89 chevy 3/4 ton. 2wd. 454. AT. truck runs good for a few minuites and then suddenly dies. then I turn the key off and do a restart. runs for sometimes a few minuites and sometimes a few seconds then dies. ive replaced the ignition module in the dist. cap. ?? any suggestions on where to go from here? oil press sending unit? fuel pressure? ecm? fuel pump? coil?
SOURCE: 85 vette starts but will not stay running
there is a sensor on the throttle body it' controls the idel of the vehicle it's called a tps and has a electrical lead to it this should be replaced it will be positioned right behind the butterflyplate of the throttle body
SOURCE: 1987 chevy s10 will not run. changed weak fuel
The problem is fuel related. Disconnect the fuel line to see if fuel is reaching the carb.
SOURCE: 1987 chevy s10 2.5l tbi will not start. changed
That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.
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