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Pontiac Forum: No fuel on rail 1991 sunird
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  #1  
Old August 6th, 2017, 01:52 PM
corvette57 corvette57 is offline
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No fuel on rail 1991 sunird

Not getting any fuel to fuel rail. New pump 2 months ago, new filter and relay today. I put 12 volts to the FP test link and no pump. Power to FP relay. Any suggestions?
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Old August 7th, 2017, 06:52 PM
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melsg5 melsg5 is offline
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if you are saying your pump doesnt run when you directly apply power to the pump the pump has failed and it doesnt matter that it is only 2 months old.
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Old August 8th, 2017, 06:16 AM
corvette57 corvette57 is offline
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I was thinking it was pump failure too. Its an autozone fuel pump.
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Old August 8th, 2017, 04:59 PM
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Fuel pump doesn't run all the time, only way to check is with a pressure gauge that connects to between the tank and the filter on Jbodies . You should also hear the fuel rail primer when the key is turned on. ( separate solenoid ) Turbo MPFI only - not TBI !


91's are famous for fuel pump corroded wires from the fuse block back to the pump. Should be a grey wire that runs with other wires along the drivers side carpet and seat. ( no need to pull the sill plate.)

Doug in P.R.
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Old August 8th, 2017, 08:18 PM
corvette57 corvette57 is offline
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This is my daughters car. The gas gauge said it had a half tank. I dropped the tank and it was bone dry. So I guess my issue is the gas gauge. I am going to warrentee the pump since the tank is out. The FP may have run hot running with no gas in it. Thank you for your help.
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Old August 9th, 2017, 11:11 AM
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Glad to hear you should have it resolved. Always hard to T/S one issue when you don't know about another problem!
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Old August 12th, 2017, 08:48 AM
corvette57 corvette57 is offline
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I put a new sending unit in the tank. put a new pump in too. Put gas in it and it fired right up. And the gas gauge works now too.
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Old August 12th, 2017, 10:51 AM
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excellent, the dry tank probably killed the pump
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