Climate Control - Heat Issue

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Nov 17, 2015 | 09:16 AM

ajd3rd

Thread Starter

Instructor

Joined: Feb 2004

Posts: 126

Likes: 3

From: Bloomingburg NY

Climate Control - Heat Issue

I've searched the forum but can't seem to find an answer. 96 Corvette heat works fine at start but gradually gets cooler the longer I drive. On the drive to work this morning about 30 degrees outside I set the temperature to 75. Warm heat was coming out over the driver's feet. After about 45 minutes it starts to feel cool. I then need to bump up the temperature to about 80 and it's warm again. I've noticed that I have to keep increasing the temperature to keep the car warm the longer I drive.

Any ideas?

Thanks,

Andy

Nov 17, 2015 | 09:23 AM

antfarmer2

Race Director

Joined: Mar 2015

Posts: 15,926

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might be your blend door or evan a air leak under the hood in your air box or heater core pluging up. or maybe dirty temp sensor.

look on youtube to see how to have the climate control tell you by self testing

Last edited by antfarmer2; Nov 17, 2015 at 09:33 AM.

Nov 17, 2015 | 11:59 PM

Cliff Harris

Race Director

Joined: Apr 2002

Posts: 10,036

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From: Anaheim CA

Here's a link to a YouTube video that shows how to do the C68 diagnostics:

Nov 26, 2015 | 12:45 PM

pcolt94

Le Mans Master

Joined: Jan 2006

Posts: 5,621

Likes: 206

From: Orlando FL

Quote:

Originally Posted by ajd3rd

I've seen this question before in other threads. You are not alone for many including I have the same effect. I usually get to the 85 degree mark and all I get is lukewarm heated air. Then you got to go to 90 and the heat comes on full blast which is usually too hot.

I just think the control circuits and micro processor don’t function that well after time. Don’t know why, never chassed that problem. Not much heat need in Orlando, A/C on about 12 months a year.

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