Question about 1994 Cadillac DeVille
Fuse, relay and low side pressure switch new
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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
The pressure they work within is usualy information on your radiator cap or owners hand book.Your thermostat should be a 180 degree but can vary The 180 is in reference to the heat required to open them so water can flow through and be kept at a more or less constant 180.There are other temp ranges for a wide variety of applications and 180 is the standard one for most vehiclesThe radiaor and water system is pressurised to lower the boiling point of the water The higher the pressure the lower the boiling point
Posted on Feb 15, 2009
SOURCE: replace my fuel pump relay
The fewl pump relay is located in the bottom part of the fuse box under the hood. It is labeled on the cover where it is. It is one of the big black square s usually taped to the one above it. Cost is about fifteen bucks at advance auto.
Posted on Feb 22, 2009
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