Question about Mercury Mountaineer
Crank but wont stay running
This switch would be located in one or two places. If you have Air-ride suspension the Inertia switch is usually close to the Air-ride switch. Sometimes there is a plastic cover over the switch in the rear cargo area. The rest of the time the Inertia switch is in front by the front seat kick panels.
There is a reset button on the switch, just press and hold for a second or two and the reset is made.
Posted on Jan 02, 2014
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Posted on Jan 02, 2017
Check the fuel pump reset switch again, if it is popped back out then replace that little switch in the trunk, any ford one will do. it works off a magnet and a bearing to close the circuit for the fuel pump. easy fix.
Posted on Dec 20, 2009
SOURCE: Truck won't stay running
if it is a electric fuel pump take the fuel line off carburator and get a three foot gas line hook it up to the gas line on the car run gas line into an empty gallon container and turn key on and see if you are getting a good flow of gas
Posted on Jun 23, 2008
i actually have a 1985 302 efi... there are 2 pumps one one the rail right under drivers door and one in the tank.. there are also two filters... one just behind the pump one the rail.. its actually inside a canister that you open with a oil filter wrench then it has a paper element inside..then there is a inline filter that is actually part of the high pressure line the hose is about 3 feet long and runs from your front pump up to the fuel rail agaist the firewall...this one is really hard to find (Buy) good luck wish i hade a carb
Posted on May 25, 2009
Same problem with my 85 F-150 5.0 EFI---turned out that the fuel pump relay under the hood was teriffically corroded on the inside (I opened up the relay to look inside). When I checked the voltage at the fuel pump it would show 3.5-6 volts instead of 12 volts.
I was thinking fuel blockage or perhaps failure of the in-tank pumps. Sometimes the truck would start and run, othertimes it would neither start nor run. Typically, if running it would stay running until turned off (where the relay had to break).
Changing the green fuel pump relay fixed the problem--12 volts now at the pump and no reoccurance.
Good luck--let me know if this fixed your F-150.
Posted on Sep 22, 2009
you'll need a professional computer to reset how ever there are two relays for fuel on chevrolet
i would suggest finding the second one first
Posted on Dec 14, 2009
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