I have a 2001 Lincoln Towncar with 122k on it. The heater went out this winter and I took it to a guy that replace the blower motor. The blower was not the problem. He then replaced the main control unit in the dash. That made the blower work on all speeds as I can hear it running. The problem is, there is NO air movement from any of the vents on any settings. When switched to def, vent, heat I can hear it switching but nothing happens and I have a complete lack of airflow:/
I looked for a filter on the firewall that may be blocked and it appears to be missing, or this car doesn’t require one? I have no idea where to start, any suggestions would be great.
The problem might be with the air inlet door actuator.
The vent system closes the air inlet door when the system is turned off or when the vehicle is turned off to prevent air from entering the vent system.
If the air inlet door fails to open to let air into the vent system, you’ll get no air flow from the blower motor.
Tester
Here are the drawings for your system. http://www.lincolnsonline.com/forum/showthread.php?t=70930
Maybe there’ a fault with the EATC unit on the dashboard. That’s not uncommon with age. Those units have a vacuum solenoid pack inside them with a number of O-rings and foam seals. Once aged rubber starts distengrating in that tiny pipe organ type system things can get a bit stupid with them.
Your car does not use a cabin air filter.
What went out last winter? The blower? The temp control? The defroster? The heater core?
You can hear the blower running on all speeds but don’t feel air? Was the blower motor replaced and wired backwards so it’s blowing air out of the car?
Is this the automatic temp control? When you change the fan speed, does the fan sound change?
One more thing… you need a new “guy”. This one is throwing parts at the problem without doing any diagnosis. Where I’m from we call that “shotgun maintenance”. That’ll end up costing you a lot more and possibly not fixing the problem at all.
I will correct a possible mistake on my part. I reference the EATC unit as being a possible cause and have noticed that the “main control unit” was replaced which I assume means the EATC.
As asemaster mentions, I wonder about the possibility of the blower motor running backwards.
This era of Ford was prone to burned wire connectors at the blower motor or the blower motor speed control module and replacement connectors are even offered in the aftermarket for this problem.
If the blower connector was burned and the wires crossed then the blower could run full bore and produce no air at all through the vents. It should be easy enough to check.
Hi just went through this on a 2000 Town car first year I got the car replaced blower motor resistor and blower motor because it was noisy ordered blower motor from RockAuto was an exact match to factory blower motor factory plugs plugged right in and everything just got the car back from the shop today after having new intake manifold put on and all the actuators in the dash change because I had no air coming out of anywhere after the repair still no air through the dash by a hunch I was reading on this forum about making sure the blower motor turned the right direction I went out clipped the two blower motor wires on the plug striped them reversed their positions plugged it back in and I have mad air coming out of everywhere it’s supposed to so I just basically spent $1,300 to have a dash removed and all the actuators changed when it was to blower motor running in reverse make sure the motors are running the right direction when you put them in compared to the old one I just learned the hard way
Nice to hear from ok4450 and rhe same again anyway. The internet is eternal even if they aren’t but their advice still holds.
Thanks for the helpful diy’er observation. In your case the replacement blower motor’s manufacturer must have made a mistake when they wired up the connector. I was recently repairing an air-popper (for making popcorn) and had the same problem, the fan cage was running the wrong direction. In my case the motor was ok, the fan cage was placed on the motor shaft backwards. No idea who did that! … lol …
Heh heh. I spent four months assembling those hotel type cooling units. Never thought to and never had time to see if the fans were correct. We just grabbed them off the pallet that the move man delivered. The last guy on the line did the testing but can’t be sure he plugged them in or not. Stuff happens.
Way back in the early 1990s we were the first occupants of a new payload processing facility at Vandenberg AFB. I noticed that we were getting unusual airborne particle counts near the door from the locker room into the high bay. I did some particle counts inside the air shower between the two rooms and while I was in there I noticed that the nozzles on the walls and ceiling weren’t blowing air out as hard as they should. I mentioned it to the facility manager and they determined that the three phase power was hooked up backwards and the fans were sucking out air rather than pushing air. After switching the two wires the air shower worked correctly. The really good news is that the managers said up front that they weren’t experts in this work and were open to all suggestions for improvement. They even thanked me for finding the error and repeated the request for help.
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