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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Stewart G Griffin on September 30, 2016, 08:45:44 PM

Title: Wipers moving very slow---sometimes.
Post by: Stewart G Griffin on September 30, 2016, 08:45:44 PM: What would cause the wipers to move slow, then normal for a while, then slow again etc.

i don't know if it's related but sometimes my dash lights are pretty dim, then sometimes they are bright etc. (if the two are not related, then what would cause this separate problem?)

i think my battery is good.
Title: Re: Wipers moving very slow---sometimes.
Post by: bd on September 30, 2016, 09:39:21 PM: Check, clean, tighten all the cab grounds. Lube the wiper transmission.
Title: Re: Wipers moving very slow---sometimes.
Post by: fitz on October 01, 2016, 01:04:44 PM: Stewart, you had a post awhile back asking for pictures on how to remove the cowl. If you haven't removed yours yet, now is a great time to do it and lube all the wiper linkage like BD said.
After reading your post, i did that to my M1028. I also put in a rebuilt wiper motor, because mine only worked on the slow speed (about $60 at O'Reilley auto parts).
Everything works great now, high & low speed and the windshield washer does too. $60 and a few hours will spent.
Title: Re: Wipers moving very slow---sometimes.
Post by: Stewart G Griffin on October 01, 2016, 05:19:48 PM: Quote from: fitz on October 01, 2016, 01:04:44 PM
Stewart, you had a post awhile back asking for pictures on how to remove the cowl. If you haven't removed yours yet, now is a great time to do it and lube all the wiper linkage like BD said.
After reading your post, i did that to my M1028. I also put in a rebuilt wiper motor, because mine only worked on the slow speed (about $60 at O'Reilley auto parts).
Everything works great now, high & low speed and the windshield washer does too. $60 and a few hours will spent.

Will do. It may be time for a new motor.

On a related note, Subaru is recalling about 600,000 cars----due to a faulty wiper motor that could catch fire. i mean wiper motors have been around for about 100 years and they still can't get it right? Newer and more complex is not necessarily better!
Title: Re: Wipers moving very slow---sometimes.
Post by: Stewart G Griffin on October 10, 2016, 11:34:37 PM: What should i use for lube?
Title: Re: Wipers moving very slow---sometimes.
Post by: bd on October 11, 2016, 08:59:13 AM: GM #89021668 Multi-Purpose Grease, GM #12346241 Super Lube synthetic grease, Loctite 36786 ViperLube spray (http://www.loctite.ph/php/content_data/LT3711_ViperLube_Synthetic_Lubricant_Brochure.pdf) or similar penetrating aerosol products
Title: Re: Wipers moving very slow---sometimes.
Post by: philo_beddoe on October 27, 2016, 09:18:33 PM: Similar question, why do my wipers stop instantly as soon as i turn the switch to off,,,and not completing the final cycle---sometimes?
Title: Re: Wipers moving very slow---sometimes.
Post by: bd on October 28, 2016, 12:17:09 AM: Faulty wiper motor park switch.
Title: Re: Wipers moving very slow---sometimes.
Post by: philo_beddoe on October 28, 2016, 03:56:51 PM: Ok, e-z fix. Thanks