New water pump... problem
Thread Starter
Safety Car
Joined: Jun 2005
Posts: 3,841
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From: Inver Grove Minnesota
New water pump... problem
I got a new pump from the local autoparts store, it is the stock replacement for my car. I get everything installed and it is not cooling the motor down. Before I changed the pump I didn't have any cooling problems, it was just leaking out of the front of the pump. Could this just be air in the system?
Advanced
Joined: Oct 2006
Posts: 93
Likes: 0
From: Hershey PA.
I got a new pump from the local autoparts store, it is the stock replacement for my car. I get everything installed and it is not cooling the motor down. Before I changed the pump I didn't have any cooling problems, it was just leaking out of the front of the pump. Could this just be air in the system?
Instructor
Joined: Jul 2006
Posts: 112
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From: vt
try taking your thermostat housing off, pull out the stat, and fill the motor with coolant that way. it should ensure that you get coolant into the pump (if that was your problem). replace the thermostat, housing, hoses, and try it again.
Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
I got a new pump from the local autoparts store, it is the stock replacement for my car. I get everything installed and it is not cooling the motor down. Before I changed the pump I didn't have any cooling problems, it was just leaking out of the front of the pump. Could this just be air in the system?
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
I agree that it's probably air in the system.. If that is not the problem, you could do what I did.. I got myself a Pro Comp aluminum high flow water pump (35% more flow) for about $45... In combination with my Griffin Radiator, my temerature hasn't gone above 190 degrees, even on a hot and humid Florida day in stop and go traffic...
The way that I get air out of the system is to take the pressure cap off the radiator and let the car run for a minute or 2.. If there is air in the system, you'll see the fluid level in the radiator drop.. Top it up until it doesn't drop anymore..
The way that I get air out of the system is to take the pressure cap off the radiator and let the car run for a minute or 2.. If there is air in the system, you'll see the fluid level in the radiator drop.. Top it up until it doesn't drop anymore..
Last edited by GrandSportC3; Jun 8, 2007 at 12:21 PM.
Pro
Joined: Sep 2004
Posts: 595
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From: Boston MA
I agree that it's probably air in the system.. If that is not the problem, you could do what I did.. I got myself a Pro Comp aluminum high flow water pump (35% more flow) for about $45... In combination with my Griffin Radiator, my temerature hasn't gone above 190 degrees, even on a hot and humid Florida day in stop and go traffic...
The way that I get air out of the system is to take the pressure cap off the radiator and let the car run for a minute or 2.. If there is air in the system, you'll see the fluid level in the radiator drop.. Top it up until it doesn't drop anymore..
The way that I get air out of the system is to take the pressure cap off the radiator and let the car run for a minute or 2.. If there is air in the system, you'll see the fluid level in the radiator drop.. Top it up until it doesn't drop anymore..
air in the system.
Take the cap off, let in run until the thermostat opens. you will see the flowing coolant. then fill if needed. Runnning with cap off will not do any damage.
Thanks,
Joe
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Or pull the plug in the top of the pump and fill the pump.Dont do it through the cap and wait for the air to exit,if the pump is full of air and the thermostat holds tight it wont come out before it over heats.If you want to fill through the cap and not trap air then drill a 1/64 hole in the therm. so it will bleed through and not trap air.
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Thread Starter
Safety Car
Joined: Jun 2005
Posts: 3,841
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From: Inver Grove Minnesota
I pulled the cap when it was cool and air rushed out. I loosened the plug off the pump and coolant started coming out. So maybe I have air in the block. I'm going to pull the tstat and fill it and drill a hole in it too.
Drifting
Joined: Apr 2002
Posts: 1,716
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From: New Baden Illinois
Once you fill it that way, seal it back up, and fill it at the radiator. Let the car run until the thermostat opens. You should see the coolant level drop some. Top it off, and close it up.
Thread Starter
Safety Car
Joined: Jun 2005
Posts: 3,841
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From: Inver Grove Minnesota
Ok, I replaced the tstat instead just to be sure it was opening. I ran it with the cap off the radiator. I kept filling it as it went down. I put it all back together and it still gets hot. I've had the coolant drained so many times and never had a problem like this before. Is there a way to check to see if my pump is pumping the coolant well?
Team Owner
Joined: Aug 2000
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From: Massillon,Ohio USA
2020 C3 of the Year Finalist - Unmodified
Cruise-In VI Veteran
St. Jude Donor '08-'09-'10-'11-'12
...had a friend replace his water pump from one of those Pep Boys/AutoZone/Advance type auto parts store too and his car didn't cool either. He took the pump apart and found the impeller was spinning freely on the shaft. One more reason why I replace these type parts with brand new A/C Delco parts. Yeah, it might be $80 to $120, but it'll be identical to your original one and fit and perform like it's supposed to.
Drifting
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From: New Baden Illinois
Pro
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From: London