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2001 chevy express 2500 . changed fuel pump ,pump runs but there is no enjection pulse truck will not start. truck starts with starter fluid . but with fuel pump. HELP , could it be the ECM mod.

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Have someone open the gas tank door and listen for a zooming sound as you turn the key to the on position (NOT CRANKING POSITION), If no sound, check the fuel pump fuse relays in the fuse box in the vehicle and under the hood. Also check the connections at the gas tank and the ground strap at the gas tank.

Posted on Oct 27, 2017

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Posted on Jan 02, 2017

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Kris Suit

  • 85 Answers

SOURCE: truck wont start keeps blowing the ecm batt fuse

You have a short (bear wire) somewhere. Trace the wire and find it.
Have a great evening

Posted on May 01, 2009

csmock132

Clint Smock

  • 4669 Answers

SOURCE: 1995 buick riviera sc won't start changed fuel pump ,

Have you checked for injection pulse or compression. Will it start if you spray carb cleaner in the intake?

Posted on May 05, 2009

Anonymous

  • 1 Answer

SOURCE: 1997 Chevy Blazer wont start without starter fluid

Check fuel pressure it could be low regulator pressure

Posted on Jun 28, 2009

drallim

  • 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

Anonymous

  • 118 Answers

SOURCE: 2000 chevy express 5.0 2500 series starts,runs and

Try swapping out the fuel pump relay, if thats good try testing your ignition system components. Start with the module and coil pack. If they are ok check the crank position or cam position sensor (which ever applies).

Posted on Apr 23, 2010

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I would check n replace the fuel filter if needed. Also, it could be one of the spark plugs. Was it running before? Can you think of anything that happened or changed recently?

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/laura_08254539050d64db

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