Question about 1989 GMC Sierra

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89 GMC 5.7L. P/U When driving after a few miles the truck dies. Let it cool down and it starts back up till it warms up then it dies again.Sometimes i go 2 miles or 20 miles just depends.

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Check the primary and secondary resistance of your coil. Also check spark plug wire resistance. The coil will short out when it heats up if it is going bad.

Posted on Oct 05, 2010

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Windstar runs then dies then starts back up


At best, this would really be hard to find, since you can drive it hours before it happens. You could start by pulling all the fuses one at a time check them and put them back in. This gets rid of corrosion contact problems. You can also do the to all the plugs. Sounds like you have a heat up problem. Some thing in the electrical system is getting hot and loosing contact. Things that would kill the engine would be , the ignition switch, the map sensor, the mass air flow sensor, And the engine control module. Parts inside of these can heat up enough to loose contact. Your's is going to be a hard one to find. Until the part completely dies.

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Sounds like your ignition module it is common on fords to do this when its cool it will start and run fine but once it heats up the truck dies until you let it cool down again and then your up and running till it heats up again. Some modules are mounted on the fender others are mounted with the distributor have it checked and let me know how it went.

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YOU MAY HAVE A THERMSTAT IS THE STUCK PARTIALLY CLOSE
NOT ALLOWING FULL FLOW OF COOLANT THROUGHOUT ENGINE, TRY TO REPLACE THE THERMSTAT. WHAT ENGINE IS IT? 4.3L,5,7L ?

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Turns off after driving it for a few miles it will turn on again but once I put it in gear it will turn off again have to let it cool off till I could get it running again...


This could be a couple of different problems. You said it dies after it gets warm. Is this just like when you stop at a stop sign? And you say it starts back up but dies when you put it in gear? If you restart it and leave it in park it won't die??? Just dies if you put it in gear? I think it might be your torque converter clutch solenoid.

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Replace you fuel Injector pump and check for any bad or clogged injectors. make sure idle adjustment screw is properly set 1ak+f4pj7cbm32cuniyi2gaaaaaelftksuqmcc

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it may be in the distributor.i would look to see if it has a set of pick-up for the ignition?

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Did you change your fuel filter? What about the air filter? You nay also have a bad plug wire. It may need a tune up. I do my own.

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