0
First unplug the power from the fan located on the firewall on the passenger side. Use a jumper wire from the battery to the fan contacts. If it runs fine then your three speed control module ( it is a circuit board approx 4 inches by 2 inches ) is the problem. It is a known problem and the new one purchased has a different part number from the original and incorporates a fix for the problem.
This electronic module is located inside the air ducting fastened to the firewall. The board is just below the heater hose inlets going through the firewall. It is held on by two small hex head screws and is very difficult to get to, but can be done with patience and care. The heater hoses ( both inlet and outlet have to be removed along with some other parts in the way. It took me approx. 3/4 hour to change it and replace the lost coolant.
Sorry I don't have the part number but it costs $72.00 retail and $40.00 wholesale at the Ford dealer. For a dealer to diagnose and change I was quoted $380.00.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
2002 Mercury Grand Marquis fan stopped working?
2004 mercury grand marquis fan stop working
Where is the climate control located in a 1999 Grand Marquis?
In the center of the dash. It's the unit you select options on. It controls the AC and Heat.
Troubleshoot headlamps on 1988 grand marquis?
troubleshoot head lamps on 1988 grand marquis? Not working...fuses OK
Why will the blower motor not blow on a 2000 grand marquis when ive already replaced the resister climate control head and the fan is good?
Fuse is blown.
You have no heat in your 1994 mercury grand marquis?
i have no heat in my 1994 mercury grand marquis. what could cause the heat to stop working
Why has the Cruise control on 2000 grand marquis stopped working?
The most common cause for a cruise control that stops working is that the electrical components or switches have stopped working. Sometimes taking it apart and cleaning the contacts will fix the problem.?æ
Electronic ac module on 2003 grand marquis?
where is the ignition control module located on mercury marquis
What do you do if the climate control does not work in a 1997 Mercury Grand Marquis?
I suspect that your Control Unit itself has gone bad. That's what happened to me. A new control unit will cost between $400 and $500. I got one from a Junk Dealer for $100. It's been working for 3 years now. The control is real easy to change out. Hope this helps.
Where is the heater control valve on 1998 mercury grand marquis?
where is the heater control valve
You have two 1988 grand marquis one is an ls and one is a gs with an ls package. the ls has the automatic climate control and you was wondering if you could just swap the climate control units in the?
Yes - IF and ONLY if both Cars have Automatic Climate Control. The computer settings are different (Or are 'supposed' to be) - You can always try - if it works great, if not, at least you know.
Turn signal on 1995 Mercury grand marquis not working?
Replace the flasher relay if none of them are working.
What does the traction control solenoid looks like on a 2002 mercury grand marquis?
i have a 2002 grand marquis and when i driving on the highway at speed of 60 to 70 the light of traction control star to flash way is the problem
