help!!!!! a/c is not working!!!!!!
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,476
Likes: 0
From: NYC / Naples, FL C5 under construction! Arancio Atlas (Lamborghini Metallic Orange) comming soon! :)
help!!!!! a/c is not working!!!!!!
I changed my thermostat and went to test car out and the light on the a/c didnt come on nor the cold air from the vents. Its a 1998 manual a/c not auto dual. Many thanks in advance!
Melting Slicks
Joined: Aug 2001
Posts: 3,050
Likes: 124
From: Wichita KS
Any Diagnostic Trouble Codes set?
https://www.corvetteforum.com/techti...D=26&TopicID=1
You might also recheck your work are to see if an electrical connector might have been inadvertently disconnected.
https://www.corvetteforum.com/techti...D=26&TopicID=1
You might also recheck your work are to see if an electrical connector might have been inadvertently disconnected.
Last edited by mapman; Jul 10, 2004 at 09:00 AM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Check the codes 
Also check the AC Compressor drive belt. It has it's own belt and they can break and you will not even know it until your AC quits! 
That AC compressor is a little tough to get to!
BC
Also check the AC Compressor drive belt. It has it's own belt and they can break and you will not even know it until your AC quits! That AC compressor is a little tough to get to!
BC
Le Mans Master
Joined: Nov 2002
Posts: 7,179
Likes: 2
From: Charlotte, NC
Originally Posted by DudeWheresMyVette
I changed my thermostat and went to test car out and the light on the a/c didnt come on nor the cold air from the vents. Its a 1998 manual a/c not auto dual. Many thanks in advance!
-Rick
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,476
Likes: 0
From: NYC / Naples, FL C5 under construction! Arancio Atlas (Lamborghini Metallic Orange) comming soon! :)
Sorry I should have mentioned that I checked all fuses for HVAC and airconditioning. It was working alright a week before I replaced the thermostat. Think it's possible that the spilled DexCool affected the compressor? I will check codes in a lil bit and look them up etc. I'll also check the belt because I have heard a squeak recently. When I try to turn the A/C on IO dont -think- I hear the comprerssor working but then again I'm no tech. I'm just trying to avoid dealer if possible because I live 17 miles from the nearest one 
Thanks all
Thanks all
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Even without a belt attached, when you have someone select the AC mode or Defrost mode the clutch on the AC compressor should engauge (CLICK). I also believe the engine idle should be effected a little.
That would let you know that you have functioning power to the compressor clutch. If you are low on freon the suction pressure switch will keep the clutch from turning the compressor.
Check the belt!
BC
That would let you know that you have functioning power to the compressor clutch. If you are low on freon the suction pressure switch will keep the clutch from turning the compressor.
Check the belt!
BC
Safety Car
Joined: Sep 2001
Posts: 4,411
Likes: 1
From: Wilmington NC
Originally Posted by VetteTech81
True a thermostat can effect heat because (I know this is obvious) it regulates coolant temp, but not the a/c. I am assuming that the climate controls power up the blower blows.. and like you said the a/c light will not turn on.. And the system was working before the thermostat? I would check for codes and check the fuses.. thats where I would start the diagnosis.. maybe some more people will chime in with more info for you..
-Rick
-Rick
What does the external temperature say on the AC display?
If you got coolant on the sensor which is in the radiator shroud the sensor could think it is winter and the AC won't come on.
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Drifting
Joined: May 2000
Posts: 1,917
Likes: 3
From: Southern NH
Originally Posted by Bill Curlee
EXCELLENT!! Very good thinking!!
Very good thinking!!
You guys don't read, do you. It's a MANUAL UNIT, not DUAL ZONE so NO DISPLAY.
My guess would be maybe one of your vacuum lines got disconnected if the compressor belt is still in place.
P.S. sorry for the rant.
Last edited by JC in XTC5; Jul 11, 2004 at 12:57 PM.
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,476
Likes: 0
From: NYC / Naples, FL C5 under construction! Arancio Atlas (Lamborghini Metallic Orange) comming soon! :)
sorry about the delay in checking codes I've been extremely busy with my son's birthday. Can someone tell me where this belt is, or have a picture? What about the thing on the radiator? Thanks again, sorry for being useless lol.
