Overheating

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Dec 24, 2007 | 09:53 PM

IceDazzlr

Thread Starter

Intermediate

Joined: Dec 2007

Posts: 37

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From: Valinda California

Overheating

I recently bought my first vette and I love it. However, my 1994 Vette is having some overheating issue when I'm sitting in traffic. Temperatures will reach 225 to 230 and goes back down to 190 to 200 when I'm moving again. I noticed that the secondary fan is not operating and I'm not sure if it's a bad fan or a bad sensor. The fuse looks good and the wiring seems to e connected. Has anyone else experienced this problem or have a recommendation to fix the problem? Email me please. IceDazzlr@yahoo.com

Dec 24, 2007 | 10:10 PM

arizonaames269

Racer

Joined: Nov 2007

Posts: 300

Likes: 1

From: Prescott Michigan

That is pretty normal. I run mine about once a week in the garage and the temps go to 225, the fan kicks on and then drops to 200. It then repeats. You probably have factory 190 thermostat the same as me. Someone else with more experience will come along and explain how to lower the temp if you wish.....jim

Dec 24, 2007 | 11:14 PM

jrzvette

Safety Car

Joined: Sep 2002

Posts: 4,971

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From: The reason time exists is so everything doesn't happen at once

Without the ac running the primary fan should come on at 226 and the secondary fan should kick in at 235. With ac on both fans come on regardless of temp. Your car seems normal.

Dec 24, 2007 | 11:17 PM

RollaMo-LT4

Race Director

Joined: Oct 2005

Posts: 11,771

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From: Rolla Missouri

2021 C4 of the Year - Unmodified Finalist

St. Jude Donor '10 thru '25

According to GM, it's not overheating at those temps.

No need to worry unless the temp. continues to climb past the 240 mark.

Dec 25, 2007 | 01:43 AM

85 500 horse

Melting Slicks

Joined: Dec 2004

Posts: 2,954

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From: Obama=death for America

It really helps us if you could fill out your profile. Knowing what year, model, engine, etc. helps us to determine your problem. So when you get a chance, take a few minutes and fill it out.

GM purposely designed these cars to run on the warm side as it helps with emissions. Temps in the 230's is normal, even though it may seem high. You shouldn't see 240 or above, so if you do, then you have a problem. And your secondary probably isn't coming on because your car just may be around that fringe area where it's about to come on, but it's not quite hot enough.

If you want to test it, put your car in the sun, wait for a hot day and let it idle. Watch the temps. If it gets to the upper 230's w/o the secondary kicking in, then there's a problem. Here in Florida, every day is a hot day.

Also, shine a flashlight down into the lower radiator area. This is a known "crap" collection site. If too much crud accumulates here, your temps will definitely needlessly climb. If you do have garbage here and if you clean it all out, it's guaranteed that your temps will drop some.

Dec 25, 2007 | 01:52 AM

hexane

Melting Slicks

Joined: May 2007

Posts: 2,382

Likes: 2

From: Kathleen FL

230 degrees is nothing. I've stepped into a dry sauna hotter than that before! But is was also 40 degrees outside as well!

Dec 25, 2007 | 10:06 AM

pettvette

Safety Car

Joined: Oct 2003

Posts: 3,597

Likes: 101

From: TN PA

CI 5-6-7-8-9-10-11 Vet

While your temps are in the normal range, I would suggest you clean the air intake area in front of the a/c condenser and the the area between the radiator and the condenser.

You will be surprised on what you may find in there!

Dec 28, 2007 | 09:22 AM

89 Bob L

Burning Brakes

Joined: Dec 2000

Posts: 1,161

Likes: 0

From: Orangeburg, NY

jrzvette and pettvette are right on the money. The operating temperatures are normal. CLeaning the air intake and surrounding areas will definitely help.