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1995 chevy caprice with 5.7 lt1

Old September 5th, 2009, 3:41 PM
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Default 1995 chevy caprice with 5.7 lt1

Does anyone know for sure if the distributor on the 95 chevy caprice with the 5.7 eng would cause the car to shut off without warning?
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Old September 6th, 2009, 5:14 PM
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Hi bbish0p,

Welcome to the Chevy forums.

The ICM module has a dielectric grease on the bottom. When this dries out, the ICM goes wonky. This causes the ignition to cut out sporadically. Be sure you get an ICM that has a packet of dielectric grease included.(@20$ at any parts store) Replace the ICM. Grease the bottom metal plate well. Check that the rotor and cap are in good condition, with no cracks or carbon tracking.

Peace be with you. Enjoy the rest of the weekend. Best of luck.

Last edited by therewolf; September 6th, 2009 at 5:20 PM.
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Old September 6th, 2009, 7:59 PM
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thanks for the advice. I've already changed the icm but don't think i used any grease when replacing it. If the opti spark was going bad would it have the same effect as listed above?
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Old September 7th, 2009, 9:13 AM
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Google "opti-spark" there's a world of answers on the internet.(albeit just a series of tubes...)

What's your mileage like, and how's your waterpump? Opti-spark seems prone to waterpump leakage by design. This inherent defect, in combo with high mileage might be the excuse you're looking for to upgrade your drivetrain to a more dependable overall design.
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Old September 7th, 2009, 12:47 PM
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If you did not put grease on the ICM when you installed it then you need to take it back apart and put it on. No grease on it can cause an array of performance issues.
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Old September 7th, 2009, 6:37 PM
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thanks mdtahoe and rivereye, i will do that first. Do either of u know of a good mechanic shop in md?
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Old September 7th, 2009, 8:54 PM
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I do but I am not sure if I am allowed to post it so I sent you a PM.
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Old November 7th, 2015, 7:42 PM
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Default good mechanic in md

Originally Posted by bbish0p View Post
Does anyone know for sure if the distributor on the 95 chevy caprice with the 5.7 eng would cause the car to shut off without warning?
Did you ever find a good lt1 mechanic? I'm looking for one myself
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