4 wheel drive problems
Thread Starter
|
Junior Member
Joined: Jan 2014
Posts: 6
Likes: 0
4 wheel drive problems
I have a 1998 ford f150 4.6 and I can't get the four wheel drive to work I put a new motor on it check the range switch the I can get the axels to lock in but I got to go ahead and put it in what range I want it in and then unhook the battery terminal wait 15 seconds then hook it back up and it locks the front end in but not the transfer case but once the front end is locked in it wont lock out until you do the same thing to the battery I need help ant got a lot of money unemployed can't buy a computer to check it
Senior Member
Joined: Jul 2004
Posts: 6,200
Likes: 39
From: Easton, Pa.
You first self help is understanding how the system works so you can trouble shoot.
The gyrtions you go though are indicative of the trouble area.
Here is how it works from the beginning as you operate the dash switch to 4H.
The switch tells the control module to operate the case motor to it's first position.
This engages the front drive shaft, operates a firewall solenoid relay that routes vacuum from the motor's intake tract to the axle actuator and returns a signal back to the module to light the dash lamp..
The actuator locks the front axles together.
.
Trouble shoot from switch on with motor running.
How far does the sequence go before a failure in this sequence is noted?
Remember the case motor has to be powered by the control module through a relay and also reverses when you switch 4X4 off.
For get what you do to get it back. When you find the problem it will make sense then.
Good luck.
The gyrtions you go though are indicative of the trouble area.
Here is how it works from the beginning as you operate the dash switch to 4H.
The switch tells the control module to operate the case motor to it's first position.
This engages the front drive shaft, operates a firewall solenoid relay that routes vacuum from the motor's intake tract to the axle actuator and returns a signal back to the module to light the dash lamp..
The actuator locks the front axles together.
.
Trouble shoot from switch on with motor running.
How far does the sequence go before a failure in this sequence is noted?
Remember the case motor has to be powered by the control module through a relay and also reverses when you switch 4X4 off.
For get what you do to get it back. When you find the problem it will make sense then.
Good luck.
Thread Starter
|
Junior Member
Joined: Jan 2014
Posts: 6
Likes: 0
That's what I was going to try but I loose power to the range selector it will just stay on from seconds to minutes not very long but another thing that occurs is my abs light comes in I don't know if this is related to it but I don't get power long and were is the control module