post #1 of Old 03-05-2012, 11:28 AM Thread Starter
SethGCherokee
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1998 ZJ 
 
Join Date: Aug 2010
Location: Kansas City
Posts: 20
98 ZJ NV-242 trouble

I have selectrac on my 98 ZJ, it has 140,000 miles. Transfer case was drained and refilled several times since new. Symptoms: When i was given the car from my grandma the 4WD engaged and disengaged but had excessive amounts of wheel hop at low speeds (steering wheel is nearly uncontrollable and turns back and forth, also requires more gas to move when turning) it would stop after having the car engaged or disengaged for a day or so. Even then with the wheel hop there was no new noise. I soon figured out i could avoid the wheel hop that first day when engaging by doing so at highway speeds. About 6 months ago i put it into full time and the wheel hop starts to occur except now there is a very loud grinding noise, in part time and full time. It seems to be coming from the mid front of the vehicle, so transfer case or front axle. It gets louder with speed even more so when you coast on the highway. Its less prominent when accelerating. Have tried to research the 242 but i can't wrap my head around it. I took it to a shop and they showed me excessive amounts of silver shavings in the front differential, so i had it drained and filled with new fluid which did nothing. If you put it back into 2wd it would disengage about a day or so later and problem would stop. I started playing around on gravel and figured out that if i induce the loss of traction while in 4wd the problem stops. But when i go to disengage it, i have to do the same thing. ANY IDEAS or THOUGHTS, HELP of ANY kind would be fantastic!

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4wd , selec trac , transfer case


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