Question about 1991 Jeep Comanche
Changed my old vacuum seal for a pull straight cable and it has broken I was wondering if I can fix it our have to buy a new set up.
I sold my 91. but what is a vacuum seal,
where is it, what system, (engine ,tranny, or transfer case?)
what cable. im at a loss....?????????????
Posted on Nov 25, 2013
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Posted on Jan 02, 2017
SOURCE: Vacuum lines for 4 wheel drive
if you look under the Jeep on the passenger side of the front axle you will see a vacume mod its kind of round shaped it should have a vacume plug on it wit ha few hoses going into it make sure its plugged in for starters these come off all the time if it looks good here simply follow the lines into the engine compartment and look for broken hose this should get you a fix most of the time, the mod could be defective but not likely.
Posted on Nov 28, 2008
SOURCE: 4 wheel drive not engaging
I do not have a vacuum diagram for the 89 Cherokee, but my 89 had the same issue several times and all it was is that the block of vacuum lines that go into the front axle on the rear of the axle on the passenger side of the vehicle. I ended up having to put a zip tie around the axle and hose block to hold it on. Have not had the issue again since doing this. Hope that helps.
Posted on Jan 25, 2009
there is a vacuum switch on top of the transfer case it applies vacuum when the truck is shifted in to 4 wheel drive . if you connect it to direct vacuum you front axle will be engaged all the time
Posted on Jun 12, 2009
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