Windshield Washer pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**MJN** · 06-11-2010, 07:55 AM

Anyone know where to get a decent one of the old cam driven style pumps? The pump I got from LMC on my '74 loses prime, pumps randomly when the wipers are on but nothing sprays out of the nozzles and sounds terrible.

Thanks

westofb · 06-11-2010, 02:55 PM

I had the same issues, I put a small amount of Vaseline in the "piston" bore and so far it has been working great.... well, it is still a little loud, but it works!

**MJN** · 06-17-2010, 11:28 PM

I'll have to take mine off, when you turn on the wipers the pump randomly tries to pump and sounds terrible even without pushing in the wiper switch for washer fluid. I'm not sure if the cam inside is messed up or not. It never worked right from day one either.

**78 Big10 454** · 06-17-2010, 11:55 PM

I bought a GM unit for my 78 at the local dealer. Piece of junk. Bought a unit from J.C. Whitney and it still works like a charm.

06-11-2010, 07:55 AM	#1
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,051	Windshield Washer pump Anyone know where to get a decent one of the old cam driven style pumps? The pump I got from LMC on my '74 loses prime, pumps randomly when the wipers are on but nothing sprays out of the nozzles and sounds terrible. Thanks __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com

06-11-2010, 02:55 PM	#2
westofb I really hate wet sanding! Join Date: Dec 2008 Location: Brookfield, MO Posts: 601	Re: Windshield Washer pump I had the same issues, I put a small amount of Vaseline in the "piston" bore and so far it has been working great.... well, it is still a little loud, but it works! __________________ Jeff, 68 C-10 75 C-20, now a C-10! 10 F-150

06-17-2010, 11:28 PM	#3
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,051	Re: Windshield Washer pump I'll have to take mine off, when you turn on the wipers the pump randomly tries to pump and sounds terrible even without pushing in the wiper switch for washer fluid. I'm not sure if the cam inside is messed up or not. It never worked right from day one either. __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com

06-17-2010, 11:55 PM	#4
78 Big10 454 78 Big10 454 Join Date: Jul 2008 Location: Pismo Beach, CA Posts: 839	Re: Windshield Washer pump I bought a GM unit for my 78 at the local dealer. Piece of junk. Bought a unit from J.C. Whitney and it still works like a charm.

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