How to check the heater control valve on 1994 mercury villager. no heat

providing there is suffecent coolant, you probably have either a bad heater control valve or a blocked heater core. Is the problem present w/ def. activated? If not then the blend dooray be the problem.

http://groups.yahoo.com/group/villagerquest/

http://groups.yahoo.com/group/villagerquest/

you need to solder 4 pins in control head in front.

go here for pics and process. I fix for $25 plus postage

Off the heater hoses that connect to the heater core on back of motor by firewall.

you have air trapped in system. If you could hang van like a deer in a tee, you could get the air out. Go to a sho with evac/fill equipment and have them purge the air. You are about 3 qts short of full

go here too. read cooling system files.

http://groups.yahoo.com/group/villagerquest/

faulty water pump & or semi plugged up heater core can cause this problem

Try disconnecting the battery for 2 hours. Then drive for 10 miles so the PCM can relearn. It may run rough for 10 miles.

If not ok, go to Villager website for expert team help free. Check files, ask questions

http://groups.yahoo.com/group/villagerquest/

Check operation of the heater core coolant control valve and associated remote control mechanism.

yes it sounds to me like the thermostat control on the dash is malfuctioning. either that or heater control valve under the dash that converts the flow of air around or through the heater core could be stuck in heater mode. hope this helps. i dont know your financial situation but if it was me i would aquire one from a salvage yard in order to test because that part is quiet expensive from the dealer

hi, i think your heater motor is faulty this is a common problem on mercs, hope this helps