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S15

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Question
20 amp ignition fuse continues to blow
Hello. All of this depends on what was spliced into that circuit when the engine was swapped out. I usually isolate this problem by disconnecting the circuits in it until it no longer blows. This fuse usually has a problem...
Question
I'm having problems with flooding
The fuel system flooding can only mean two things: The fuel injectors may be leaking or held open. The fuel pressure regulator on the throttle body is leaking fuel which will flood the engine out. Try to look...
Question
Trouble starting and acceleration bogs down
Hello there, thank you for asking about your 1986 GMC S15. You don't say whether you have an automatic or manual transmission, so I'm not sure how to help you with your shifting concern. As far as the engine performance...
Question
We changed the temperature sensor because we broke it and now the check gauges light won't quit flashing, and the temperature gauge jumps to high
Assuming that your vehicle is not actually overheating, this leads me to believe that the replacement temperature sensor is faulty or incorrectly installed. It could also be a poor electrical connection at the temperature sensor. An open circuit would cause...
Question
tbi injectors
If there is power to the injectors, and they make an audible clicking noise (that is, mechanically the injectors are functioning) measure the fuel system pressure and be sure that the pressure is within Factory Service Manual specifications. If pressure...
Question
How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Hi there - virtually all automotive and light truck electrical systems run on 12 volt components these days. Your fuel pump will be 12 volts as well. Perhaps the question you are asking is how many amps the fuel pump...

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