C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

shuts off when driving

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Old Apr 3, 2011 | 11:03 PM
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Default shuts off when driving

Have a 1986 c4 that shuts off when driving replaced fuel pump relay and fuel pump. No codes when it shuts off it will restart after 20min need help.
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Old Apr 4, 2011 | 12:45 PM
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When it dies, will it crank but not start, or no crank at all until its cooled for 20mins?
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Old Apr 4, 2011 | 06:15 PM
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My 85 did that,,, Replace the HEI module
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Old Apr 4, 2011 | 06:19 PM
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Originally Posted by LD85
My 85 did that,,, Replace the HEI module
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Old Apr 4, 2011 | 07:11 PM
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and be sure to grease up the new one with silicone ign grease. Even though inside the distributer, more is better. The module gets hot and shuts down. The silicone grease helps transfer the heat.
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Old Apr 4, 2011 | 11:39 PM
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When the module gets old, what you experienced is moderately common.
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Old Apr 5, 2011 | 06:25 PM
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Originally Posted by Sandpiper59
When it dies, will it crank but not start, or no crank at all until its cooled for 20mins?
yes that's it what is it H E L P
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Old Apr 5, 2011 | 06:27 PM
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Originally Posted by zoo950
yes that's it what is it H E L P
Dude, I offered 2 choices, you answered yep!
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Old Apr 5, 2011 | 06:44 PM
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Make sure you use heat transfer grease not regular silicon grease. Big difference. It was once available at Radio Shack but not sure anymore.
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Old Apr 5, 2011 | 06:59 PM
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Originally Posted by zoo950
yes that's it what is it H E L P
Did you replace the HEI module?
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