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Mk 5 Escort
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Discussion Starter · #1 ·
Hi everyone i was just wondering if anyone could help me please. Ive got a mk 5 escort Rs2000 which has a few small issues. The heater is really hot as every Ford ive ever owned was. Theres plenty of heat blowing out of the centre vents in the dash and theres plenty of hest blowing onto the floor but absolutely nothing whatsoever blowing onto the windscreen. I dont think its the blower motor cos you can feel the heat blowing out of the centre vents strongly and theres no strange noises either. I dont think its the heater controls because you can hear the blend door opening when you turn the nob onto the windscreen and i can see the cable moving. Ive took the instrument cluster out and the dash vents to check the ducting and all is in place with no holes or missing pieces. Do you think there could be a blockage inside the ducting and is it possible to get inside the ducting? Also the blower motor at the bulkhead looks like its got 2 fans. Is it possible that maybe only one is working stopping heat blowing onto windscreen? Could there be a blockage where the outside air goes into the blower motor at the bulkhead? Does anyone have any ideas? Any help, advice or suggestions would help a lot and id really appreciate any tips. Thanks from Ian!
 

· Megger
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2,940 Posts
I don't think I can assist but when I read the thread title, my first thought was that I have a similar issue with my Mk3 Mondeo but it is the electric flap actuators that are my problem.
Then I saw your comment about the cable moving and wished that I had cable operated flaps. Would be soooo much easier.
Good luck!
 

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Mk 5 Escort
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Discussion Starter · #3 ·
Hi it sounds like we got a similar problem. A cable is probably less complicated and although i can see the cable move and hear a noise behind the dash like a blend door opening something is telling me that i cant be certain this isnt my problem. Its so frustrating because you need the heat on the windscreen this time of year. Id rather have the heater stuck to the windscreen than work everywhere else. Im no expert but ive read somewhere that the problem with your Mondeo actuators could be water damage from water getting in through blocked sunroof drains if your car has a sunroof. Just a possibility. I hope you manage to fix your car. Just keep trying and something will come into your mind.
 

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Mk 5 Escort
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Discussion Starter · #4 ·
Hi just an update on no heat onto windscreen. I looked from my drivers side footwell into the vent where heat blows onto the floor snd by putting 2 fingers in thete and pushing them upwards i could feel a flap that moved if i pushed upwards hard enough so i wondered if this could be the blend door that allows hest to blow onto windscreen. I pudhed it eith my hsnd and still nothing onto screen but ehen i looked towards the floor vent i found a alan bolt which lined up eith this door or flap i could feel. When i turned it it was level with these flaps but did not engage with them. My gut feeling is that this alan bolt should of moved that flap and there is also the same thing on the passenger side as well. . I just wonder is this my problem with a flap being closed preventing heat blowing onto windscreen? I also wondered if there may be more of these alan bolts higher up in the heater box which would open a flap to allow heat to blow onto windscreen?
 

· Megger
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I am unable to help. All I know is my similar problem. Went to the Ford agent and chatted with one of the mechs. he told me that of my three actuators, two are responsible for the footwell/cabin/screen and one for the temp.

I currently have one direction actuator out and the flap set to blow on the screen. But the temp is no playing up,, giving only three options. Off (by hitting the Off button); fully cold on the Lo setting and max heat on any temp setting.

My feeling is that my actuators are working but something in the HVAC control has gone AWOL and is sending electrical signals to the actuators so they are always rotating. hence the broke 'drive' shaft. But I honestly have no idea nor any idea on how to fix it.
 

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Mk 5 Escort
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Discussion Starter · #6 ·
Hi its frustrating. Your problem is probably actuators not engaging and opening blend doors as theyre suppose to. Ive just found on mine that i have 2 pieces of ducting missing from the passenger side of the airbox. One should go to the windscreen and one to the passenger vent in the dash. On the drivers side both ducting are in place as they should be and i get lovely heat blowing out of drivers side air vent but nothing onto the windscreen. Do you think this is because of the missing ducting causing a vaccuum leak in the hvac system. If that was the case i dont know why i still get heat out of drivers side dash vent. Its confusing. My next job is to try and find new ducting where missing and go from there really. Good luck with yours. Cars ai. Love them and hate them.
 

· Megger
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My flaps are working, but it is my understanding that when the flap hits the end of its travel, the increase resistance causes the electronics in the actuator to cut the power, but that does not appear to be happening.
 

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Discussion Starter · #8 ·
Hi just a thought on yours. Blend doors that open are usually metal but covered in a foam like material to keep heat in the airbox. As the cars get older this foam seems to wear away. Its possible that if part of the foam had worn when the blend door closes instead of foam touching something its metal and this could be causing the actuators to stop working as a safety precaution. Its a long shot but possible.
 

· Megger
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2,940 Posts
You could be right but....

One actuator has broken the drive shaft (three times as I repaired it twice) and I think the heat control actuator may also have snapped its drive shaft. So I don't think it is a problem of the actuators not working, seems to be a problem of the actuators not stopping. They continue to 'hunt' until the shaft breaks.

This is the shaft the breaks and the arrow point to the break in the shaft. when it breaks, it leave the hex part in the blend flap female socket and the splined part stay in the actuator. I repaired it with bamboo and epoxy, but it snapped again. Those actuators have quite a lot of torque going through some small moulded plastic gears.

The heat control is tricky to see and remove but even when the HVAC is off, I still hear a single tiny 'click' every 20 or so seconds. I think the actuator is running (can't hear it) and the click is tow jagged edges coming into contact.
 
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