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 05-24-2018, 02:58 AM   #1
Fbks_Cruiser
Senior Member
 
Fbks_Cruiser's Avatar
 
Join Date: Apr 2016
Location: Fairbanks, AK
Posts: 328
Wipers run at high speed for either position of switch

So today I went to use my windshield wipers and found that when I turn the switch to either the low or high position, the wipers run at high speed. Did a search on the forum and found Loc Doc’s write up:

http://67-72chevytrucks.com/vboard/s...d.php?t=413551

It looks like to run at low speed, two motor terminals (1 and 3) get grounded. If there is a fault in that ground circuit to terminal 3 the motor will run at high speed regardless of switch positioned at high or low. Sound right?

In you experience where is the most likely place to start looking? The switch? Motor? Bad connection somewhere? Switch is easiest to access so maybe I should start there.
__________________
1972 GMC K2500 Super Custom

Matt
Fbks_Cruiser is offline   Reply With Quote
Old 05-24-2018, 06:38 PM   #2
BCOWANWHEELS
Registered User
 
Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
Re: Wipers run at high speed for either position of switch

Time for new switch
__________________
I BELIEVE IN JOHN 3:16
BCOWANWHEELS is offline   Reply With Quote
Old 05-24-2018, 11:10 PM   #3
Fbks_Cruiser
Senior Member
 
Fbks_Cruiser's Avatar
 
Join Date: Apr 2016
Location: Fairbanks, AK
Posts: 328
Re: Wipers run at high speed for either position of switch

Kinda what I thought too. I have two other switches I can swap with and see what happens.
__________________
1972 GMC K2500 Super Custom

Matt
Fbks_Cruiser is offline   Reply With Quote
Old 05-24-2018, 11:55 PM   #4
BCOWANWHEELS
Registered User
 
Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
Re: Wipers run at high speed for either position of switch

You can get a new one cheap from rockauto
__________________
I BELIEVE IN JOHN 3:16
BCOWANWHEELS is offline   Reply With Quote
Old 05-25-2018, 01:01 PM   #5
TheRocket
Registered User
 
Join Date: Mar 2016
Location: Goodwell, OK
Posts: 63
Re: Wipers run at high speed for either position of switch

Quote:
Originally Posted by BCOWANWHEELS View Post
You can get a new one cheap from rockauto
Try your local parts store. My CARQUEST and NAPA stores can get them if they don't have them in stock. Except for body parts, I find I can buy most things locally. Please support your locally-owned businesses.
TheRocket 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 11:44 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com