Running HOT
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
Likes: 88
From: Springfield PA
Philly 'Burbs Events Coordinator
Running HOT
My coupe was running hot like 210 on the highway. Yesterday I took the radiator out and cleaned it and installed a thermostat. Took it for a nice run today and on the highway it would run at 196 - 200 if I ran 5th gear and then as high as 207 in 6th gear. Because of the temp differences based on RPM now I'm thinking water pump. What do you think?
[Modified by Rex Ruby, 6:41 PM 7/15/2002]
[Modified by Rex Ruby, 6:41 PM 7/15/2002]
Le Mans Master
Joined: Mar 2000
Posts: 7,805
Likes: 0
From: If you read this, you'll go blind
Re: Running HOT (Rex Ruby)
Late C4's are notorious for running hot. If the weather is hot, it's probably about normal. Once mine gets hot, it pretty much stays warm, even on the highway like you say.
Le Mans Master
Joined: Jul 2000
Posts: 7,836
Likes: 1
From: Global Warming My Butt
Re: Running HOT (STL94LT1)
When I took my car in for a new water pump to GM, they cleaned and replaced everything...and the car runs 10 degrees cooler!
New pump = running hotter...possibly the pully isn't the same size?
New pump = running hotter...possibly the pully isn't the same size?
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
Likes: 88
From: Springfield PA
Philly 'Burbs Events Coordinator
Re: Running HOT (Rex Ruby)
Thanks for the input!
Maybe I should have added it usually ran at about 195 on the highway
My coupe was running hot like 210 on the highway.
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Le Mans Master
Joined: Jul 2000
Posts: 7,836
Likes: 1
From: Global Warming My Butt
Re: Running HOT (STL94LT1)
New pump = running hotter...possibly the pully isn't the same size?
There is no pulley on the LT1 waterpump.
There is no pulley on the LT1 waterpump.
My apartment complex probably wouldn't appreciate it.
Elite Torch Red Member
Joined: Sep 1999
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
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Re: Running HOT (Rex Ruby)
Thanks for the input!
My coupe was running hot like 210 on the highway.
Maybe I should have added it usually ran at about 195 on the highway
My coupe was running hot like 210 on the highway.
Maybe I should have added it usually ran at about 195 on the highway
Drifting
Joined: Aug 2001
Posts: 1,550
Likes: 27
From: Minneapolis MN
Re: Running HOT (MinnesotaWhite)
When I took my car in for a new water pump to GM, they cleaned and replaced everything...and the car runs 10 degrees cooler!
Just curious as to where you took your car? Village Chev? I think that'd be the only dealer I would trust.
Le Mans Master
Joined: Jul 2000
Posts: 7,836
Likes: 1
From: Global Warming My Butt
Re: Running HOT (FlyboyZR1)
When I took my car in for a new water pump to GM, they cleaned and replaced everything...and the car runs 10 degrees cooler!
MinnesotaWhite,
Just curious as to where you took your car? Village Chev? I think that'd be the only dealer I would trust.
MinnesotaWhite,
Just curious as to where you took your car? Village Chev? I think that'd be the only dealer I would trust.
We are sooo lucky in Twin Cities to have Bruce! Plus, GM Major Guard warranty helps too :D
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Re: Running HOT (Rex Ruby)
Mine runs hotter, even on the highway on these 85-95 degree days. But from what you are saying, yours used to run cooler then it does now? It could be that you are not getting good heat transfer out of the radiator, even though you cleaned it. If it was mine, I would drain down some of the anti-freeze and put in a bottle of water-wetter, then top off with distilled water and give that a try. If that dosnt help, then I would have the radiator checked out by a radiator shop or replace it. Good luck and let us know what it turns out to be.
