I have a 2000 jeep TJ and periodically the wipers won't work .It seems to happen when we have had snow and temperatures are below freezing.My friend has a 1998 Jeep and the same thing happened to his Jeep a few days ago.I recall on one occassion,I was driving along and all of a sudden,they started working again.I am thinking that perhaps something is freezing up ???I was wondering if other Jeep owners have experienced the same thing and if so...did they solve the problem and how?
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The windshield wiper circuit has an circuit breaker in it, under heavy load this breaker trips to protect the wiper motor, when the motor cools, the breaker resets automatically restoring proper wiper action.
You can usually avoid that by using a good quality winter mix washer fluid that resists freezing, making sure the wipers are cleared of ice before beginning the drive and using the defroster to keep the windshield warm. In extreme conditions you just need to pull over and manually clean the ice off by hand.(only do that where it's safe). There are also specially designed wiper blades that will also help a bit.
You should check your fuses first. What may of happened is that the wiper motor could be frozen if the wiper arms are frozen in ice. Another thing that may of happened is that the wipers were used to clear the windshield instead of clearing it manually. When that is done if there is too much snow or it is a heavy snow the wiper motor will burn up or go bad due to the fact that it does not have enough power to do such things.
Ok, If wipers were frozen to windshield at one point, it is possible to either blow fuse or burn out motor. The motors used on Jeeps are pathetic... sometimes unable to run on a dry windshield unless water is sprayed on it! Same goes for wiper transmission... If you moved it by hand, you can bend or otherwise damage it, but that is less frequent! Check fuse, relay and motor for power (in that order) and you will likely find the problem.if you haven't already!!!
I had a similar problem with my 2000 Jeep TJ and I found the problem in the wiring harness under the hood.several wires were corroded and almost burnt off.If you remove the black tape which keeps the harness bundled together and if you see evidence of "green" type powder or "gook" it's most likely where the wires have faulted.