Air cond.
Thread Starter
8th Gear
Joined: Mar 2014
Posts: 8
Likes: 0
From: TAMPA FLA.
Air cond.
OK, I have a 2000 vett. The A/C is blowing cold and warm air out of the driver side vents. The pass. side is fine, it's blowing cold air. Does any one have an idea. Hope some one can help. THANK YOU
Drifting
Joined: Jun 2013
Posts: 1,965
Likes: 343
From: Shell Point (Crawfordville) Florida
When you say the driver side is blowing cold and warm air, what do you mean? It can't do both at the same time. Do you mean that the air coming out of the driver's side vent is not as cold as the passenger side air? That could mean you are low on freon and the system needs to be recharged.
Have you pulled any codes from the DIC?
Have you pulled any codes from the DIC?
Thread Starter
8th Gear
Joined: Mar 2014
Posts: 8
Likes: 0
From: TAMPA FLA.
Air cond.
When you say the driver side is blowing cold and warm air, what do you mean? It can't do both at the same time. Do you mean that the air coming out of the driver's side vent is not as cold as the passenger side air? That could mean you are low on freon and the system needs to be recharged.
Have you pulled any codes from the DIC?
Have you pulled any codes from the DIC?
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
If you pulled the codes using the dic and did not get any hvac codes for the actuators then the problem is a low charge. You must use the dic as scanners will not pick up these codes. This problem commonly reported in the C5 and a proper recharge usually fixes the issue. You may have a slow leak and that will be repaired.
Thread Starter
8th Gear
Joined: Mar 2014
Posts: 8
Likes: 0
From: TAMPA FLA.
If you pulled the codes using the dic and did not get any hvac codes for the actuators then the problem is a low charge. You must use the dic as scanners will not pick up these codes. This problem commonly reported in the C5 and a proper recharge usually fixes the issue. You may have a slow leak and that will be repaired.
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
The air temperature that comes out of the vents is controlled by an ELECTRIC CONTROLLER! One for the passengers side and one for the drivers side:
If the controller is NOT FUNCTIONING PROPERLY, the temp out of the vent/s will be wrong.
The electric controller moves a FLAP inside the air box that either covers the heater coil output of the AC coil (evaporator) output) or somewhere in the middle for warm air.
OR
If the Freon Level is LOW, it can ALSO cause one side to be warmer than the other.
Is the compressor clutch CYCLING ON & OFF when you have the AC ON?? It should NOT be!
BC
If the controller is NOT FUNCTIONING PROPERLY, the temp out of the vent/s will be wrong.
The electric controller moves a FLAP inside the air box that either covers the heater coil output of the AC coil (evaporator) output) or somewhere in the middle for warm air.
OR
If the Freon Level is LOW, it can ALSO cause one side to be warmer than the other.
Is the compressor clutch CYCLING ON & OFF when you have the AC ON?? It should NOT be!
BC
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Thread Starter
8th Gear
Joined: Mar 2014
Posts: 8
Likes: 0
From: TAMPA FLA.
Air cond
The air temperature that comes out of the vents is controlled by an ELECTRIC CONTROLLER! One for the passengers side and one for the drivers side:
If the controller is NOT FUNCTIONING PROPERLY, the temp out of the vent/s will be wrong.
The electric controller moves a FLAP inside the air box that either covers the heater coil output of the AC coil (evaporator) output) or somewhere in the middle for warm air.
OR
If the Freon Level is LOW, it can ALSO cause one side to be warmer than the other.
Is the compressor clutch CYCLING ON & OFF when you have the AC ON?? It should NOT be!
BC
If the controller is NOT FUNCTIONING PROPERLY, the temp out of the vent/s will be wrong.
The electric controller moves a FLAP inside the air box that either covers the heater coil output of the AC coil (evaporator) output) or somewhere in the middle for warm air.
OR
If the Freon Level is LOW, it can ALSO cause one side to be warmer than the other.
Is the compressor clutch CYCLING ON & OFF when you have the AC ON?? It should NOT be!
BC
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
1. Check the R-134 Charge
2. Read and Post the DTCs If its an actuator, it should pop a DTC
Thread Starter
8th Gear
Joined: Mar 2014
Posts: 8
Likes: 0
From: TAMPA FLA.
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
If you have codes for the actuators one or both will need to be replaced. The codes will indicate which one, likely driver side given your description of the problem. Due to the design of the C5 evaporator it is very common for the passenger side to be cold and still have a low charge. The passenger side will be cold until the charge get low enough to start cycling the compressor off.