Question about 1998 Lincoln Mark VIII
I have 1998 MarkVIII Lincoln and my heater control switch doesn't work. It is a dail syled switch that goes from low to high level. I have had the fan motor tested and it is good. I wonder if the resitor in bad.
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Posted on Jan 02, 2017
SOURCE: 1997 lincoln towncar
not neccessarly true there could be several reasons for the a/c clutch not to ingage. 1 the clutch relay is bad(it is located in the junction box under the hood,switch it with the heater relay if it kicks on the relay was bad) 2 the system is under charged(the binary switch will sense this and keep the compressor off) 3 a blown fuse fore the climate control(the fuse is located in the panel under the dash on the drivers side) there is a blockage in the system(this will cause the high side pressure to rise to a point where the high pressure switch cuts the circuit. My suggestion is to first check that the wire going to the a/c clutch is not coroded or broken. then check the relay, then have the system recharged provided that there are no leaks. if the guages when hooked up initially show that the low side pressure is 35 psi and the high side is 130-150 psi then you know it was an electrical problem. if those are not the pressure it could be a blockage (most likely in the drier) or the expansion valve is bad( this regulateds the system. hope these options are of help to you good luck and please rate this thanks
Posted on Sep 06, 2008
SOURCE: climate controls
Car manufacturers use the defrost mode as a default for safety reasons. Being they want you to be able to defrost the windshield no matter what. So when something goes wrong the system automatically goes to the defrost mode. You most likely don't have the vacuum hose connected under the dash at the climate control assy. Or if this vehicle doesn't use the vacuum hose style you may have not plugged in one of the connectors under the dash or behind the climate control assy. Good luck.
Posted on May 21, 2009
I'm assuming the problem is the blower motor isn't coming on or working. 1st, check the fuse. 2nd, remove the glove box or pull the 2 tabs that act like stops when it's open ( the glove box will open out further) and you'll see the power plug connector for the blower unit. Turn on the blower through the climate control (heat, A/C, or whatever) and wiggle the connector to see if the blower turns on. If starts working, then an easy solution is pull the connector off and gently press the prongs together or inward. Then carefully reconnect with damaging the prongs. This worked for 96 Mark VIII due to the fact the prongs were not "seating" correctly in the female connector. It's been about 2 years since I did this and the connection is still good. If wiggling the plug doesn't work, pull the plug, turn on the climate control (heat, A/C), and check for voltage to the plug. That's about all I can help with.
Posted on May 28, 2009
sounds like your switch contacts are shorted closed.. try disconnecting the switch for inspection and use a volt ohm meter to inspect switch across contacts...
Posted on Sep 11, 2009
Testimonial: "At first the blower stop working. When I ran a separate ground directly to the fan motor it worked but then I found out I had no control. "
Check the blower motor speed controller which is located in the engine compartment just below where the heater hoses enter the firewall
Posted on Oct 12, 2009
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