Heater Help
Thread Starter
Melting Slicks
Joined: Jun 2007
Posts: 3,251
Likes: 0
From: SF Bay Area California
Heater Help
Hey Everyone,
My heater seems to not be working right. The other day I needed it for the first time since purchasing it in spring, but to my dismay no heat was coming out. The motor is blowing, and I dont have any antifreeze smell or sense of moisture on the passenger side. Checking the hoses going into the fire wall, they are both hot, but still no heat. The electronic climate control module is flipping out on me, could this be the reason for the lack of heat? Any and all help is greatly appreciated.
My heater seems to not be working right. The other day I needed it for the first time since purchasing it in spring, but to my dismay no heat was coming out. The motor is blowing, and I dont have any antifreeze smell or sense of moisture on the passenger side. Checking the hoses going into the fire wall, they are both hot, but still no heat. The electronic climate control module is flipping out on me, could this be the reason for the lack of heat? Any and all help is greatly appreciated.
Team Owner
Joined: Jan 2003
Posts: 20,290
Likes: 239
From: Summerland B.C. Canada
Sounds like the temp door is not opening. There has been a few good threads lately, on this problem. A quick search should keep you reading for a while. Here's some info from my 86, just ignore the vacuum controlled water valve, I don't think the 89 has it.
http://members.shaw.ca/dankai/AC%20Electronic.pdf
http://members.shaw.ca/dankai/AC%20Electronic.pdf
Team Owner
Joined: Jan 2003
Posts: 20,290
Likes: 239
From: Summerland B.C. Canada
Your going to have to diagnose the problem. Could be the clip on rod, motor, controller etc.
Lots of info in this thread. http://forums.corvetteforum.com/show...highlight=heat
Lots of info in this thread. http://forums.corvetteforum.com/show...highlight=heat
Thread Starter
Melting Slicks
Joined: Jun 2007
Posts: 3,251
Likes: 0
From: SF Bay Area California
Thanks everyone for the help. Next weekend I will start taking stuff apart to see whats the matter. Hopefully that rubber seal is just hanging up the heater temperature door.
Racer
Joined: Feb 2006
Posts: 399
Likes: 31
From: Clinton TN
Don't just assume it's the temp door. On my 93 I was able to remove a small cover on the firewall side and watch it open. I too thought that if both heat hoses were hot the core was not plugged. That turned out to be an incorrect assumption. I was able to flush the heater core with a water hose attached to one of the hoses going through the firewall and had the other hose spilling into a bucket. Lots of junk came out and the heater was salvaged. This may or may not be your problem. As stated before, there are lots of threads on this. Good luck.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski