How do adjust the wipers on a Pontiac Montana if they were stuck in the up position but now you have them coming down but not all the way?

Answer 1

Below is a cut and paste from another site.

Also I have seen reviews of the Montana stating that the alignment of the wiper crank arm is a typical problem costing about 1.25 hours of labor by a dealer.

Copied from another site:

You have a mechanical park switch which is part of the wiper crank arm.it acts as a clutch plate ,more than likely the mechinisim will have to be replaced .or Either the crank arm is bad, out of adjustment, or the crank arm tab is bent.

Install the crank arm on the wiper motor. Turn the ignition switch to the ACCY position. Set the wiper switch to PULSE position. The wiper motor should be operating. Turn the ignition switch to OFF when the wiper motor is in the innerwipe position.

Important Do not rotate the wiper motor shaft during the installation of the crank arm.

Install the crank arm on the wiper motor while maintaining a 4-8 mm (0.157- 0.315 in) gap between the V-grove in the wiper motor crank arm and the tab. Install the screw. Tighten Tighten the screw to 14-17 N?m (124-150 lb in).

Install the crank arm cover and seal.

Check the gap between the crank arm and tab. If the gap is not 4-8 mm (0.157- 0.315 in), remove the crank arm and repeat installation steps. Install the drive link on the crank arm. Tighten the two drive link screws. Tighten Tighten the two screws to 5 N?m (44 lb in).

Install the wiper system module cover. Operate the wipers and check for proper operation.

Another answer from another person.

The wiper motor turns one direction to drive and work. To park the wipers the motor goes in reverse. With the cover off over the wiper motor mechanism, oil the cam-slider mechanism that slips over in the wiper park position. This "overdrives" motion to park the wipers below the window. Run the wipers watching the motion and then have someone turn the wiper off and you will see this action and see the area to oil. This is impossible to see if the wipers are not in position.

A second thing to check which worked on my wipers when one stayed up was to manually move the wipers and physically by hand with the power off for safety. This seemed to reset an internal switch in the system. If you do not oil the cam mechanism, it will screw up again and again. When the cam does not operate properly, the motor seems to go into a safety shutdown that jacks up one wiper. I have not figured out 100% what happens if by chance or design.

Also if your windsheld wiper does not turn on contact your car fixer