94 intrepid Heater power probs

Intermittently my heater and blower come on at full blast and I lose
all control even the digital display goes out like there is no control
power.Then somtimes it starts
working normal again makes no differnce if kill the ignition and start
back up problems stays.Then sometimes goes away .I was thinking
possible short or relay.

 

This sounds like a problem that was reported many times in the early
days of LH cars. The problem was caused by defective solder joints on
the digital control. A poster explained the procedure to remove the
panel, and then touch up the solder joints. It may located on
allpar.com, otherwise I will see if I still have it.

-KM