SOURCE: vacum hose diagram
here is a good website with the repair manual
http://www.autozone.com/addVehicleId,2154701/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c1528018ee0e
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: need a full brake line diagram for 1992 ford
Too many variables here. Is there fluid in the master cylinder in the rear brake portion? Does a brake warning light come on when the brakes are applied? Is the pedal solid when braking or does it feel spongy? You could have a problem with the metering or proportioning valve. Since brakes are a safety item I suggest you check with one of the shops that offers free brake inspections.
SOURCE: 2003 Ford Windstar Both Brake light and ABS brake light come on
Ford has a recall for this problem.
SOURCE: I need to know how
Hello! What year is the engine?..........Guru...Saailer
I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867
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There may be a problem in the valve body. I had a problem like this and a ball in the valve body was sticking.
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