wipers arent working properly - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> General Rodding Tech
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 09-21-2007, 03:54 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
wipers arent working properly

i have a 70 elky and the wipers dont work properly. i turn them on (low or hi) and the arms go up a few inches and go back down. it seems like the arms might be jumping on the teeth or something im not sure. the wiper arms and where the hook up is in good shape but underneath maybe??? the motor is brand new.

its the hidden setup.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-21-2007, 08:20 PM
Bryan59EC's Avatar
Car? Truck? Who Cares
 

Last journal entry: First week of December
Last photo:
Join Date: Jun 2006
Location: San Antonio, Texas
Age: 54
Posts: 2,331
Wiki Edits: 0

Thanks: 1
Thanked 14 Times in 12 Posts
Sounds to me like a screwed up set of contacts in the wiper motor. (edit: stuck in 'park')

When the wipers are switched off, there is a set of contacts that maintain a path to ground while the wipers 'park'

This sets off another reaction that actually "parks" the wipers. Actually it kinda activates a cam.

Pretty much all of these motors work the same, the hide-aways most likely just use a different cam to park them.

If it is a 'new' motor, it is most likely a rebuilt motor that has set on the shelf for quite some time and the contacts have some 'crap' on 'em.

Same thing happened to me. the vendor I bought the motor from had it shipped from the rebuilder. Wish I could remember his name. He kinda explained to me what was actually going on. He even walked me thru the fixing to get me going 'til he could get another out to me.
He sent me a new motor on the 'honor system'. He just asked me to return the first unit upon delivery of the replacement.

When I get home I will see if I still have his number somewhere.

Bryan
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-21-2007, 10:07 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
i think i have narrowed it down to it being the switch. when i turn off it does the same thing when i turn it to low speed its on high and when i turn it to high it slows way down. i think it might be the switch.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-22-2007, 08:20 PM
Bryan59EC's Avatar
Car? Truck? Who Cares
 

Last journal entry: First week of December
Last photo:
Join Date: Jun 2006
Location: San Antonio, Texas
Age: 54
Posts: 2,331
Wiki Edits: 0

Thanks: 1
Thanked 14 Times in 12 Posts
All connections to the wiper switch are a ground of some sort.

The power feed is direct to the motor from the fusebox (key on)

Try disconnecting the wires from the switch and ground them individually.

One should be 'low'-------one should be 'hi' ----and one may be 'wash'

Bryan
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-24-2007, 01:30 PM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,519
Wiki Edits: 1

Thanks: 6
Thanked 146 Times in 133 Posts
The GM wiper motor uses a shunt winding wound in the opposite direction to both provide slow speed and park. When the contacts in the motor go bad, you get the pulsing motion you've described. It's happened to several of my cars and always required a new wiper motor to fix it.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-24-2007, 08:57 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
the motor is new and i connected all the wires but not the wiper arms and it works spins in a circle no odd noise. i connect the arms and it pluses the arms. the motor still spins all the way around but the arms pulse .

also when i turn the motor off by the switch the motor stays on.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 09-25-2007, 11:49 AM
Registered User
 
Last wiki edit: Wheelbase database Last photo:
Join Date: Jan 2007
Location: Virginia
Posts: 3,519
Wiki Edits: 1

Thanks: 6
Thanked 146 Times in 133 Posts
Quote:
Originally Posted by elcaminodragster
the motor is new and i connected all the wires but not the wiper arms and it works spins in a circle no odd noise. i connect the arms and it pluses the arms. the motor still spins all the way around but the arms pulse .

also when i turn the motor off by the switch the motor stays on.
Did you replace the ground strap? The GM wiper motor is isolated in rubber bushings and there's a separate ground strap that goes around one of the bushings.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 09-25-2007, 12:27 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
yes the ground strap is good.
Reply With Quote Quick reply to this message

Recent General Rodding Tech posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Compressor and piping all working finally Danny G. Garage - Tools 3 06-21-2006 09:12 PM
#1 Cooling Fan Not Working Properly?? Willy1 Electrical 4 05-05-2006 03:51 PM
Oh how I miss working in the garage.... FrankR Hotrodders' Lounge 9 03-01-2006 11:40 AM
"Basic of Basics" How do you properly apply filler? Centerline Body - Exterior 2 02-10-2006 12:22 AM
Speedometer not working??? Mightymouse Body - Exterior 2 06-24-2004 04:41 AM


All times are GMT -6. The time now is 09:04 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.