Question about 1996 Chevrolet Astro

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Intermittent problem will not start /fuel pump system problem

When the van does not start the following is not happening: -no power at the pump. -no power to fuel pump relay from VCM. I have change the fuel pump 4 times in the last 3 years.

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  • tonemanhd Feb 04, 2009

    van is hard to start but once runnig runs good

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If you run it under a quater tank you will continue to replace them the fuel keeps them cool and lubricated i know it sounds weird but its true ive bought 2 in as many years at600 a pop keep it @ a 1/4 to 1/2 and you shouldnt have to replace it again after this time

Posted on Jan 22, 2009

  • kingmafasax6 Jan 22, 2009

    ps.also check your harness to the pump

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: Sounds like you have attacked the problem pretty well. Check the fuses. Do a "pin" check for power and ground to the ECM. When you replaced the ECM, did you use a new prom? If not, you could have a faulty prom. Check fuel pressure and using a Noid light check the pulse at the injectors. For your information, the injectors will have 12-volts and the computer momentarily grounds them to open the injector.
Your problems may be caused by a faulty ignition switch or starter solenoid.
Intermittent electrical problems are difficult to trace. We would suggest first checking the ignition switch and next the neutral safety switch
You are close to the right track but check the fuel pressure during the no start condition as you may have a faulty fuel pump. You also could have a vehicle speed sensor problem

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