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Old 11-09-2013, 06:45 PM   #1
k177's Avatar
Join Date: Mar 2013
Posts: 91
Lehigh valley HELP!!

is there any jeeper near or in Lehigh valley that knows np231 and the vac system for it? Winters coming and I'm looking for some help fixing my 4wd its a 87 4.2l yj. I have tools and would be willing to buy the food and pay for your help.

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Old 11-10-2013, 12:41 PM   #2
Crash98's Avatar
Join Date: Oct 2012
Location: Williamstown
Posts: 138
What's wrong with the 4wd, we can probally just tell u what to look for. A common problem with the yj is the 4wd vacuum acuator on the front axle towards the passenger side. It has 2 vacuum hoses going to it. They cost about $100 new, if its bad you can easily replace it or switch to a cable. If your 4wd light isn't coming on inside when u engage it, that's probally what it is.
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