Search results for query: blend door

I had the same problem with my '88 Diplomat. The servo worked fine; the blend door itself was stuck on full heat. I fixed it by grabbing the rod that stuck out (for the servo) with vice grips and gradually working the door back and forth. I wondered if it was stuck from the factory, since the...

I have a box of “bad” blend air door servo motors. Even tried to fix a couple – to no avail. The "add-on" water shutoff valve works fine – but I wouldn’t keep it shut off for a long period of time. Been my experience that a lack of coolant flow though the heater core causes them to leak a lot...

IME with my 5th aves, when you slide the temp lever hotter or colder, this sends current to the electric motor on top of the blend air door to open or close depending on your desired temp. Mine got stuck on full heat and the motor never worked again, so I had to disconnect the heater hoses and...

Man, that's a noisy little servo. Got mine working, thank you to all who've posted pics and descriptions, made short work of it. I could not tell exactly what the problem was, however.I had the typical 'temp lever won't go all the way to the right... the temp sliding switch inside had...

The blend air door servo ELECTRICAL CONNECTOR seems to be the culprit for my occasional 'no-heat' situation for my 88 5A w/ATC, as it crumbled in my fingers when I went to inspect it. The CONNECTOR has two 'pinch-together' tabs, the top one broke. Is there a known PART NUMBER for these...

I found a very close medium blue stretchy fabric (not foam backed) for my 1988 5A. The fabric was on the shelf in the section that had bolts of general use vinyl at Wal*Mart's fabric section. $1/yd is what I paid :) I put down some contact cement around the inside edges of the A pillar and it...

The Hot Water valve under hood is either open or closed (no mid position). It is turned off (no coolant flow) when HVAC system is off or in Max A/C. All other times it is full open. This applies if it has regardless if regular A/C or ATC. What controls the temperature coming out of the...

The ATC (Automatic Temperature Control) uses both the A/C and heater. The A/C runs full time and adjusts the amount of air flow through the heater core (which is also running full time), via the blend air door/door actuator, to maintain the desired temperature. It is quite simple, when it...

...vent shaped sort of like a pizza pie. That's the temp sensor. There's probably a small fan than pulls air across a ballast resistor with a heatsink, as the air temp changes, so does the resistance, and that voltage changes movements in the blend door. Just a guess. The FSM may have more details.

...cabin. When the temperature sensor goes above the set temperature, it sends a electrical signal to engage the compressor. I think the air blend door is open all the way when the system is put into semi-automatic mode. System is semi-automatic in that it can only cool the car, it cannot heat...

There are three motors that operate the A/C air doors. Recirculation air door, which is located by the blower motor. It allows outside air to come in in all modes except for Max A/C or when off. The A/C mode door actuator. It changes air from feet, to front vents to windshield. Green arrow...

I agree with Aspen500. It turns off any hot water flow inside of cabin during Max A/C and in "off" mode. All other times it allows full hot water inside of cabin, which is then controlled using the blend air door (via cable or motor with ATC (Automatic Temp Control).

The valve actually only closes off coolant flow when you select MAX A/C. Otherwise there's always flow through the heater core. If the blend door was an absolute seal with the temp all the way to cold it wouldn't matter but they aren't. They always leak a little air from the "hot side". The...

...and finding out what's going on. That's what I would do. Window whistle is a bad seal somewhere. The heater.....hunches only The blend door isn't opening or.......don't even want to say it.....heater core? There are a few good heater related threads on here. But I'm by no means an expert...

I bought mine from Jim was a good transaction. Mine was broke right at the bent section that hooks to the slider on the switch it self. At the other end of the cable you will either have a flat clip or a clip with a bottom on it for mounting to the heater box. Also AC and non AC plays a part in...

...out to just keep the compressor running, very scientific, I know.. I found out the reason my temps were all over the place was that the blend door motor cable connection was partially cracked from age, so it only had intermittent contact. I put a zip tie around it and that cured it...

There's supposed to be a metal push clip on both the control lever and the blend door crank arm to keep the cable eyes secured. If memory serves, the door end uses something similar to the pic, the control end is a rectangular piece, part number 6029 889 "nut". This is it...

yeah these are available on Ebay, Jim IS a better bet as the eBay ones are no returns even if it is broken

I'm going to disconnect down on the door arm. I think or I hope there isn't an issue inside on the blend door

...is stuck on heat (to the right). I thought it worked prior to the core replacement. Perhaps I damaged it on removal. I can move the arm (blend door) on the heater box, so I'm pretty sure the cable is fubar. It looks like it has bent right at the controls. Are these available NOS? Will the...

My theoretic exam part: manual AC to ATC conversion on HN ( Aspen / Volare) Chrysler models: On my parts catalogue I found out that there are Chrysler models F/G and H/N that share a lot of AC related parts. Therefore, after some theoretic examination, I found that the major differences are...

Not 100% myself. I was under the impression that the old style blend door was cable operated and the newer ATC has the resistor and motor operated blend door. If I move my temp setting on the Volare or Caravelle it sure feels mechanical and immediate as opposed to the Fifth where there's a delay...

...happens is this: a. In heat mode, when the temperature sensor detects the cabin temperature is below the slider setting, it moves the blend door to allow more heat in, at the fan speed selected by the fan speed slider. As soon as that temperature is reached, the blend door closes, not...

When you turn the temperature down you're closing the blend door. That lever is attached to a cable that opens and closes the door.

...be almost trivial with an analog circuit. The analog circuits could then be used to power a solenoid, or switch vacuum to move the air blend door. There is no need for an external temperature sensing element, as it really doesn't matter what the external temperature was, as long as the...