1995 Ford Explorer Climate controls not working/ no heat

Tiny
VWORSHAM
  • MEMBER
  • 1995 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I had problems in the summer with the climate control blowing cold air but when it was on auto and cycled off, it started blowing hot air. I took it to a couple of places, one a dealer and they replaced the ac compressor. Max AC had always worked so this did not fix the problem. Didn't realize it at the time but it must have affected the heat too because the heat does not work at all. No matter what I set the temp on it's blowing cold air. Defrost won't work either. Any ideas?
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Thursday, January 7th, 2010 AT 1:48 PM

3 Replies

Tiny
MERLIN2021
  • EXPERT
Do this self test and post the codes that come up, my money at least for the cool air problem is the temp blend door, but do this and post result:
EATC SELF-DIAGNOSTIC TEST Entering Self-Diagnostics & Retrieving Codes 1. Warm engine until coolant is at least 120 F (49 C). Turn ignition switch to RUN position. Simultaneously press OFF and FLOOR buttons, then press AUTOMATIC button within 2 seconds. Wait at least 30 second for the self-test to run (during this time, the display will be blank). 2. If display is blank for more than 30 seconds, or if Code 888 is displayed, go to EATC SYSTEM TEST. If codes are displayed, record code numbers. Repair codes in the order they are displayed. See SELF-DIAGNOSTIC CODE TABLE.
Clearing Codes While in self-diagnostic mode, press DEF button. Exiting Self-Diagnostics Press BLUE button.
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Friday, January 8th, 2010 AT 3:40 PM
Tiny
VWORSHAM
  • MEMBER
I did the test and it came up with 888. I don't know how to enter the EATC System Test so that's as far as I got. How do I get into that. Also how do I get into the Code Table? Thanks!
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Friday, January 8th, 2010 AT 4:20 PM
Tiny
MERLIN2021
  • EXPERT
Check your email.I sent a PDF with all info on Auto temp control, 888 I think means no problems found, and the test you did is the EATC test! Try just looking at the engine cooling system, Heater Core " Plugged

WARNING: The heater core inlet hose will become too hot to handle if the system is working correctly.

Check to see that the engine coolant is at the correct level.
Start the engine and turn on the heater.
When the engine coolant reaches operating temperature, feel the heater core inlet and outlet hose to see if they are hot.
If the inlet hose is not hot:

the thermostat is not working correctly.
If the outlet hose is not hot:

the heater core may have an air pocket.
The heater core may be restricted or plugged.
If both are hot, the temperature blend door in the heater plenum may be broken or stuck.
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Friday, January 8th, 2010 AT 5:54 PM

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