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Old 12-26-2010, 08:44 PM
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Sadie

Car cranks easy when cold, drive for a short while, turn car off and try to recrank it and car turns over slowly and won't crank until it cools,I changed the battery, starter,coil,wires,plugs.What could it be I even put a high torch mini starter that can crank 18-1 compression engines but no winner.Should I try the module or better coil(more voltage) it's a chevy 350/w HEI stock ignition

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Old 12-27-2010, 01:18 PM
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Check for timing advance control not returning to initial setting. Advance weights sticking or vacuum advance sticking.
Try cranking the engine with the ignition coil or distributor disconnected to see if it cranks normally. If it does, check the above items.

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Old 12-30-2010, 08:12 PM
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Does the engine have headers? Since it cranks fine when cold and you have trouble when the engine is warm, I would assume the starter solenoid is heating up too much with the exhaust (headers???). Very common problem on GMs. I may be jumping the gun on this answer, but you may try a solenoid heat shield or moving the solenoid into the engine compartment like the Fords. There is a kit you can buy to do this. Several posts on here regarding this as well.
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