APC9199 wrote:
I think 50 is about the max speed you should be doing when shifting the 4WD, but I generally try to do it around 20.
The 2005 owners' manual says shifting between 2HI and either 4HI Part-Time or 4HI Full-Time has a recommended maximum speed of 55mph. This applies regardless of whether you're shifting into or out of 2HI.
In any event, there are three things to keep in mind:
- Shift only with the wheels pointed straight ahead.
- Do not shift if one set of wheels is spinning faster than the other (e.g., one end of the vehicle is on snow while the other end is on pavement).
- After shifting, it may be necessary to lift off the accelerator momentarily in order to let the selected range fully-engage; you can usually hear a slight 'thump' in the driveline when this happens.
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How often and with what product do you service the differentials? The service interval is technically every 12,500 miles for the differentials, with the proper lubricant depending on your type of use. Lighter gear oils for on-road and heavier for off-road.
Added to this: when was the last time the transfer case fluid (ATF+4, should be replaced every 30,000 miles) checked?
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I still don't see how any of this can cause the Jeep to veer to one side when changing from 4WD to 2WD. I didn't see an answer to one of my previous questions...did the steering wheel pull to the right along with the vehicle when this happened?
Ditto, and I'm curious about this as well. I have a theory, but don't want to poison the well by mentioning it yet - more info would be good to have.