Question about 1995 Chevrolet K2500

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1995 6.5 turbo diesel, will not start, batteries good, engine turns over fine. I was driving about 25mph and it shut off. I carry a spare PMD and fuel shutoff solenoid with me so I changed them while I was waiting on the rollback. Did not fix the problem. When the rollback dropped it off at the house it started and ran for about 10 seconds, no start sense. PMD has been relocated outside the engine compartment for many years now. I also put an OPS saver relay on the pickup fuel pump at the same time years ago. The pump is working fine with fuel delivery to the injector pump. The fuel shutoff solenoid is working correctly. I have no fuel at injectors. I have also changed the crankshaft sensor, and the ECU, with no success. I have checked all the ground wires I could fine, the only ones I could fine were on the passenger side at the rear of the engine. Injector pump was upgraded (green tag) 100,000 miles ago. I have no codes, just code12. Need help; Randy

Posted by Gloria Freeman... on

  • Gloria Freeman Clayton Jul 22, 2012

    Thanks for the help, update, I have not removed the injector yet , that will be next if you still think I need too. Injector has two wires one red one black. Put a volt meter on them with them connected, no power, ignition on or in start. I disconnected both wires still no power to wires using volt meter on red and black wires. I then put the volt meter from red to ground, no power ignition on or in start. Then the black wire, it had power 12volts with ignition on and start. What next? Thanks Randy

  • Gloria Freeman Clayton Jul 23, 2012

    Problem solved broken wire from PMD to injector. Insulation was good but wire was broken inside, thanks for all the help.

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3 Related Answers

pippall

Philip Long

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SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

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tripletauto

TripleTauto

  • 1450 Answers

SOURCE: 1988 Chevy S10 2.5

chack and see if your security light is staying on if so then security is shutting down fire to injectors.
are you gettting spark? pcm needs to see a signal from cam sensor to fire injectors. also when you first cut key on you should see the injectors give an initial shot of fuel

Posted on Sep 29, 2008

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drallim

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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

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Pmd


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