Galant LS V6-3.0L SOHC (1999)
Control Module HVAC: Customer Interest
A/C - Improving Poor Initial Cool Down Performance
NO.: TSB-99-55-004
DATE: August, 1999
MODEL: 1999 Galant
SUBJECT:
INSUFFICIENT A/C COOL-DOWN PERFORMANCE
PURPOSE
This bulletin contains procedures for improving the initial cool-down performance of the air conditioner on certain early production 1999 Galant
vehicles.
BACKGROUND INFORMATION
Symptom/Condition
Some customers may complain that the passenger compartment does not cool down to a comfortable temperature during high ambient temperatures. This
condition may occur even if the air emitted from the ducts seems somewhat cool.
Cause
Insufficient cool-down can be caused by the condenser cooling fan duty cycle.
Remedy
This bulletin contains field fix procedures to increase the duty cycle of the condenser cooling fan and improve cooling efficiency and cool-down
performance. If a customer complaint is received for the symptom listed above, please recommend the use of the "inside air (recirculation) position" to
the customer. If this does not improve the condition, proceed with the following steps.
AFFECTED VEHICLES
1999 Galant built prior to 1/11/99 (up to VIN: - XE089900)
PROCEDURES
Performance Temperature Chart
1.
Conduct the performance test as instructed on page 55-20 of the 1999 Galant Service Manual, Volume 3. Please disregard the performance
temperature chart on this service manual page, as it is incorrect. Please refer to the updated chart above or the information in the TSB-99-55-003
service manual revision.
NOTE:
During the test, the air control must be in the "inside air (recirculation) position" with the windows closed. Set the blower fan switch on "4 " (fast).
The engine speed should be set at 1500 r/min.
2.
If the performance test is out of specification, perform the normal A/C troubleshooting steps to repair the vehicle. If the test is normal, proceed
with step 3.
