Last post on Nov 16, 2013 at 11:56 AM
You are in the Ford Crown Victoria/Mercury Grand Marquis
What is this discussion about?
Ford Crown Victoria, Mercury Grand Marquis, Heating / Cooling, Sedan
#107 of 192 1999 Merc Grand Marquis Climate Control
Jun 08, 2011 (5:32 pm)
I own 1999 Mercury Grand Marquis while traveling down the highway our Climate Control Unit totally quit working, you can get anything, at about the same time I noticed that I did not have and turn signals. We have checked all of the different fuses, all tested good. My Wife told me that the front the the climate control unit on the dash seemed to be warmer then the rest of the dash. Sue need some help.... I also own a 1997 Mercury Grand Marquis, can I exchange the units to see if the system will work or do you think it could short out this unit. Help Please.
#108 of 192 Re: AC PROBLEM [lfalls3048]
Jun 09, 2011 (10:06 am)
Im new to edmunds site, my name is jack. i researched problem with EATC AC controll unit that would only blow air from the defrost vents and the remedy was to replace four .007 silicon "O" rings located on the accuator inside the controll module. Pull trim off by hand starting as passenger door. 4 screw hold unit in place. disconect 2 electric connections and vaccum lines then take unit to table and remove two star screws on back, lift up. That unit contains the four silinoids bend tabs at end and pull out accuator shaft, carefully not to lose the spring. Put new seals on. Reassemble. I just fixed mine for $8.00. The silicon "O" rings seem to work the best according to research.
#109 of 192 Re: Climate controls issues on Ford family vehicles [ginolena]
Jul 06, 2011 (3:52 pm)
How do I contact you to get a EATC Module. I have a 2006 Grand Marquis with 35,000 miles and it just started switching the air to the defroster vent as I accelerate or go up a hill.
#110 of 192 Re: '08 Grand Marquis ac control module, ac comming out of defrost [shadetree9]
Jul 06, 2011 (3:56 pm)
Where are the two wiring harnesses located that have to be disconnected for a cold boot.
#111 of 192 Re: AC PROBLEM [snorkelbobby]
Jul 07, 2011 (8:27 am)
Could I get a copy of the the pictures to hold vacuum harness up.
#112 of 192 Re: Climate controls issues on Ford family vehicles [cheapwayout]
Jul 10, 2011 (9:25 pm)
contact me at sbcglobal.net
#113 of 192 Re: EATC Blows only through defroster, just fixed...:( [joeveto]
Jul 12, 2011 (4:23 pm)
I have an 07 grand marquis, same problem, but now it is blowing hot too. Checked the door actuator and it has small amount of vacum. I have just over 90,000 miles when door stopped moving . Now 102,000 and its blowing heat to on 90degree days. I found a dealer on ebay who rebuilds your eatc for 79.00
and free shipping. Money is tight right now, was wondering if Bigmercs fix would work for me too.
#114 of 192 Re: EATC Blows only through defroster, just fixed...:( [chaindrive]
Jul 12, 2011 (4:38 pm)
Hi joveto, simple fix,but only temp, i used a pair of needle nosed vise grips and clamped off the heater hose going into the heater core, no more 9000 degree heat into the car,I plan to put an inline shutoff valve in the hose in order to not have to rip the dash out to fix, my 98 has 200,000 miles on it and runs great
#115 of 192 EATC head unit for 2007 Grand Marquis
Jul 16, 2011 (3:21 pm)
Where can I get a picture or diagram of the EATC head units working mechanisms. I would like to try to repair the O-ring failure as mentioned in post #108. Several requests for pictures have been made in this forum, but I cannot find any responses to those requests showing pictures, etc.