Mechanics

RANDOM NO START NO SPARK

1990 GMC S15 • 105,000 miles

This is my grandfathers truck that I have been driving. When I borrowed it from him he told me of the only known issue, that issue is that randomly it will not start. I recently went to go get lunch, pulled into the parking lot and shut the truck off. It didnt start after that. Last time it did it to my grandfather it shut off, he called a tow truck and had it towed. When it was on the back of the tow truck the driver tried to start it and it started right up like nothing had happened. I replaced the distributor last night to see if that did anything. I have power from a pink wire from the harness to the external coil, but nothing with the key on from the dis. There is no spark from the coil or end of wire. If you could point me in the right direction I would appreciate it.
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S1nner.sf
January 17, 2012.




Next time it happens check for fuel and spark immediately-

Tiny
Rasmataz
Jan 17, 2012.
I did immediately after I tried it a few times. Pump runs during crank but no spark. It is a 90 with a 2.2 I know they have some known issues with no starts.
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Tiny
S1nner.sf
Jan 17, 2012.
Could be the distributor pick-up coil, ICM and coil itself

Tiny
Rasmataz
Jan 17, 2012.
Brand new distributor put in as of last night. How about wiring issues. Fuse able links? Any thing wiring that you would know of to cause a crank but no spark

Tiny
S1nner.sf
Jan 17, 2012.
Check for power to the coil and also check coil primary and secondary winding resistances

Tiny
Rasmataz
Jan 18, 2012.

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