i do, im about to just give this car away i love it but GOD DAMN its being a bitch.
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Old Nov 3, 2007 | 05:08 PM
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so you changed the crank sensor also and no luck?
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Old Nov 4, 2007 | 07:54 PM
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Its the ICM. It heats up and then the car dies and takes a few hours to cool off and it will start again. Change it and you'll be back on the road.
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Old Nov 6, 2007 | 09:29 AM
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Default yes changed crank sensor 4 or five times

yes we have changed the cps a couple of times


have you had problems like this before cause we didnt think it would be the icm because it runs but your exactly right it will run for a little bit then die when somthing gets hot and then a couple hours later it will run
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