wind shield washer pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

williars · 03-30-2004, 07:25 PM

This site is excellent. I'm glad I found it. I have a question I hope one of you can answer. My 83 Chevy: When I push the wiper button to wash my windshield. The darn thing keeps pumping until it empties the resevoir. Is it a simple fix? or do I need a new pump?

apstguy · 03-30-2004, 09:07 PM

Probably the switch. I don't know if the dash switch ones have a module, but if they do replace that.

NeCrOmAnCeR · 03-31-2004, 12:02 AM

There is also a cam mechanism on the wiper motor under the black plastic cover. When you hit the switch it energizes a solenoid which pulls the pump lever off the stop, allowing it to pump. When you release the switch the cam mech should push the lever back onto the stop. I tried in vain to fix mine many times, but I ended up replacing the mechanism. Yours may just need to be cleaned and lubricated, it's worth a look.

dwjack · 03-31-2004, 12:12 AM

I've been fighting this same thing with my truck for some time. If you pull the black cover off of the motor on the firewall there is a white plastic wheel that rotates 360 degrees. If it doesn't go all the way around it won't stop pumping. The teeth on mine are slightly stripped and sometimes it won't catch the last tooth to make it stop. As for getting a new gear I found that you can't order one from the dealer, discontinued. Maybe at a junkyard or Pep Boys said a new moter was about $45.00 which I assume would include all the gears but I haven't ordered it yet so I don't know for sure. Good luck.

screwballl · 03-31-2004, 12:19 AM

i have a similar problem except my washer fluid pump doesnt work at all, never has in the year ive had the truck. im sure all i have to do is replace the tiny motor

williars · 03-31-2004, 09:39 AM

Thank you for your responses. I will take a closer look at the pump, and its moving parts. - Ryan

03-30-2004, 07:25 PM	#1
williars Registered User Join Date: Mar 2004 Location: Waldorf, Maryland Posts: 23	wind shield washer pump This site is excellent. I'm glad I found it. I have a question I hope one of you can answer. My 83 Chevy: When I push the wiper button to wash my windshield. The darn thing keeps pumping until it empties the resevoir. Is it a simple fix? or do I need a new pump? __________________ Ryan 69 Camaro 396 Yenko Clone 71 Cheyenne SWB 402 69 C-10 Stepside 454 4speed 83 Scottsdale Stepside 350/Auto 99 Mustang GT In the works: 67 Chevy II Nostalgia Straight Axle Blown 427

03-30-2004, 09:07 PM	#2
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	Probably the switch. I don't know if the dash switch ones have a module, but if they do replace that. __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

03-31-2004, 12:12 AM	#4
dwjack Registered User Join Date: Sep 2003 Location: Alaska Posts: 35	I've been fighting this same thing with my truck for some time. If you pull the black cover off of the motor on the firewall there is a white plastic wheel that rotates 360 degrees. If it doesn't go all the way around it won't stop pumping. The teeth on mine are slightly stripped and sometimes it won't catch the last tooth to make it stop. As for getting a new gear I found that you can't order one from the dealer, discontinued. Maybe at a junkyard or Pep Boys said a new moter was about $45.00 which I assume would include all the gears but I haven't ordered it yet so I don't know for sure. Good luck. __________________ 1984 Silverado C10 GM Goodwrench 350 Edelbrock Intake/Carb Hedman Hedders 700R4 Transmission 12 Bolt out of an 81 275/60/15 Centerlines

03-31-2004, 12:19 AM	#5
screwballl Tonawanda 454 Join Date: Mar 2004 Location: Liquid Sunshine State Posts: 2,754	i have a similar problem except my washer fluid pump doesnt work at all, never has in the year ive had the truck. im sure all i have to do is replace the tiny motor __________________ 91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!! 04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011) In the past 30 years about 90% of Fords are still on the road, the other 10% made it home. -------------------

03-31-2004, 09:39 AM	#6
williars Registered User Join Date: Mar 2004 Location: Waldorf, Maryland Posts: 23	Thank you for your responses. I will take a closer look at the pump, and its moving parts. - Ryan __________________ Ryan 69 Camaro 396 Yenko Clone 71 Cheyenne SWB 402 69 C-10 Stepside 454 4speed 83 Scottsdale Stepside 350/Auto 99 Mustang GT In the works: 67 Chevy II Nostalgia Straight Axle Blown 427

03-31-2004, 12:02 AM	#3
NeCrOmAnCeR Registered User Join Date: Feb 2004 Location: Hodgenville, Ky Posts: 735	There is also a cam mechanism on the wiper motor under the black plastic cover. When you hit the switch it energizes a solenoid which pulls the pump lever off the stop, allowing it to pump. When you release the switch the cam mech should push the lever back onto the stop. I tried in vain to fix mine many times, but I ended up replacing the mechanism. Yours may just need to be cleaned and lubricated, it's worth a look.

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