Question about 1989 Jeep Cherokee

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Transfer case wont work

I just switched the transmission in my 1991 jeep cherokee laredo with a 4.0 liter. The vehicle that I switched it from is a 1989 jeep cherokee laredo with a 4.0 liter as well. The problem that I am having is when I bolt the transfer case onto the transmssion and get everyting hooked up where it is suppose to go, I hop into the vehicle and start it up and put it into gear. But the shaft on the back of the transfer case where the main drive shaft hooks up to will not spin, even when I accelerate more. What should I do?

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  • cycleboy91 Jan 25, 2009

    Well I do know that when I go and put it in gear then back in park that the trannie is grinding alot. So I think that the trannie is spinning but I am not sure. But I will try all those things that both of you said, and thank you for the very quick response

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Are you sure the spline count on the new tranny's output shaft matches your existing transfer case? Jeeps during those years used a 21 spl. and a 23 spl. transfer case. In other words, your tranny may be spinning, but the output shaft is not engaged to the transfer case shaft, or just barely, and thats why you hear it grinding. you need a different transfer case, one with identical spline count.

Posted on Jun 22, 2009

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Sounds like the Transfer case is in neutral. Maybe a vacuum line came off (if used) or wiring harness came off. Transmission fluid too low? I hope this can help you. Best wishes.

Posted on Jan 25, 2009

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Might want to make shure the shifter linkage arm is in gear. if the linkage is bent at all it will hold the trans inbetween gears not allowing the motor to spin the drive shaft

Posted on Jan 25, 2009

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