Question about 1989 Jeep Comanche

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Four wheel drive wont work. just replaced the vaccum tubes. and the 4wd wont kick in.

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Possibly a bad /faulty switch .ensure the lines are all not dry-rotted and connected and routed correctly as well as make sure all the fuses that may operate the switch are not blown

Posted on Dec 12, 2009

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1 Answer

When i put it in 4wd the light comes on but the 4wd dosent kick in


When transferring into or out of four wheel drive, generally the vehicle needs to be in park or neutral in order for the transfer case to kick in. If it still doesn't kick into 4WD when the vehicle is stationary and parked, I'd highly advise visiting a local mechanic to check your 4WD system.

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I had this same problem on my 96 Jimmy.Check under the hood for cracked vaccum lines. You may have a vaccum line that is letting vaccum escape and not allowing the 4WD to engage.
Tony www.1aauto.com

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