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Sedans Ford Crown Victoria/Mercury Grand Marquis Ford Crown Victoria/Mercury Grand Marquis Climate Control
37 messages, Last post on Nov 07, 2009 at 10:20 PM
You are in the Ford Crown Victoria/Mercury Grand Marquis Forum. Your Hosts are pat & karens
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Replying to: p2min (Jun 22, 2006 2:15 pm)
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Replying to: euphonium (Jun 22, 2006 7:51 pm)
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Replying to: p2min (Jun 27, 2006 1:48 pm) If the fluid on the floor is clear, it is probably condensation from the A/C system, which is normal. |
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I have a 2003 CVLX. The fan will not blow air from vent. It changes between floor and defrost for unknown reasons. it does not matter if it is heat or AC. It switches with notice or any action on my part. Has anyone experienced this? vmon
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I have been searching the Forums on www.crownvic.net and fiddling around with the EATC System Blower Motor Controller circuit on our 2001 GM LS for a year trying to solve the (initially) intermittent operation of the Blower for a year. After running with the Blower hot-wired thru a toggle switch for six months (when the intermittent problem went to complete failure)I finally got around to pulling the Controller Board out of the Heater/AC box last week. On my last search of the www.crownvic.net Forums I turned-up a note from a fellow who said "[i]most guys just fix it with a little bit of solder[/i]" this turned-on a lightbulb for me and today I had a look at the solder-joints where the connector is attached to the Controller Board. Sure enough, I could see that the solder was cracked at one of the big lugs of the connector! I heated-up the pins at all 5 connector lugs and flowed a little solder into the "gaps" around the pins. When I plugged the Board into the harness I found I have a Blower that once again works under control of the EATC! Now all I have to do is re-install the Board into the Heater/AC Box - a real tight squeeze. Right now I have it tie-wrapped to something under the hood but the heat sink on the Power Transistor gets REAL HOT - I think the best place in it is back inside that Heater/AC Box... |
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Mine went out as well a couple of weeks ago on my 2002 Grand Marquis. I think it did the same thing yours did, as my mechanic said it was not burned, it just quit working. This should make you feel better - it cost me $145 to have my mechanic fix it, including parts. |
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| I read that you can check your Connectors and possibly Solder to fix the Blower problem. Where might I find the Heater/AC Box so I can access it and see if I have the same connector problem? | |
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Replying to: vmon (Jun 26, 2006 8:03 am) This fixed my air problem. Good luck. Brian
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I have read thru another post in this forum about heater and a/c blower motors that stopped working suddenly. I have a similar problem with a 2003 Mercury Grand Marquis LSE with climate control (Electronic Automatic Temperature Control or EATC for short). I have checked the obvious including the inside passenger compartment fuses plus the power distribution box underneath the front hood with particular attention to both the blower motor relay and blower motor fuses. I even swapped them out with other working relay and fuses in the power distribution box. I then measured the voltage being applied to the blower motor itself under the hood. It read anywhere from 1 to 6 DC volts or so. I have a similar blower motor layout in a well maintained 1997 Ford Crown Victoria (without EATC) and that voltage reading was 13-14 volts whether the fan speed control was set on low or high. So I'm suspicious of the lower voltage I measured in my Grand Marquis versus my Crown Vic... why would there be this big difference? While traveling down the highway yesterday at 50-60 mph with the a/c set to 70 degrees, I could feel cool air coming from the vents in my 2003 Grand Marquis probably because of some of the air being recirculated from the outside to the inside. The faster I went, the more cool air I could feel coming from the vents BUT still the blower motor wasn't working. So the A/C system is working, it just ain't blowing this cool air around the inside of my car! I read about a EATC module self test today at: http://www.p71interceptor.com/eatcswap/selftest.html which I performed with NO Diagnostic Trouble Codes (DTC) indicated. I then disassembled the fan speed control switch, cleaned it with a cotton swab and some rubbing alcohol, reassembled everything but still the same result... the heater and a/c is not blowing any warm or cold air whatsoever. What else am I overlooking?
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