SOURCE: 2008 Ford F-250 Low beams do not work. High beams are fine.
just remove all the connections as it could be malfunction in the switches and the wirings needs to be rechecked to make it proper.other option could be bad dimmer switch. You will need to replace the turn signal/ dimmer switch as an assembly.to replace you will need to disable the air bag, drop the column, pull the wheel
SOURCE: Ford F150 front tires won't engage in 4 wheel drive
look on fire wall pass. side you will see 2 parts with vacume lines attached 99 percent of the time that is what went i had the same problem
SOURCE: no power to fuel pump or fuel pump wiring harness...
try the electrical ignition switch on the steering wheel colum
SOURCE: 2002 ford f150 4x4 manual transfer case vacum
The vacuum shift solenoids have power to one side of them at all times.
The GEM applies ground to them, to activate them, after the shift on the fly position confirm from the trans case.
The power to both should be on the White w/ Light Blue stripe wire.
Ground to them ( from the GEM ) is
2WD : Gray w/ Black stripe wire
4WD : Red.
The only TSB I know of is for the 04-06 MY trucks, for the IWE solenoids ( the kind without the water shield ).
Did you jack up the front end ( and support correctly ) turn the key to the run position ( do not start ), and shift into 4WD, and check the front drive shaft ?
If the shaft still turns, the problem is in the transfer case, if not you are looking in the correct place.
The GEM will not signal a vacuum solenoid until the transfer case has shifted into 4L or 4H ( 4 switches that are the return signal to the GEM ). Could be a problem with the connector on the transfer case ( think it is a 8 or 10 pin connector ) to the contact plate position switches in the trans case.
There is a manual front ale cable, but I would think you would want to confirm why the GEM is not signalling the shift solenoids, prior to replacing them
Posilock make a kit for the F-150
SOURCE: 1997 Ford F150 Electric Fuel Pump will npt pump
Did you check the fuel inertia switch in the passenger side kick panel ?
The fuel pump is powered :
the fuse to the fuel pump relay.
The fuel pump relay to the fuel inertia switch
The fuel inertia switch to the fuel pump itself.
At the fuel inertia switch in the kick panel, power from the relay is the Dark Green w/ Yellow stripe wire and the pink w/ black stripe wire is the power. from the fuel inertia switch to the fuel pump.
If you jumper the fuel pump relay, you should hear it run. If not pull the fuel pump relay, and check the pins in the relay socket, pin 30 should be the power from the fuse.
If you have power at pin #30, jumper the relay socket as shown with the red line above, and check the dark green w/ yellow stripe wire at the fuel inertia switch for power.
Press the button on the top of the fuel inertia switch, and check for power leaving the fuel inertia switch on the pink w/ black stripe wire.
This is tests good, check for power at the fuel pump, same pink w/ black stripe wire.
Fuel inertia switch info is in the owners manual, If you did not get an owners manual with your truck ( purchased used ), you can download one from Ford :
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp
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