Windshields and Wipers

How do you fix wipers that stop in the up position?

939495

Top Answer
User Avatar
Wiki User
2011-05-24 01:18:51
2011-05-24 01:18:51

If your wipers work just fine on "intermittent" (they sweep across the windshield and return to the bottom of the windshield then wait about 5 seconds until the next sweep and repeat) but when you turn them to the "Off position then they stop in the up position rather then park then the parking pawl probably has a broken spring and is not working correctly. The pawl is a 1.25" long piece of metal external to the motor and is part of the Stack-O-Plates on the output shaft of the motor and to which the wiper push rods are attached. When you turn the wipers to "Off" the motor will reverse direction and the pawl will catch on a stationary tab that is part of the motor/wiper frame. This will hold the wipers in the down position while the motor continues to run and allow the parking Stack-O-Plates-Spring-Wrapped gizmo to do its magic which drags the wiper arms down into the extra low "parked" position. If the tiny spring that holds the pawl in the out position breaks then the pawl will not engage the stationary tab. The wipers will then continue swinging upward through half a swing at which point a cam/switch that is internal to the pulse board (the cover on the motor output gear (three T20 Torx screws to remove) will tell the motor to stop because it thinks the parking Stack-O-Plates gizmo has finished doing its job but instead the wiper arms will be stuck in the "Hello, I'm a dork" raised flag position.

WARNING: Use caution while working around the wiper mechanism. If the key is on and the wiper lever is set to "Intermediate" then the motor can start unexpectedly. If your fingers are down there in the wrong place, the mechanism has more than enough power to break bones and/or peal the skin right off of them. Don't be afraid, just be deliberate and methodical and always be aware if the motor/electronics are energized.

It is very easy to remove the motor/wiper assembly so do not hesitate to do so:

Remove the plastic covers off the wiper arm retaining nuts.

Remove the wiper arm nuts with a 13mm socket.

Twist and pull with your finger tips and finger nails at the base of the small rubber squirt tubing off the hard plastic squirt delivery tubes.

You may have to yard up and down on the wiper arms pretty hard to get them loose from their tapered shafts. Don't be a mindless gorilla but be brave and keep at it. They will come loose.

Remove the cowl cover by pulling or prying out the center of the six retaining push pins. Then lift the cowl cover up then out at a 45 degree angle. You will find the cover is a very tight fit between the right hand wiper shaft and the weatherstrip at the base of the windshield. Be brave and keep pulling and prying until it comes loose.

Reinstalling the cowl cover and getting the rubber weather strip over the cover is the hardest part of the whole job. Use putty knifes (slowly and carefully!) or a very small slender screwdriver. It took me half an hour just to do this part of the job that. ugh.

Remove the 3 bolts holding the wiper assembly.

Disconnect the electrical connector by squeezing the retaining tab that you cant see on the backside of the connector. You have to squeeze real hard.

Lift the wiper assembly out.

Remove the Stack-O-Plates assembly from the motor output shaft (T30 Torx) to access the pawl to put on a spring. I wrapped one and a half loops of spring around one protrusion on the end of the pawl and around one tab of the stationary clip that limits the swing of the pawl to hold it in the "swung out" position. The loop of spring applies very light pressure but that is all it needs. This will all make sense when you are looking at the pawl mechanism. I cut off one and a half loops from a spring like what you would find in a retractable ball point pen but bigger. Use what spring you can find even if it from a ball point pen. When the motor runs in the forward direction the pawl harmlessly swings out of the way as it passes by the stationary tab. Bend the stationary tab in or out as necessary so the pawl engages straight on to it. I will try and post pictures of all this.

Before remounting the whole Stack-O-Plates gizmo assembly you will need to set the motor into the correctly timed position. Plug the motor in, then turn the wipers to "Intermediate". When the motor stops then turn off the ignition switch or quickly disconnect the motor. The motor is now in the correct position. Remount the Stack-O-Plates so there is about 1/4" to 1" space between the pawl and the stationary tab. Tighten down the T30 Torx bolt (blue lock tight recommended) then test the unit to see if the pawl engages to the stationary tab and lets the parking Stack-O-Plates do all its parking gyrations before you remount the whole wiper assembly. When you are all done try not to wear out the wipers by constantly turning them on and off for the next few hours of driving just so you can marvel at your handy work. :O)

Buy the way, if you turn the wipers off and they just wiggle a little bit while the motor goes click-click-click-click trying to do its parking thing then you need to alter (slightly) the relationship between the cam/switch arm inside the pulse module (again, the cover on the motor output gear, three T20 Torx screws to remove). There are two switch/contact arms in the center of the pulse board. The one closest to the board that engages the plastic cam mounted to the board is the one you want to change slightly. The other free floating arm is driven by the cam on the big motor output gear and is the contact to let the electronics know the output gear has rotated half a turn and the wipers are now parked. I bent the one arm closest to the pulse board away from its cam just slightly so that only about 3/4 of the "hook" on the end of the arm (you will know what I mean when you look at it) is hitting the ramp on the cam (the cam spins clockwise). Verify that the electrical contact actually opens a bit when the arm is riding on the high part of the cam. You may have to adjust and verify a number of times to find that sweet spot where it runs reliably. It took me half an hour of fiddling. O_0

12
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0

Related Questions

User Avatar

Could be out of synk need to loosen and reset then tighten back up

User Avatar

A bad pulse board or window wiper motor can cause your wipers to stay in the "up" position.

User Avatar

My mechanic replaced a pin in my 2002 Pontiac Montana wiper motor and that solved the problem. It was a very easy fix. The pin is visible if you look at the top of the wiper motor.

User Avatar

when u turn wipers off they stay at up position. while in up position remove wiper arms from vehicle then place wiper arms at down position and renistall on wiper motor shaft. that should fix the problem

User Avatar

The car wipers should not stay up but return to their original position. The wipers will stay up if the wiper motor, the wiper controller and the wiper linkage are faulty.

User Avatar

There are two positions for the wipers on an ES330, winter and summer position. The summer position is down under the hood, and the winter position is where I imagine they are now. To switch between the two, just requires a push down to summer position, or a tug up to winter position. The idea between the two positions is that in winter, with snow on the car, the wipers won't get stuck underneath the hood, but during the summer, when that isn't a concern, they can be tucked out of the way for a cleaner look.

User Avatar

You can try removing the wiper arms by extending the arm upwards and popping it off then reinstall them where they should rest. If this does not fix your problem then you need to replace the wiper motor because it ha s been burnt up by trying to use your wipers while they were frozen to the winshield and not able to move.

User Avatar

why is it after I hooked up the linkage for my wipers the wipers stay in the upright position after I turn them off.

User Avatar

If wipers stay stright up went turned off, you needs new motor. There are two parts to the motor, one is working and the other is not. Had same problem. new motor fix it

User Avatar

1. Turn on the rear windshield wipers. 2. Stop the wiper manually as it crosses the center of the window. 3. Lift the wiper blade up on the hinge as you would a front blade (this should de-activate the wiper mechanism and stop movement). 4. Change wiper blade. 5. Return blade to original position in which it was stopped. 6. Turn the wipers off then on.

User Avatar

They usually don't do that, but if you turn the car off while they're still going, they might get stuck that way. To fix that just turn the car back on. They should go back to the "down" position, then you can turn the car off again.

User Avatar

1997 gran prix wipe stay in upright possission when shut how to fix

User Avatar

There is a problem with the parking linkage. TAke it to a garage.

User Avatar

The wiper system has a stopping point on the motor, or a rest position. If your wipers are straight up then the wiper control arms are set wrong. go through the entire wiper system, looking for loos bolts or joints or bolts. The motor seems good, its just an adjustment issue.

User Avatar

the park tab is bent. it is a thick piece of metal that must be bent back slightly toward the wiper motor with a hammer or plyers. I assume this issue started when there was snow/ice on the windshield?

User Avatar

The motor shaft and the wipers are'nt connected properly(the timing is off), just disconnect the wipers from the motor. Turn your car on and cycle the motor and it should be back at the home position. Pull your wipers back down and reconnect and all should be fine.Thats if you put in a new wipermotor. If not, maybe the wiper switch is bad.

User Avatar

I've got a better question, why is this question in the Chevy venture forum ?

User Avatar

the park tab is bent. it is a thick piece of metal that must be bent back slightly toward the wiper motor with a hammer or plyers. I assume this issue started when there was snow/ice on the windshield?

User Avatar

You can detailed instructions on how to reset your wipers on youtube.com/watch?v=KFBLtlnkpuI

User Avatar

If necessary, turn the ignition switch ON and the wipers ON then OFF to bring them to the park position. Hold the wiper arm against the torque and loosen the nut which attaches the arm to the linkage shaft with a socketwrench ,remove the nut. Remove the arm and line it up with the lower end of the windshield then put it on the spines till they engage Install the nut. Then do the other wiper the same. Test to see they are working ok. Good Luck


Copyright ยฉ 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.