2 Water Pumps in 1 month?

[97C1500TJ]

I’ve gotten fed up with replacing water pumps on my 95’s 305. Apparently this thing goes through them more than gas. I’ve put on an Advance Auto pump on and then finally a NAPA two weeks ago. They both are leaking from the back side on that cover plate NOT where it bolts to the block. Any ideas what’s up or is it just a reman issue?

 

[someotherguy]

More junk reman parts I would say. I had OK luck with a few Napa pumps over a decade ago but like anything else, quality seems to have taken a dive. Small sample size to be sure but after one of them went bad I got it warrantied out and the warranty pump was bad right out of the box (bearing no good.) Went down to Carquest (right before Advance bought them out) and got one from them instead. Casting appeared slightly different so at least I felt better that it came from a different plant in China, ya know?

Richard

 

[PlayingWithTBI]

They both are leaking from the back side on that cover plate NOT where it bolts to the block. Any ideas what’s up or is it just a reman issue?

Did you check the rear plate mounting bolts for tightness before installing the pump? I've had them come out of the box loose before.

 

[someotherguy]

Did you check the rear plate mounting bolts for tightness before installing the pump? I've had them come out of the box loose before.

That's some amazingly bad QC then!! Wow. Yeah I'd check them from now on if there's historical evidence. That's a thin cover so I'd go with "snug" as a torque value about as much as you'd put on a thin stamped steel valve cover bolt. Too tight will deform the cover and gasket.

Richard

 

[JOHNGAAA1]

First you should buy a brand new acdelco pump Second, replace the clutch fan at the same time. Put in a heavy duty unit, hayes or other good aftermarket is fine. You will hear it slightly, but you will be happy and will not have to do the job again. I have been there and that was my problem.

 

[someotherguy]

First you should buy a brand new acdelco pump Second, replace the clutch fan at the same time. Put in a heavy duty unit, hayes or other good aftermarket is fine. You will hear it slightly, but you will be happy and will not have to do the job again. I have been there and that was my problem.

Years ago I would agree with you on the AC Delco pump. These days all the new pumps are Chinese garbage, you just pay for the name and warranty. In my case the NAPA pumps were brand new, not remans. The warranty got me another bad pump brand new in the box. The Carquest pump was new, too.

Richard

 

[Caman96]

Or look for a NOS Acdelco 251-579. I installed one last summer while also installing a new duel core radiator. They can still be had.

1996 - 2008 General Motors NOS Water Pump GM # 12532528 - Oldsmobile Obsolete

This new old stock water pump was manufactured by General Motors for use on the following models: Cadillac 1999 – 2000 Escalade. Chevrolet 1996 – 2008 Application Unknown See Parts Books. Chevrolet and GMC Pickup 1996 – 2008 CKG-15-25-35, Sierra, Suburban,Van, Blazer, Jimmy, Safari, Yukon...

www.oldsobsolete.com

Edit: Just noticed yours is a 95

 

[HotWheelsBurban]

But a quality brand, that's not something that you can skimp on, on a Chevy V8. Also check the tightness of those 6 bolts on the back plate. I've seen them be loose on pumps before too.

 

[Caman96]

I didn’t think to check that but I guess if they weren’t it’d be leaking by now!

 

[Dropped88]

Like mentioned already cant trust brands of any parts. Can look on the box of any of them. Its all made in china now.

I work in a shop this stuff is almost daily, its multiple brand cars and multiple brand parts and its all the same QC issues