Question about 1989 Jeep Cherokee

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New to 4x4

I have just bought a 1989 Jeep Laredo 4x4. I'm new to 4x4 and this jeep did not come with a manual. The 4x4 does not seem to be working, but I might not be engaging it right. How do you engage and disengage the 4x4?

I have been putting it in neutral and pulling the lever into 4x4 high. I have only had the car for a couple of days and it has been snowing the whole time so I have had ample oppurtunity to try the 4x4. At times it seems like it might work, but at times I know it is not.

Also,
How fast can you drive in 4x4 high? 4x4 low?

Thanks for any help you can give me.

Posted by on

  • frkirk Dec 26, 2008

    Thanks... I won't be able to try this until next week when I return home.



    Will certain speeds damage the 4X4, or is it the same as 2 wheel drive?

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I HAD BEEN HAVING PROBLEMS ENGAGING MY 4 WHEEL DRIVE AND IT WAS A VACUUM PROBLEM CHECK UR VACUUM LINES THE IMPORTANT ONES FOR THE 4X4 RUNS FROM THE DRIVERS SIDE OF THE ENGINE TO A CANISTER ON THE PASSENGER SIDE BEHIND THE FRONT BUMPER THIS VACUUM CANISTER ALSO SUPPLIES THE VAC FOR UR AC AND CRUISE.

Posted on Dec 31, 2008

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Best way to engage 4x4 that I've found is to keep the vehicle rolling at 15-30mph and just engage 4 high. Generally, you don't need 4low unless in extreme conditions (pulling stuff etc) It gets about as much use as driving in 1st gear with a passenger car with auto trans! When disengaging, do the same... generally does not disengage for a few yards, but it will eventually! There is usually a brief summary on inside of sun visor. you can usually find a owners manual in scrap yards, if they let you check glove boxes.Unless you buy a shop manual, if you have ever driven anything, there is pretty limited info in them, but still a good "quick reference" for simple stuff.

Posted on Dec 26, 2008

  • Richard Scordino Dec 26, 2008

    When running in 4wd, Generally road conditions are not good enough to run at any real highway speed.
    Remember, 4wd dosen't make you "bulletproof"... Ice and very slippery snow will still cause sliding out of control! Do not use 4wd on dry roads and NEVER use different size tires (all tires must have the same rolling diameter... even the difference between new and old of same brand or, the same size but different manufacturer, can influence this! (exception being the use of emergency spare, at low speed for a very short distance preferably with 4x4 disengaged)
    On a vehicle new to you, I suggest strongly that you change fluid in front & rear differentials, transfer case, transmission and engine, as well as antifreeze. Then, begin a maintenence schedule from there.
    Good luck with it!!


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