4x4 unusual problem
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Freshman User
Joined: Dec 2001
Posts: 48
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From: Olathe USA
4x4 unusual problem
I have been having alot of trouble with my electronic 4 wheel drive on my 98 f150. Sometimes it would come on and work fine and then not shift out.Sometimes would not shift into 4 wheel drive at all....About a month ago it shifted into 4high in a parking lot. Had to remove transfer shift motor and disengage front axles. Thinking I had a bad GEM module I just put a new one on and I have the same problem. It is still stuck in 4 wheel high...Has anyone had a problem like this....I don't think I have a bad swith but am looking for clues...Thanks for any info.
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Freshman User
Joined: Dec 2001
Posts: 48
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From: Olathe USA
I have looking at my wiring diagram and I see a transfer case electric clutch relay which it says it is in the RPO relay block. I have not found it yet. There is also a transfer case relay module behind the center of the dash. Let me know if you have any luck...I was going to try a different transfer case motor off my boy's truck. Is your truck locked in wheel drive also??? thanks for the input
New User
Joined: Nov 2005
Posts: 3
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got the truck fixed today and it was the gem it had a micro switch bad in it new one was $180.
thanks
for the reply.
thanks
for the reply.
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Freshman User
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From: Olathe USA
What was your truck doing..That is what I thought would fix mine but it did not and now I am wondering what to go after next
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New User
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the problem i was having was the transfer cace would shift into 4 hi and the front end would not engage and not shift back out . is there any way to put it on a scanner and get any gem codes for the 4x4 if so i can look them up on alldata and try and help you out?
jason
jason
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Freshman User
Joined: Dec 2001
Posts: 48
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From: Olathe USA
My truck shifted into 4 wheel drive high in a parking lot front and rear engaged...I had to manually shift out the transfer case by removing motor and turning it to 2 high..also had to disconnect vacum hoses and shift out the front end...I changed the GEM module , started truck with everything hooked up and everything went right back into 4 wheel drive high...Same as it did before and will not disengage...The Mitchell on demand printout of my 98 4.6 shows a transfer case clutch relay and a transfer case shift relay module, but I have not checked to see if I do have the clutch relay..