1997 Ford F-150 four wheel drive

Tiny
JFASTOR
  • MEMBER
  • 1997 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 148,967 MILES
It won't shift into 4h or 4L when you flip the switch. Checked all the fuses they're good. Checked the wiring is fine. What can be? How can the switch be checked?
Do you
have the same problem?
Yes
No
Monday, April 27th, 2009 AT 5:32 PM

1 Reply

Tiny
DAVE H
  • EXPERT
Have the vehicle plugged into a diagnostic computer it should be showing a fault code !

Vehicle Does Not Shift Between 2WD & 4WD High Modes Properly
Possible causes: 4WD mode switch, 4WD clutch relay, contact plate sensors, T/C shift motor, transfer case and/or GEM. Go to TEST A under TESTING.
Vehicle Does Not Shift Between 4WD High To 4WD Low Properly,
Shifts Properly Between 2WD To 4WD High, 4WD High To 2WD
Possible causes: 4WD mode switch, vehicle speed sensor, BOO switch, transfer case, TR sensor and/or GEM. Go to TEST B under TESTING.
Front Axle Not Engaging Or Disengaging Properly
Possible causes: 4WD solenoid, 2WD solenoid, vacuum motor, vacuum lines, front differential and/or GEM. Go to TEST C under TESTING.
4WD LO &/Or 4WD HI Indicator Light Not Operating Properly
Possible causes: light bulb, TR sensor and/or GEM. Go to TEST D under TESTING.
4WD HI Does Not Engage At Speed Properly (Driveline Does Not
Synchronize Properly) But Does Engage At Rest
Possible causes: ESOF clutch relay, internal clutch, hub release spring and/or wiring harness. Go to TEST E under TESTING.
No Communication With GEM
Possible causes: Fuses, harness and/or GEM. Go to TEST F under TESTING.
Was this
answer
helpful?
Yes
No
Tuesday, April 28th, 2009 AT 4:40 PM

Please login or register to post a reply.

Recommended Guides