So my windshield wipers are "jumpy" when wiping. Doesn't matter if its a mist sweep, delay, low or high setting they kinda just jump on the windshield on the up stroke. Any advise on this? I had a bad board before and changed it and got my delay back, but prior to that new board and now they just on the up stroke.

Thanks in advance,
Tate

More than likely, your blades are 'skipping' on the glass because you got something on the glass like silicone or wax...or the blades are old. Even Rain-X prefers you dont turn on wipers, because the oils in it that cause the water to sheet off, also can make blades skip. I used Rain-X on my own cars before, and never turned wipers on because of the way they bounced along the glass.

Windshield has been scrubbed with 0000 steel wool and nothing added. The wipers are less then 6 months old and on the down stroke when not bouncing do a great job of cleaning the glass just bounces or jumps on the up stroke.
Tate

Check your wiper blades to see if they can be attached 180* off. Maybe they are not flopping over properly on the up stroke.

So messing around and added another ground strap and it seems to have stopped the jumpy wipers. This car loves grounds for sure.
Tate

quote Originally posted by PontiacTate: So messing around and added another ground strap and it seems to have stopped the jumpy wipers.

I'd have thought it would be distracting as hell with this ground strap being dragged back and forth across your windshield.

So the wipers werent bouncing on the glass, the actual motor was making them jerk ? Weird...

Another old school thing we used to do for blades skipping on the glass was just to bend the arms down some to put more pressure against the glass. Im sure with age, those springs gradually get weaker.

quote Originally posted by rogergarrison: So the wipers werent bouncing on the glass, the actual motor was making them jerk ? Weird... Another old school thing we used to do for blades skipping on the glass was just to bend the arms down some to put more pressure against the glass. Im sure with age, those springs gradually get weaker.

Maybe... Anything causing low volts can cause problems for any motor including burning out the control circuitry.
See my Cave, Electric Motors

Wiper Motor only ground is a jumper to a "rivet" in the rubber. Jumper can corrode, rubber rivet screw and/or body have problems.
GM made this motor setup to save factory time to build the car.
If you have wiper problems then can run a 14-12ga wire motor to body.
If drilling the motor/gear case then drill where cuttings etc can't get into the guts.

CLEAN Glass w/ Bon Ami (Even GM call for this)
Do Not use Rain X etc on Windshield & rear glass w/ wipers.
Use good wipers. Cheap wipers often won't last more then a month or two before have problems.
https://www.fiero.nl/forum/A...319-2-015544.html#p6
Ref to TSB 91108 Nov90 Cleaning For Procedure Chattering Wiper Blades

Bending the arms often won't help. Springs last a very long time but heavy rust can thin out the spring. When that happens only option is find new/better arms.
Plus depending on wipers... Might not clear the hood when bent.

Wipers only last 6-12 months. Even gimmick wipers like old Tripledge w/ "lifetime warranty" in many areas. Silicon might last longer but not a lifetime option unless like many sold or return a lease car under 3-5 years.
Thin "rubber" + ground level ozone and other chemicals + UV + heat will wreck them.
Dirt on glass can scratch the glass but also wreck any wipers.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

[This message has been edited by theogre (edited 01-08-2017).]

quote Originally posted by Patrick: I'd have thought it would be distracting as hell with this ground strap being dragged back and forth across your windshield.

quote Originally posted by Neils88:

.. ..

quote Originally posted by Patrick: I'd have thought it would be distracting as hell with this ground strap being dragged back and forth across your windshield.

Lol