Question about 1990 Chevrolet K1500

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Bad oil switch/ fuel shutoff switch

Truck ran fine and one day i turned a corner and the truck died. there was no humming from fuel pump when i checked it. i then replaced fuel pump, fuel filter, ecm, but the fuel pump works when hot wired. i got an oil switch i still have to put it on, but i heard it is also a fuel shutoff switch. any info is great. also it runs if you use starting fluid but when that burns off it shuts down.

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  • Chevrolet Master
  • 21,873 Answers

Only Ford products have a fuel switch called an inertia switch.
GM products use a fuel pump relay and the oil pressure switch to provide power to the pump.

Posted on Apr 30, 2013

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6ya6ya
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Posted on Jan 02, 2017

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Brian032472
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SOURCE: new fuel pump had to be hot wired thruogh a toggle switch, stock connections not working.

Check the fuel pump relay

Posted on Nov 03, 2008

  • 1 Answer

SOURCE: 2000 chevy silverado 1500 4.3 eng

Chevy Trucks, Blazers, S10 pickup and the like will vapor lock ecspecially the 2000 models. Do not tighten the gas cap past 1 click. There is a tube that runs from the top of the tank down and this gets hot and collapses or burns in half. We just bought a reinforced rubber tube cut it to lengh and use it instead of part and it's worked grat for 2 years so far.

Posted on Feb 01, 2009

  • 3 Answers

SOURCE: new fuel pump replaced on 2000 chevy s-10 blazer, no fuel

BAD FUEL PUMP


Posted on Apr 19, 2009

  • 4088 Answers

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

  • 5 Answers

SOURCE: 1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi

Check the trottle body postioning sensor...

Posted on Jul 19, 2009

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