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1997 Dodge Truck 4 wheel drive light

Tiny
HAMMERANANAIL
  • MEMBER
  • 1997 DODGE TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 190,000 MILES
The 4 WD light on my instrument panel is on when 4wd is not engaged- sometimes flickers or strobes depending on speed of vehicle-whats up?
Monday, January 26th, 2009 AT 10:47 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
There is a sensor on the transfer case that sends a signal when you are in 4wd. I believe it is actuated by vacuum. I would start by checking that.

Let me know what you find.

Joe
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Saturday, March 14th, 2009 AT 1:48 PM
Tiny
COONHILL2007
  • MEMBER
  • 5 POSTS
I had the same problem with my 96 dodge. Check the vacuum at the 4wd actuator on the passenger side of the front axle. There is 2 lines that run into a diaphragm, one should have vacuum with the lever in 2wd and the other when its in 4wd. If vacuum is good at both of these lines, take the 4 bolts off that hold the cover on and check the shift fork inside. My shift fork got worn and stuck in the 4wd position evnethough my truck was in 2wd. If this is the case you may need to replace the fork.

Hope this helps.
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Thursday, June 11th, 2009 AT 2:05 PM

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