Question about 1989 Chevrolet C2500

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1989 C2500 Silverado Chevy P/U starts intermittently, when it feels like it, purrs like a kitten when running, then quits after 5-10 minutes. Never know when it's going to start again. Have replaced

Is it possibly the Oil Pressure Sending Unit? Or the Throttle Body Position Sensor? Almost clueless now. HELP!!

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  • Backyard_Jim Nov 24, 2013

    Hello Rigoberto, Thanks for your suggestion. Ultimately, I determined it was an intermittent internal connection in the pickup coil inside the distributor. Once replaced, the engine starts every time, even though it's a little rough now. I liked the kitten purr. I was told the pick up coil may not be right even though it measure 790 Ohms when tested before and after installation. Any suggestions to get rid of the rough run would be appreciated. Thanks to all for the support and responses.

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Have you ever replaced the fuel filter?

Posted on Nov 18, 2013

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Posted on Jan 02, 2017

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SOURCE: 1999 chevy blazer wont start

THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Posted on Apr 11, 2009

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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.

Posted on Jul 17, 2009

castles_126
  • 5 Answers

SOURCE: 2000 Chevy Silverado 4.3 will not start.

I agree, disconnect the battery, and try resetting the CPU. Also if it got wet then there could be some random wire shorting out. Your CPU is located just above the wheel hub closest to your battery inside the engine cmptmnt.

Posted on Jun 21, 2013

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