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09-18-2021, 08:33 PM | #1 |
Registered User
Join Date: Mar 2007
Location: Waxahachie, TX
Posts: 195
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Problems running at operating temperature
1988 C1500, 350 with auto trans. I owned this truck for several years and it never failed. I don't know where to now go with it. One morning last month, I drove it to work and 4 miles from home I was at a red light. Light turned green and the moment I touched the gas pedal to go, it died. No matter how much I tried to start it, it would not start. I had to get a tow home. Next day I started it and it ran perfect. I just let it run inn the driveway. Ran perfect for about 10 minutes, then the idle speed kicked up quite a bit. I don't have a tachometer, so I don't know how much. It ran like that for 5 minutes before I got in and touched the gas pedal. Instantly died again and would not restart.
What I have done so far... It has good spark after it dies. The spray cone from the injectors appear good. I replaced the ignition module and ignition coil. Still having the same problem. Runs perfect cold, but once it gets warm, it won't run at all. I tried finding diagnostic info online, but can't find anything that matches my situation. Any ideas?
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1988 C1500 Regular Cab, Long Bed, 2WD. |
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