Question about 1998 Cadillac DeVille
You can reset the computer by disconnecting the positive cable on your battery for 5mins. only be sure that your radio does not have to be recoded afterwards. refer to owners manual. resetting your computer will reset all codes even if your check engine light is on,,but depending what's wrong it will not repair everything! i hope this helps!
Posted on Aug 25, 2010
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Posted on Jan 02, 2017
Hi,check if the compressor clutch is engaging,if not check the conection at the compressor if ok check,fuse ,or relay ,if those are fine and the commpressor is engaging,check freon presure ,may be too high or low, if this is the case ,correct the problem and disconect the negative cable from the battery for a minute to reprogram the sistem..C1
Posted on Jan 04, 2009
Sounds like you have a problem with the pressure switches on the ac system. Find the aluminum lines for the ac, attached to the lines are two pressure switches plugged in to the car wiring harness. Make sure the sensors are tight into the fittings on the lines. If they are unplug them one at a time and bridge the two terminals in the plug going to the car's harness not the switch, with a jumper wire or cotter pin which ever wire turns on the ac compressor remove that switch and take it in to the auto parts store and get another one.
hope this helps you out
Posted on Jan 07, 2009
I have a 1999 Cadillic Deville. The low Frefrigerant indicater come on after about 15 minutes of disconnecting the battery power. Each Time I reset the power the air conditioner comes back on for a while then goes out. I have taken it into the local auto repair place and they find no problem with the unit.
Could this be a intermittent connection to the computer. They have replaced both sencors and the problem persists. Where is the computer located on the car that handles this AC sensor message?
Posted on Jul 14, 2010
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