Question about 2000 Ford Windstar

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When you move the temp. control from hot to cold there is a nocking or clicking noise. doesn't sound any thing like an air lock in the heater core. sounds more like its in the heater duct

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I have the same problem.There is a motor attached to the hot cold louver under the dash and directly in front of the heat/cold control pot under the dash. The motor is white and there is a shaft that moves the louver. It moves approx 1/2 turn from hot to cold. The louver is jammed or the motor is not stong enough to move te louver. I got underneath and helped with the rotatation of the motor at the extended shaft. Basicalliy moving it to Hot for winter and Cold for Summer. To cheap to change the motor.The clicking noise is the motor driving an possibly stripping the gears.

Posted on May 15, 2009

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There is a vacuum operated flap that moves in there.check and see if something is stuck,or a foreign object from the dash maybe fell inside through the defroster vents.

Posted on May 15, 2009

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I have fixed two of these, the noise is caused by a busted electric motor in the center of the dash called a blend motor. You have to remove the lower console and reach under and behind the dash. The box is about 4x4 and an inch thick. It has 3 screws and a line up stud. Remove the screws and unplug the wiring harness. A new motor is about 60 bucks at the dealer. Be sure the notch in the shaft lines up with the hot/cold. I can do it in less than an hour now. Tight spot though!

Posted on May 22, 2009

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1 Answer

The A/C pump starts when i move heater controls to defrost or mix


Great question dustin but the A/C is suppose to come on in defrost or mix mode- this is floor & defrost. Does not seem to make sense does it. One of the things the a/c does is remove the moisture from the air. You need warm DRY air to remove the moisture from the windows. An automotive H.V.A.C. ( Heating,Ventilation,Air conditioning) first forces air thru the a/c evaporator core then thru the heater core and out the selected vent. If you only want a/c a blend door will by-pass the heater core which is controlled by a hot/cold knob or digital temp cotrol on the dash. Now back to the cold air problem- assuming the basics are all ok- Coolant is full, Engine gets up to proper operating temp-around 195 degrees- upper radiator should be hot. Both heater hoses should be hot. If thats all OK the blend door might not be working. It is controlled by an electric motor called a Blend Door Actuator which are prone to fail. I have replaced many on ford vehicles. Hope this helps

Nov 26, 2013 | 2006 Ford F-250 Super Duty

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Cold air only from heater


first check temp gauge on dash is it normal if so termostat is fine than check the heater hoses going inside from engine compartment if they are hot rule out control valve if it in the engine compartment sit in the vehicle and listen for any noise when you move heater temp switch from cold to hot if you hear clicking noises and no change it may be blend door accutator with moves when you slide or turn heat control nob the heater may have to be removed on some models eexpensive repair may be needed

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My mitsubishi galant temp control lever won't switch to heat


that happened to me the heater core went out ive read alot of different things about 03 galants most of them have the same problem it started with a grinding noise turning the temp contol, its actually the heater control motor value it causes the heater core to go out

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Heater doesn't get hot on 96 chevy truck. Blows good, just cold. Replaced thermostat, flushed radiator. Any ideas?


Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Dec 06, 2012 | Cars & Trucks

1 Answer

Heater doesn't work


Make sure the coolant level is full in the reservoir.

If the coolant level is good feel the hoses that go to the heater core back by the firewall. If one is cold and one is hot that the heater core is plugged. I have had fairly good success back flushing the heater cores and getting them to work. If back flushing does not work than the heater core will need to be replaced. The entire dash will need to be removed to do this.

If both the hoses are hot than it may be the blend door actuator. You should hear a distinct difference in the air flow from the vents by moving the heat control from full hot to full cold.

The last thing is the t-stat could be stuck open. If this where the case than the temp gauge will also be reading low.

Check those out and let me know what you find.

Feb 14, 2012 | 1999 Mercury Sable

1 Answer

1995 saturn sl2 heater blows but doesn't get hot


Could be several things. First, when car is fully warmed up, open hood and feel your two heater hoses coming out of firewall. Make sure your heater control is on hot, both hoses should feel hot. If only one is hot, your heater core inside heater case is either restricting flow (clogged) or an air pocket is restricting flow in your coolant(need to "burp" system-get all the air out of your cooling system) . If heater core is good, and circulating good, then you may have a temp. control door that is inoperative under dash, and not allowing air to move over your heater core. Good luck.

Oct 23, 2011 | 1995 Saturn Sl

1 Answer

95 Jeep Grand Cherokee....I have no hot air. of course I assumed heater core at first but there is no puddle on the floor board and both hoses going to and from the heater core are hot at normal running...


Your heater core could be plugged with dust if this problem came up slowly I would suspect that. Another thing that cold be wrong is a trap door is not opening these are operated by cables vacuum or stepper motors. Confirm that something happens when you move from cold to hot on the control.

Nov 25, 2010 | 1995 Jeep Grand Cherokee

1 Answer

No heat


You could try flushing the heater core incase it has a clog or an air pocket but before you spend money and flush or replace anything, do a little diagnosis before you do a bunch of work you don't need. It saddens me to see how many people just will not try to figure out what is the actual cause and will just start replacing things.

Have someone move the temp from hot to cold while you look at the heat control valve that is near the firewall. You should see the thing move. If it doesn't move, figure out why. Either there is no vacuum to make it move or the valve is shot.

Second, while in hot, feel the heater hoses and see if they are both about the same temp. If they are, then no flushing is needed. You have flow through the core. If one hose is hot and the other cold, or much cooler, that doesn't mean you have a plugged core yet. Remove and inspect the heater control valve to see that the little door inside is actually moving when the arm moves. If it is, then BACK FLUSH the heater core with a garden hose, then use a chemical flush kit on the entire cooling system.

If you have flow through the core, then the problem is in the mix door or mix door controls.

These tests are done while running, with the blower on full. Let me know what you find.



Benjamin

Nov 05, 2010 | 1999 Jeep Cherokee

3 Answers

HEATING PROBLEMS


Need more information. The most important thing would be to watch the heater water valve move when someone turns the control from hot to cold, back and forth?
Heater valve controls tend to be operated by vacuum, and switched by a heater computer. Lots of possibilities. But first tell us what you see move when operated? Valve is usually in engine compartment, in the heater hose. Follow the hot one.

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1 Answer

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