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Ign on, pump runs to charge fuel rail. starts easily. dies after rail depletes

(1990 Jeep Comanche)
in Soldotna, AK on November 05, 2014
New pump, no power to pump after initial prime. no electric to pump after it starts. What/where is ?trigger? to power the fuel pump after the engine starts.
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Popular Answer
on November 05, 2014
Fuel Pump Relay
$ 14.49 /ea
Part Number: AR272SB
Product Line: NAPA Mileage Plus Electrical
There is also an EFI/Fuel injection relay!!!!!... www.alldatadiy.com ... or a good repair shop!!!
on November 05, 2014
Most jeeps usrd a auto shutdown relay that control power to the pump. Had this is on a 90s wrangler i final figurd it eas the computer that was bad. U shoyld try looking up a wiring digram fot the fuel system to see what is all the circuit
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Jeep is actually an 89, starts just fine, runs till the fuel rail is empty then dies. but then starts right back up. ...
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