Question about 1988 GMC S-15

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89 GMC S15 V6 going down the road and motor dies

Can start up truck in the mornings and will run fine for about 20 minutes then die while going down the street. I can let it sit for a few minutes and it will start up and run for about a minute and die again.
I have replaced the coil and the fuel pump but the problem is still there.
I pulled the distributor wire and checked to see if it was firing while turning over, sometimes it will fire and sometimes it will not.

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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.

Posted on Nov 18, 2008

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