2000 LS A/C Problem

Could not find a thread with this problem, so let me know if anyone has an idea. The passenger side dash A/C vents are blowing warmer air than the the driver's side. Considerably warmer air. The passenger side temp is set at the same as the drivers side. HELP! No engine codes are showing. Driver's side is ice cold.

Could not find a thread with this problem, so let me know if anyone has an idea. The passenger side dash A/C vents are blowing warmer air than the the driver's side. Considerably warmer air. The passenger side temp is set at the same as the drivers side. HELP! No engine codes are showing. Driver's side is ice cold.

Common issue in older LSes. The blender valve gets stuck - and one side ends up at a completely different temp than the other.

Most of us have had it happen once or twice - usually letting the car sit overnight - the problem goes away.

If it keeps returning - the blender vavle may need to be replaced. Not a small job - since most of the dash has to come out....

This has happened to me while my LS was under warranty and the dealer fixed the problem under TSB 03-3-4. Below is an excerpt from that TSB.

A/C - Lack of Cooling From Driver/Passenger Vents
Article No.
03-3-4

02/17/03

CLIMATE CONTROL - LACK OF COOLING FROM
DRIVER AND/OR PASSENGER SIDE VENT -
VEHICLES EQUIPPED WITH DUAL AUTOMATIC
TEMPERATURE CONTROL (DATC) ONLY

FORD:
2002 THUNDERBIRD

LINCOLN:
2000-2002 LS

Article 00-15-3 is being republished in its entirety to update the models covered and to update the Basic Causal Part number.

ISSUE

Some vehicles may exhibit a lack of A/C cooling from either the driver or passenger side vents or an extreme temperature difference between the driver and passenger side on vehicles with DATC (Dual Automatic Temperature Control): This may be caused by a faulty DCCV (Dual Coolant Control Valve), a faulty DATC control assembly, or faulty electrical circuits.

ACTION

Inspect and service as necessary, electrical circuits, DCCV and DATC control assembly. Refer to the following Service Procedure to aid in diagnosis and repair.





Parts Block

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 00-15-3

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

030304A Diagnosis (Includes Time 0.5 Hr.
To Perform All Diagnosis
Mentioned In This Article
Can Be Claimed With Or
Without Part Replacement)
3.0L/3.9L Engine

030304B Additional Time To 1.7 Hrs.
Replace Dual Coolant
Control Valve - 3.0L
Engine

030304B Additional Time To 2.0 Hrs.
Replace Dual Coolant
Control Valve - 3.9L
Engine

030304C Additional Time To 0.6 Hr.
Replace Dual Automatic
Temperature Control
Assembly: 3.0L/3.9L
Engine

030304D Additional Time To Repair 0.4 Hr.
Wire - 3.0L/3.9L Engine

DEALER CODING
CONDITION
BASIC PART NO. CODE
18495 42

OASIS CODES: 208000, 208200, 208999

This has happened to me while my LS was under warranty and the dealer fixed the problem under TSB 03-3-4. Below is an excerpt from that TSB.

A/C - Lack of Cooling From Driver/Passenger Vents
Article No.
03-3-4

02/17/03

CLIMATE CONTROL - LACK OF COOLING FROM
DRIVER AND/OR PASSENGER SIDE VENT -
VEHICLES EQUIPPED WITH DUAL AUTOMATIC
TEMPERATURE CONTROL (DATC) ONLY

FORD:
2002 THUNDERBIRD

LINCOLN:
2000-2002 LS

Article 00-15-3 is being republished in its entirety to update the models covered and to update the Basic Causal Part number.

ISSUE

Some vehicles may exhibit a lack of A/C cooling from either the driver or passenger side vents or an extreme temperature difference between the driver and passenger side on vehicles with DATC (Dual Automatic Temperature Control): This may be caused by a faulty DCCV (Dual Coolant Control Valve), a faulty DATC control assembly, or faulty electrical circuits.

ACTION

Inspect and service as necessary, electrical circuits, DCCV and DATC control assembly. Refer to the following Service Procedure to aid in diagnosis and repair.





Parts Block

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 00-15-3

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

030304A Diagnosis (Includes Time 0.5 Hr.
To Perform All Diagnosis
Mentioned In This Article
Can Be Claimed With Or
Without Part Replacement)
3.0L/3.9L Engine

030304B Additional Time To 1.7 Hrs.
Replace Dual Coolant
Control Valve - 3.0L
Engine

030304B Additional Time To 2.0 Hrs.
Replace Dual Coolant
Control Valve - 3.9L
Engine

030304C Additional Time To 0.6 Hr.
Replace Dual Automatic
Temperature Control
Assembly: 3.0L/3.9L
Engine

030304D Additional Time To Repair 0.4 Hr.
Wire - 3.0L/3.9L Engine

DEALER CODING
CONDITION
BASIC PART NO. CODE
18495 42

OASIS CODES: 208000, 208200, 208999


Thanks guys, you are the greatest! I will contact the Lincoln dealer...

Common issue in older LSes. The blender valve gets stuck - and one side ends up at a completely different temp than the other.

Most of us have had it happen once or twice - usually letting the car sit overnight - the problem goes away.

If it keeps returning - the blender vavle may need to be replaced. Not a small job - since most of the dash has to come out....

I have a 2000Ls V8, with this problem. What part of the dash do I need to take apart to get at this valve? I get super hot air on the right side and what feels like a mix of cool and hot on the left.
Thanks for any information.