I've forwarded this to the fellow who owns the car, and will see what he
replies. Thank you for the kindness, and consideration.
Christopher A. Young
Learn more about Jesus
Personally, i doubt there is any problem with the switch - and if it
has shut down on the safety (from cycling it too often) I believe
there is a reset procedure. Not sure on Ford, but on Navistar Trucks,
to reset the A/C you use the cruise control buttons on the steering
With the truck not running, the key in the ON position, transmission
in park, parking brake set, and left turn signal on. Using the cruise
control buttons, at the same time push the left button up and the
right one down to pull the codes on the dash. To RESET all codes and
start the A/C again push both cruise control buttons UP.
This should reset the A/C if the check A/C light is on.
Like I said, not sure about Ford - and it will likely differ from year
to year and model to model .
On a '99 Crown Vic with automatic temperature control, the following
procedure is required:
Electronic Automatic Temperature Control Module Self-Test
The EATC module self-test will not detect concerns associated with
data link messages like engine coolant temperature or vehicle speed
signals. A NGS tester must be used to retrieve these concerns.
The EATC module self-test will detect concerns in the system control
functions and will display hard diagnostic trouble codes (DTCs) in
addition to intermittent diagnostic trouble codes for concerns that
occur during system operation. The vehicle interior temperature should
be between 4°-32°C (40-90°F) when carrying out the self-test. If
temperatures are not within the specified ranges, false in-car
temperature sensor DTCs will be displayed.
The self-test can be initiated at any time. Normal operation of the
system stops when the self-test is activated.
To enter the self-test, press the OFF and FLOOR buttons simultaneously
and then press the AUTOMATIC button within two seconds. The display
will show a pulse tracer going around the center of the display
window. The test may run as long as 30 seconds. Record all DTCs
If any DTCs appear during the self-test, follow the diagnostics
procedure given under ACTION for each DTC given.
If a condition exists but no DTCs appear during the self-test, refer
to the Symptom Chart Condition: The EATC System Is Inoperative,
Intermittent or Improper Operation.
To exit self-test and retain all intermittent DTCs, push the blue
(cooler) button. The control will exit self-test, retain all
intermittent diagnostic trouble codes and then turn OFF (display
To exit the self-test and clear all DTCs, press the DEFROST button.
The vacuum fluorescent display window will show 888 and all function
symbols for one second. Then, the EATC control assembly will turn OFF
(display blank) and all DTCs will be cleared.
Always exit the self-test before powering the system down (system
Intermittent DTCs will be deleted after 80 ignition switch ON cycles
after the intermittent condition occurs.
That ought to keep Stormy occupied for a while!!!