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1992 GMC Sierra K1500 - Page 4 Questions & Answers
What is tps sensor
TPS is the Throttle Position Sensor, Usually located on the side of your throttle body (carburator) It works with your idle air control valve to regulate the air flow into the intake at idle
My truck started running poorly as the temp
You have a Cold starting sequence that is similar to a choke. This system relies on getting a temperature signal back to the Computer. It should have at least 1 water sensor. Sometimes there are 2 sensors with one working the dash gauge and the other working the Cold start sequence. If you find 2 sensors just unplug 1 at a time and do this when the engine temperature has been rising. When you find the dash gauge sensor you will lose the reading on the dash gauge when it is unplugged. The remaining sensor would control the Cold start sequence, so replace that sensor.
Whee is the fuse and relay for the trottle body
The relay is inside the engine computor. The fuse should be one of the ecm fuses in the fuse box under the dash. Check your wires on the throttle body that go to the injectors. Have seen air filters rub through the insulation and short them out, especially of the gasket for the air filter is missing or broken.
I have a 1992 gmc
did you replace the starter solenoid, it sounds like the linear motion is there in the starter, just no turn. check the solenoid
I have a 1992 gmc
Assuming you've got a clean and tight connection to the battery, there's a good possibility that the starter is bad. A bad starter will occasionally work when cold but once it heats up, it requires more power to get it to engage. If when it's hot, everything else is working, ie headlights bright, accessories like power windows work, then it would certainly sound like a starter problem. Most with these symptoms end up changing out batteries, alternators, only to find out that a few days later, the problem returns and you've already spent a few hundred dollars. If you like, you can take the truck to 1 of the auto parts chains that offers free electrical diagnostic tests. This would confirm your battery and alternator are fine prior to making any major repairs.
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