Topaz L4-140 2.3L HSC (1984)
Radiator Cooling Fan Control Module: All Technical Service Bulletins
Engine - Surge/Hardstarting/Hesitation On Driveaway
Article No. 85-8-10
HARD STARTING - AFTER HOT SOAK - 2.3L HSC
SURGE ON DRIVEAWAY - AFTER HOT SOAK - 2.3L HSC
HESITATION ON DRIVEAWAY AFTER HOT SOAK - 2.3L HSC
FORD 1984 TEMPO
LINCOLN-MERCURY 1984 TOPAZ
Hard starting, surge on driveaway or hesitation on driveaway (all after a hot soak) may be caused by high underhood temperatures after engine shutdown.
These concerns may be corrected by reworking the cooling fan system to allow the fan to continue to run for a while with the key off to reduce
underhood temperatures during hot soak.
If a customer is experiencing the above concern, only during high ambient temperatures, the following procedures may correct this concern.
To create a fan after run condition (i.e. cooling fan runs with key off) (refer to the 1984 Car Shop Manual Volum "E" pages 27-10-9, 27-10-10 and
27-10-23 for circuit diagrams). Perform the following rework:
Figure 6 - DUTY CYCLE SOLENOID (MOUNTED ON ENGINE BULKHEAD)
1.
Before reviewing the cooling fan control, check the feedback solenoid vacuum tee for blockage (See Figure 6). If any blockage is evident the tee
should be replaced. This should correct the drive concern. If there is no blockage in the tee, proceed with the fan control rewiring.
2.
Disconnect the negative battery cable.
3.
Locate the cooling fan control module (cars with A/C) or the cooling fan motor relay (cars without A/C), which are mounted on the right hand
cowl panel behind the dash board. Access can be gained through the glove box door opening.
4.
VEHICILES WITH A/C - 50 STATES 50 States with ATX
1.
Remove fan controller from vehicle by prying up the locking tab on bracket and pulling down on controller. Disconnect the connector.
2.
Remove bracket from new fan controller and install controller on existing bracket mounted in vehicle. Install connector.
50 States with MTX
1.
Remove fan controller from vehicle by prying up the locking tab on bracket and pulling down on controller. Disconnect the connector.
2.
Remove bracket from new fan controller and install controller on existing bracket mounted in vehicle.
