EATC Problems

[SAT1158]

I’ve been having some strange things happening with the EATC (95 Mark VIII). Start the car, and heat center comes on. Although, as soon as I touch the gas pedal,even just barely, the blower and display go out. The longer the car runs the longer I get before the unit shuts down. It also seems, the warmer the outside temp is, the longer it will stay running.

It appears when running the rear defogger, or when the window is going up or down, it back feeds power to the EATC and brings it up and running....but over time it will pop out again. Battery is new and alternator is about 3yrs old.

Any ideas?

 

[driller]

RE: EATC Problems

Check all your fuses and run an On-Board Diagnostic Test on the EATC.

From the manual:

On-Board Diagnostic Test

NOTE:
The in-vehicle temperature should be greater than 50°F (10°C) for all DTCs shown to be valid.

l The control assembly will detect electrical concerns occurring during the On-Board Diagnostic.

l Ensure that the engine is warm, at least 120°F coolant temperature.

l To display the DTCs, initiate the On-Board Diagnostic by pushing OFF and FLOOR simultaneously and then AUTOMATIC within two seconds. The test may run as long as 20 seconds, during which time the display will be blank. If the display is blank for more than 20 seconds, go to System «Diagnosis When On-Board Diagnostic Indicates No Error Found.»

l The On-Board Diagnostic Test can be initiated at anytime with the resulting DTCs being displayed. Normal operation of the system stops when On-Board Diagnostic is activated. To exit the On-Board Diagnostic and restart the system, push the BLUE button. The On-Board Diagnostic should be deactivated before powering the system down. Refer to the Diagnostic Trouble Code Key for an explanation of DTCs.

What's the code?