Over heat with A/C off.
Thread Starter
Racer
Joined: Feb 2015
Posts: 265
Likes: 19
From: Tampa FL
Over heat with A/C off.
First day with the Vette. So found out last night the hard way that my radiator fan doesn't run when the A/C is off. I was sitting in traffic and saw my temp gauge just below 260. So I turned on my A/C as I know most cars with A/C will activate the electric fan. After a few minutes it was back down to 195. So is this the norm? Is there no temp sensor to activate the fan at 200+ degrees when the A/C is off? If there is, where's it at on the motor so I can swap it out?
Thanks!
Thanks!
Race Director
Joined: Mar 2015
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Likes: 579
First day with the Vette. So found out last night the hard way that my radiator fan doesn't run when the A/C is off. I was sitting in traffic and saw my temp gauge just below 260. So I turned on my A/C as I know most cars with A/C will activate the electric fan. After a few minutes it was back down to 195. So is this the norm? Is there no temp sensor to activate the fan at 200+ degrees when the A/C is off? If there is, where's it at on the motor so I can swap it out?
Thanks!
Thanks!
Thread Starter
Racer
Joined: Feb 2015
Posts: 265
Likes: 19
From: Tampa FL
Mines a 94. I only see 1 fan. It seems like it might have a high and low speed. I'll run it with the ac off and see if it kicks on around 238. I did see the 2 large grey relays on the side today.
Thread Starter
Racer
Joined: Feb 2015
Posts: 265
Likes: 19
From: Tampa FL
No clogs between the coolers. It stays below 220 with the ac on. Only have the issue with the ac off.
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Race Director
Joined: Oct 2005
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From: Rolla Missouri
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It does not have a linear scale either, so it is next to impossible to tell what the temp being displayed is.
Take a close look at the upper end of the scale, and you'll notice a "shaded" area just before 260.
As long as your gauge needle isn't into that shaded area you are not overheating.
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Melting Slicks
Joined: May 2013
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From: Sacramento California
Press the gauges button to display the coolant temperature on your LCD dash display. This is within a couple degrees of actual engine temperature.
Do a search and you will find that the LT1 was designed to run at higher temperatures than the average gas engine. My opinion: it's ok anywhere under 230F. But usually I turn on the AC when the digital gauge hits 220F. I just did a cooling flush too, so everything's working great. It's not as hard as it seems, even the knock sensors weren't that tough to get out.
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