Question about Chevrolet 3500

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I have 1990 chev 3500 4x4 with a 454. The problem is, It starts, runs for about 10 seconds and dies. I have to turn the key off before it will re- start and do the same thing. It ran fine with no problems. This came on all at once.

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Could be a number of things but I would first suspect fuel pressure with a symptom like that. Chack pressure fould be a pump issue or a restriction.

Posted on Oct 07, 2010

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My 1990 chevy lumina will start up for few seconds then die. it wont stay running for more than 5 seconds but will starts up every time. when i give it gas it dies immediately


Sounds like low fuel pressure. Check your fuel pressure. If you have the 3.1 liter engine and just turn the key to the "on" position you should have around 41 - 47 PSI. When running it should have about 31 - 44 PSI. If you have the 2.5 liter engine you should have 26 - 32 PSI of pressure when running. I hope this helps and good luck.

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On frist attemp to start car, cranks then dies after few seconds ckd fuel rail , had no pressure , replaced fuel pump regulator , no help !


do you hear the fuel pump turn on when you turn the key to the run position? If not the check the fuel pump relay.

If the car will start and run for a few seconds then die, It may well be the crank position sensor.

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Why would a 1990 Chev. Start hard and die shortly after starting in cooler weather? It should go into high idle immediately and run fine... It will crank over for 4 or 5 seconds, then fire and die shortly...


Sounds like the fuel supply through is inadequate. That is a Want-to-be fuel injection system that uses a relay to enrichen the gas mixture.

Solution could be a container of fuel system cleaner, and a spray or two of carb cleaner in the injector.

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When you tur the key forward do you hear the fuel pump running? You should hear a low hum for about 20 seconds near the gas tank and then it stops. If you hear this your pump is good. If it keeps running or you can't hear it at all it's bad or the main fuel pump fuse is blown.

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if it were me I would start with the idle air controll sensor, this is a real humdinger on fords. also clean out your throtle body really good.

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Ran fine then next day all went to /


that sounds correct and its probably electric and in the tank. turn the key to the start position then listen for a small humming noise coming from gas tank if theres no sound then thats most likely the problem.

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