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
#62 of 192 Re: 2004 Grand Marquis Stuck on Defrost [dudat]
Jun 26, 2010 (1:34 pm)
I own a 2003 Crown Vic, the heater control went out about 2 years ago, it just went out again. When they go out all heat and air conditioning go to the defroster. Ford tells me this a safety feature. So when it quits you will always has a defroster, the heat and air are only a comfort issue. Nice huh. They are $650.00 and are on back order by 1069 until July 2010, at which time there is supposed to be more than two thousand available. Which tells me they should be put on a recall. When the guy replaced mine 2 years ago he told me they were very poorly designed. To compact area, so over heats and burns out. I'm still looking for the part. The last time I bought the part at a salvage yard for $150.00 and paid $100 to have it installed.
#63 of 192 Re: Climate Control Fan, Lights and Control [mergramar2001]
Jun 26, 2010 (2:16 pm)
my 2003 Crown Vic did the same thing for a couple of months before the heater control went out. now it only blows through the defroster. This the second time my has quit and both times it blew out floor, vent, or defroster and would speed up and then slow down. It didn't matter what it was set on.
#64 of 192 Re: 2004 Grand Marquis Stuck on Defrost [dudat]
Jun 26, 2010 (2:26 pm)
Its not stuck, your heater control finally quit completely. Ford tells me its a safety feature. When it quits, it goes to defroster. The heater and air are for comfort, but you need a defroster for safety. read my other posts for more info. I have had my heater control replaced about 2 years ago and it just quit again about a month ago,
There is 1069 on back order, they are supposed to have them in stock in mid July for a price of $650.00. Does this tell you there is a problem with them?
#65 of 192 Re: AC PROBLEM [thetaz]
Jun 26, 2010 (2:36 pm)
Read post #62, #63 #64
Mine also opened different vents, when I would slow down it would go back to vent or floor, speed up it went to defrost. It did this until it completely quit both times. The new heater control fixed it for almost 2 years. Now it is out again.
#66 of 192 Re: A/C Problem [mentorman]
Jun 26, 2010 (2:46 pm)
I was told it was probably a vacuum leak on my 2003 Crown Victoria when it did the same thing. It had nothing to do with the vacuum. It was the heater control. The guy who fixed mine the first time did it in the parking lot while I was in a meeting it took him less than 30 minutes. it worked fine for almost 2 years, It just went out again. looking for the part to fix it. read my other posts for more info on this.
#67 of 192 Similar Problem
Jun 29, 2010 (11:29 am)
I have a '03 Mercury Marauder and I just noticed today that my A/C wasn't working. I tried switching to vent, floor, defrost, but nothing would work. I tried turning the fan to various speeds and nothing happened for anything setting. I can hear the compressor kicking on, but only a very little bit of air comes out. It is like it is stuck on low and neither the fan settings or the climate control makes any air come out anywhere. Does anyone have any suggestions? And please tell me it's not expensive. Thanks
Jun 30, 2010 (3:52 pm)
I have a 2007 Grand Marque and the blower motor runs at high all the time. I can't get it to shut off at all. the temperature control works fine as I can maintain any temperature I select. can anyone tell me how to cure this problem. Is it the Blower Speed Control Module?
#69 of 192 Re: AC PROBLEM [re55]
Jul 16, 2010 (1:49 pm)
I recently experienced the same problem on my '06 Crown Victoria, after completely testing the vacuum system, found the Climate Control Unit to be bad. After finding out how much they cost, I started doing some research and found a guy in Los Angeles that rebuilds them and sells them on ebay. He offers a lifetime warranty with them, and even sent instructions for installation. Rather than shipping the core back to him, I stopped by his shop as I live in Southern California, and found that he services fleet vehicles for taxi companies. Solved my problem and I will never have to pay again if it breaks. He also rebuilds lighting control modules and a few other Crown Victoria parts.
#70 of 192 Re: 2003 Mercury Grand Marquis LSE Heater & A/C motor NOT Blowing [ascorbate]
Jul 20, 2010 (5:38 pm)
My 2003 Marauder blower stopped working suddenly. All else worked. I removed the electronic speed control module right behind the passenger valve cover on the duct. After removeing it, I opened the module. To my surprise the solder had cracked around one of the main terminals. I soldered and put it back together. Now blowing my socks off. Back in service in 60 mins. !!
I hope this cheap fix helps you. Saved me $150.
#71 of 192 How to fix this problem for $2
Jul 26, 2010 (11:07 am)
I just finished fixing a 2003 Grand Marquis for air blowing out the defrost only. This is the goverment mandated failure mode.
The problem is that the vacuum harness is leaking vacuum where it connects to the back of the conrol head. The vacuum harness connection ports relax after several years. You can replace the vacuum harness (F5VY-19C827-A) $20, or just clamp it tight with 2 ten inch tie straps from the Lowes or Home Depot.
Pull the trim covering the control head straight out. remove the control head (4 screws). Remove 2 torx screws holding the bottom part of control head in place. Feed a tie strap around this part so it clamps the vacuum harness to the control head. I put one tie strap on either side of the black vacuum supply hose in the center of the harness. Operate the controls to be sure it is fixed.
If you wish, you can disconnect the vacuum harness under the dash for easier working room. It just pulls out.
I can post a picture if needed.