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#726781 - August 13th 2017 2:50 pm water pump  
Joined: Dec 2000
Posts: 3,661
Astro Offline

Astro  Offline

Joined: Dec 2000
Posts: 3,661
Dresden, Maine
ok., I need to change the water pump on my astro.

I see some pumps listed as high volume? is this helpful? or just a gimmick?
does it hurt to use one or should I stay with a normal volume one?

anything I should watch out for?
anything else I should do while I am at it?

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#726786 - August 13th 2017 7:46 pm Re: water pump [Re: Astro]  
Joined: Jan 2001
Posts: 1,858
Meanmachine Offline
Meanmachine  Offline

Joined: Jan 2001
Posts: 1,858
Kellettville, PA
Anytime I change a water pump, I replace the thermostat, radiator hoses, and drive belts. Youtube is a great reference for videos on how-to disassemble and assembly.

#726819 - August 14th 2017 9:12 pm Re: water pump [Re: Astro]  
Joined: Nov 2013
Posts: 796
Wedgy Offline
old hand
Wedgy  Offline
old hand

Joined: Nov 2013
Posts: 796
West Texas
And while you're in there, check the tensioner, pulley, and idler pulley on the serpentine belt rotating system.
Some say to R&R the tensioner anyway.

I've also seen 3 A/C clutch bearing failures. Two on the Dodge smallblocks @ around 150000 miles. The 1990 454 @ 79000 miles. Old age and the red dirt that blows down here from Vanada...

Edelbrock sure thinks their water pumps are slick. IDK personally, but I'll bet that they're shiny!

Good Wrenching Astro

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