Question about 1999 Mercury Grand Marquis
Posted by Anonymous on
The fuel pump relay is in the powerbox on the drivers side of the car. It can be in a relay trio which is hung behind the powerbox and has a slide out access to the relays inside or it can be inside the big powerbox. Usually the cover has the relay name and position embedded in the plastic.
Posted on May 04, 2015
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Posted on Jan 02, 2017
The fuel pump is in the fuel tank.Sit in the car.....turn on the ignition switch to run.....listen very closely to the rear of the car...or have someone kneel down by the back wheel.....you should hear a "prime cycle"......the pump running for 2 or 3 seconds if the key was off for 15 seconds before trying this.If you hear silence you most likely need a fuel pump.Before pulling the tank down....check for power on the gray wire at the fuel tank connector just ahead of the rear axle under the car.Check for power with a test light that will last for 2 to 3 seconds as you turn on the key to run.Power means you really most likely need a pump.No power means you may need a fuse or a fuel pump relay.
Posted on Aug 11, 2009
SOURCE: 2000 Jeep Grand cherokee Laredo
sounds alot the the pcm it controls the fuel pump and ign system but the anti theft would keep it from starting because the key has a transponder in it programmed for that vehicle and that would kill all ign if triggered
Posted on Sep 27, 2009
SOURCE: I went out to warm
First unhook the battery for about a half hour to reset the computer.
does that have anti-theft on it.
a remote starter ?
second either swap the relays for the starter and fuel pump or replace them outright.
when you bypass the relay to get it to crank... will it start ?
if that radio is of the anti-theft variety make sure you know the code and how to enter it
Posted on Dec 25, 2009
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