The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-12-2017, 05:42 PM   #1
Bagd72Chevy
C10 Collector
 
Bagd72Chevy's Avatar
 
Join Date: Oct 2003
Location: Baton Rouge, LA
Posts: 349
Wiper Motor Hot to Touch

My wiper motor is hot to the touch. Im guessing somekind of internal short. Has anyone else encountered this before?

Thanks,
Ryan
__________________
///Ryan
1972 Chevy C-10-Bagged, Blown LT1, 700r4, Suicide Doors
1967 GMC- SC & Cam'd 4.8, built 4l80, 3200 stall, posi, 3.73
Bagd72Chevy is offline   Reply With Quote
Old 10-12-2017, 09:29 PM   #2
HO455
Registered User
 
HO455's Avatar
 
Join Date: Feb 2016
Location: Portland Oregon
Posts: 1,756
Re: Wiper Motor Hot to Touch

It could be low voltage to the motor. The voltage is easy to check. There are several threads on troubleshooting wiper motors and switches if you do a search. A bad ground can cause the voltage to be low too.
Or it could be too much resistance from the wiper arms and the bushing through the firewall. (Which I had on my Burban.) The resistance check would require removing the motor and running it disconnected from the arms to see if it runs cooler.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
http://www.superiorperformancenw.com
1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F1-3 Ford 4X4
If it breaks I didn't want it in the first place
The WMB http://67-72chevytrucks.com/vboard/s...d.php?t=698377
HO455 is offline   Reply With Quote
Old 10-12-2017, 11:08 PM   #3
Bagd72Chevy
C10 Collector
 
Bagd72Chevy's Avatar
 
Join Date: Oct 2003
Location: Baton Rouge, LA
Posts: 349
Re: Wiper Motor Hot to Touch

Sorry, forgot to mention this was with the switch off. Motor not spinning but it was hot. Hadnt been on all day. No wiper arms installed yet.
Posted via Mobile Device
Bagd72Chevy is offline   Reply With Quote
Old 10-12-2017, 11:54 PM   #4
HO455
Registered User
 
HO455's Avatar
 
Join Date: Feb 2016
Location: Portland Oregon
Posts: 1,756
Re: Wiper Motor Hot to Touch

That's not a good sign. Sounds like the motor is stuck out of the park position and is trying to get there. I would unplug it now! Have you removed it from the firewall? My firewall bushing was dragging so the wipers were moving at about half speed. Yours maybe worse than mine was.
Another possibility is the brushes in the motor are so worn that the motor can't turn to get back to the park position.

Here is Lockdoc's thread on wiper electrical to help you test the circuitry.

http://67-72chevytrucks.com/vboard/s...d.php?t=413551
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
http://www.superiorperformancenw.com
1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F1-3 Ford 4X4
If it breaks I didn't want it in the first place
The WMB http://67-72chevytrucks.com/vboard/s...d.php?t=698377
HO455 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:56 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com