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This is an old but very current problem also. I just replace my second 97 caravan motor in 6 months because of severe grinding noise and it was the motor both times. I got another re-mfg replacement motor last week and it is totally quiet. Before you install the crank arm on the motor you operate the wiper switch in all positions to check that the computer is running it intermittently, slow and fast etc. that it and shuts it off at the same position every time. That shut off position is park. Unplug the external motor connector or fuses. Now push the mechanism arms fully to the right and install the crank arm at two o'clock on the motor shaft, which gives you just enough room to install the hold down nut. Hold one of the metal bars so you don't turn the motor during tightening the nut. Now reconnect the power plug and test the operation. The motor should shut off with the right end arms fully extended, which, when connected with the blade arm, will make them stop at the bottom of the windshield. Install the driver side wiper arm slightly above level and the left arm 4 inches below that. Don't power tighten yet. Test the operation. If they hit each other adjust one or the other away. This works for most all wiper adjustments. When you get everything looking right and sweeping the full window and not the body. Start tightening and putting every thing back together. Also clean out the wiper pan and the two drain hoses. The hoses can be pulled loose below the pan. LOL
you will have to remove the panel under the wiper arms at the bottom of the windshield remove the wiper arms by popping off the little caps at the bottom of the arms where they used to pvvot. remove the nuts that hold on the arms and pull the urms upward then unsrew the panel to get inside to see which part broke off. these wiper trnsmission artms are ussually only available from the dealer.
the wiper arm could need to be replaced
being loose could have have worn the hole in the wiper arm
or the splines on the wiper transmission maybe damaged
i would try a new wiper arm first
use BLUE LOCTITE on the threads and TORQUE the nut to (22 lb ft)
hope this helps
Yes you can adjust them yourself. First you need to check that the wiper arms are not bent. If not, remove the cap at the wiper arm base, under it u will find a nut, remove this nut. you should now be able to remove the wiper arm. (it is comon for caravan wiper arms to be corroded on. If the arm dosen't come off, you may need to heat up the wiper arm with a propane torch. be careful not to melt the plastic cowel under the arm. OR you can use a wiper puller or a battery puller. do not force it, you can break the arm, DO NOT PRY AGAINST THE COWEL OR WINDSHIELD.
Once both arms are off, turn your van on and turn the wipers on. watch the wiper posts, turn the wipers off and watch the wiper posts return and stop in the "parked" position. Turn the van off. Install the passanger wiper arm first, it is positioned closest to the bottom an inch or two above the black cowel. It should be parrallel to the cowel. next install the drivers side wiper arm. it is positioned about 4 inches above the passanger wiper. again running parrallel to the cowel and passanger wiper. tighten the lock nuts down (do not over tighten) wet down your windshield with glass cleaner or windshield washer fluid and test wipers. If they still hit you can lower the passanger one a little or raise the drivers one a little (careful you don't raise the drivers one too much or it will 'jump' off the windshield at the top of the wipe).
good luck, hope this helps.
disconnect the wiper transmission from the motor, then run the motor and turn the motor off with the wiper switch, this will park the motor, re-attach the wiper trans linkage so the wipers are parked/down
This is not a huge problem. Just be aware to take all the screws out and always organize the way you dismantle the system. To check and ask for parts go to: www.rockauto.com ANSWER THE QUESTION: IS IT THE PROBLEM THE WIPER MOTOR OR THE CONTROL ARM ON THE WHEEL? BE AWARE OF THIS.
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