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No power at pump or the crash switch. relay seems to be good

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What year is this? Is your anti theft light on? Is there power to relay and all connections. Where does it start and stop?

Posted on Sep 09, 2009


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Don't bypass the fuel pump relay . power to the relay comes from the ignition switch on start cycle .when the engine is running the oil pressure switch takes over the circuit .so if you crash and the engine .stops so does the pump . If the fuel line brakes a bypassed pump will keep pumping spraying fuel and you could burn.

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Please be advised the fuel pump only is powered while the engine is being cranked or has started. Are you still sure the pump has no power? The relay and fuel pump cutoff crash switch or under the hood near the battery in a black box.

Sep 04, 2012 | 1993 Dodge Dakota

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No power to fuel pump on a 1993 ford probe. all fuses are god,fuel pump relay is good and fuel cut of switch is good as well but still no power to pump?

If you actually have no power to the pump and all the fuses and relays are good check the wires for a short and if that is good replace the ignition switch. If you think the condition is no power to the pump because it doesn't seem to power up remove the pump and apply direct power to it to see if the pump is the problem.

Oct 10, 2011 | 1990 Ford F150

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92 F-350, 460 auto, two tanks/pumps. I have no current to either pump. Fuses and relays are good. A hot wire to pump turns pump on. Not seeing a switching valve, just the dash selector switch. Bypassing...

if the fuses and relays are good then have you check the dash switch,you may have to check the wiring(powers)from the pump back through the system until you find were you have lost power.

Jun 16, 2011 | 1992 Ford F350

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No power at fuel pump or crash switch

OK, you may have a dedicated pump for each tank, if so; DOES THE OTHER TANK WORK? If so, you have a problem with the switching system or second tank pump. You may have been testing the electrical, but remember: even a pump that works does not pump gas of there is a broken rubber feeder hose inside the tank. I would consider dropping the tank taht does not work and checking the pump and filter inside. Make sure key is on and test (usually the gray wire). Good luck.

Sep 10, 2009 | 1988 Ford F 150

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Car statred to sputter and then died. Car will turn over but will not start. Could it be the fuel filter

Could be - however -

You need to determine if your not getting fuel - or no spark & take it from there..

Jul 12, 2009 | 1998 Ford Taurus

1 Answer


you dont say if no power whilst cranking or static ?sounds like a poss fuel pump relay fault if you say u have no power to injectors, what did you check power with ? a test lamp or multi meter ?the ecu switches the earth off & 0n to achieve switching, but if now power would suggest fuel pump relay fault, but a tachomatic relay (receives signal from coil to kick in relay) if basic fuel pump relay it may have a crash sensor that has tripped and needs resetting. ford had them in the boot , rovers had them up dash by radio , jags had them centre console fiats pass footwell.
silly qustion, is the vehicle safe guarded by a chipped key system? if so has the key been damaged /fell apart ? you may have lost electronic chip! this on most cars will allow cranking with no power to pump or ignition system. good luck

Aug 02, 2008 | 1997 Jeep Cherokee Country

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