92 gmc

Asked by Sam9519 Mar 25, 2019 at 03:06 PM about the 1992 GMC Sierra 2500 2 Dr K2500 4WD Extended Cab SB

Question type: Maintenance & Repair

The pickup wont stay running it will start then lose
spark after about 30 seconds to a minute I've
replaced the whole fuel system and ignition
system except the ecm what could cause this?

6 Answers

26,640

If spark is the only problem, did you check primary voltage to ignition coil, after it stalls? Pink wire is hot with key in the on position. If it isn't hot, have to check ignition switch and feed to and from ignition switch. Just a thought.

1 people found this helpful.
26,640

Battery has a full charge and connections all good?

1 people found this helpful.

I'll get to the shop and check the voltage to the coil and yes the battery is fully charged

Well it's getting power to the coil from the ignition switch when it dies but now it will just fire right back up

26,640

Intermittent problems are a pain to track. I'd have to check when problem ongoing. I thought about ignition switch, but, I'd hate to see you replace that and still have the same problem? Any applicable trouble codes?

No its not throwing any codes when it dies I wound up talking to a few other people too and they are all thinking the same thing

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