A/C - Compressor Shuts OFF in High Temperatures
TSB 07-24-712/10/07
A/C COMPRESSOR SHUTOFF - HIGH AMBIENT TEMPERATURES - VEHICLE STATIONARY IN GEAR
FORD:
2007-2008 F-150, F-150
LINCOLN:
2007-2008 Mark LT
ISSUE
Some 2007-2008 Mark LT and F-150 vehicles equipped with 5.4L or 4.6L engine only, may exhibit a loss of A/C compressor operation in ambient temperatures greater than 110 °F (43 °C), when the vehicle is stationary for periods longer than 15 minutes, with the transmission in gear. Idling in gear and extreme ambient temperatures may cause the vehicle control systems to disable A/C compressor operation.
ACTION
Follow the Service Procedure steps to replace the A/C compressor pulley and coolant pump pulley.
SERVICE PROCEDURE
NOTE
THIS TSB IS INTENDED TO RESTORE A/C COMPRESSOR OPERATION IN EXTREME HIGH AMBIENT TEMPERATURES WHEN THE TRANSMISSION IS PLACED IN THE PARK POSITION. DO NOT ATTEMPT TO ADDRESS CUSTOMER CONCERNS OF GENERAL A/C TEMPERATURE OUTPUT PERFORMANCE WITH THIS TSB. THIS TSB WILL NOT IMPROVE A/C SYSTEM DUCT TEMPERATURE OUTPUT PERFORMANCE.
NOTE
DURING EXTREME HIGH AMBIENT TEMPERATURES WHEN IDLING STATIONARY FOR EXTENDED PERIODS OF TIME IN GEAR, IT IS RECOMMENDED TO OPERATE THE A/C IN THE MAX POSITION, REDUCE BLOWER FAN SPEED FROM THE HIGHEST SETTING, AND PUT THE TRANSMISSION INTO THE PARK POSITION TO CONTINUE TO RECEIVE COOL AIR FROM THE A/C SYSTEM.
1. Replace the A/C compressor pulley. Follow Workshop Manual (WSM), Section 412-01 for removal and installation details.
2. Replace the coolant pump pulley. Follow WSM, Section 303-03 for removal and installation details.
3. Drain approximately 1 quart of coolant from the cooling system into a clean container which will permit reuse of coolant in the vehicle. Refer to WSM, Section 303-03.
4. Replace the clamp on the heater core feed hose, near the right hand front of engine, at the water pump outlet pipe connection point.
5. Refill the cooling system.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
072407A 2007-2008 F-150 4X2, 1.7 Hrs.
5.4L and 4.6L Engines,
2007-2008 Mark LT 4X2.
Replace A/C Compressor
Pulley, Coolant Pump
Pulley and Heater Feed
Hose Clamp at Coolant
Pump Outlet. Includes
lime Remove and Install
A/C Compressor and to
Drain and Fill Cooling
system.(Do Not Use With
19700A, 19700A4,
8509A,8620F, 8616A,
18472A).
072407B 2007-2008 F-150 4X4, 1.9 Hrs.
5.4L and 4.6L Engines,
2007-2008 Mark LT 4X4.
Replace A/C Compressor
Pulley, Coolant Pump
Pulley and Heater Feed
Hose Clamp at Coolant
Pump Outlet. Includes
lime Remove and Install
A/C Compressor and to
Drain and Fill Cooling
system.(Do Not Use With
19700A, 19700A4,
8509A,8620F, 8616A,
18472A).
DEALER CODING
CONDITION
BASIC PART NO. CODE
8A616 42
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