My 1997 light duty f250 transfer case shifts to 4x4 but no power to front wheels. What are the troubleshooting steps?
May 8, 2006 at 4:33 AM
1997 Ford F-250 4x4 No Front Power
ALL OTHER MAKES ALL OTHER MODELS
WRJ
- MEMBER
- 5 POSTS
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Is it mechanical or electronic 4WD?
May 8, 2006 at 11:22 AM
It is a manual 4 x4 to engage the transfer case. Shift lever on the floor.
May 9, 2006 at 2:24 AM
Your truck uses a vacuum servo on the front axle. If you apply vacuum to the servo will it locks the axles? You can use a piece of vacuum hose and just suck on the end if you don't have access to a vacuum pump.
Good luck and let us know. :)
Good luck and let us know. :)
May 9, 2006 at 2:49 PM
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Suggested Repair
Test the front axle vacuum servo by applying vacuum with a pump or by suction through a vacuum hose to see if it locks the front axles. If it does not lock, inspect the servo and related vacuum system.
Conversation Summary
The owner of a 1997 light-duty Ford F-250 says the manual floor-shift transfer case engages 4x4 but the front wheels get no power. An expert advised testing the front axle vacuum servo by applying vacuum to see whether it locks the axles.