Driver side no A/C - Passenger side fine - AFTER blend door change

[peppelepugh]

Long time no see everyone!  I've fallen off the map a bit on the forums, but I'm back!

Here's the issue:

Driver side blows warm air on 60* AC, while passenger side blows decently cold.  When I set the temp to 90*, good lord she's nice and hot/toasty on both sides.  No clicking from the blend door motors this time.  When I set it to "dual", I get the same results on each side. Driver side just won't blow COLD.

What I've done:
I already replaced the blend door actuator motors (pain in the arse as always...).  Now, I'm just stumped.  I did the disconnect the battery for 15min trick, no luck.  I've been reading about using ForScan to troubleshoot a bit (https://forscan.org/forum/viewtopic.php?t=4224) but will be checking it tonight. I plan on comparing the ambient temp to the evap temp sensor (using torque pro). 

As always, thanks in advance!!!!

[SHOdded]

Are both rad fans running with A/C on?  Is the refrigerant topped up?

[ZSHO]

What part number actuator did you order! Z

https://fordpartsgiant.com/parts/ford-motor-asy_aa5z-19e616-b.html?Make=Ford&Model=Taurus&Year=2011&Submodel=&Filter=()


https://fordpartsgiant.com/parts/ford-motor-asy_aa5z-19e616-c.html?Make=Ford&Model=Taurus&Year=2011&Submodel=&Filter=()&Location=heater-air-cond-external-components,,19E616B

[peppelepugh]

Both sides of vents are blowing strong.

I ordered 2 of these(https://www.amazon.com/gp/product/B00GJJ088U/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1), the motor directly behind the glove box that controls the defrost/vent/floor is 100% fine.

Last night I fired her up without the AC on (car parked on a 15*-20*) let it warm up. then kicked on the AC. Heard a pretty steady HISSSSSS when RPMs were around 600-1000. But if I gave it some gas, It calmed down.  Leading me to believe that I might need topped off on some refrigerant... I'm no A/C expert by any means.

Thanks guys!

[Sbouvia]

I also had a very steady hiss behind the dash. I was low on refrigerant. Brought to dealer and got it recharged and they had it for almost two days and said no leaks. Now I have same issue as you. Passenger side nice and cold, drivers side doesn't really change. Forscan says temperature doors on each side are moving, but I got a drivers temperature door to change anyways. Will report back after I change that out.

[SHOdded]

If the bda change does not work, there might be a "secret" recalibration procedure to reset the module. YouTube is very helpful in this regard. I also see Forscan Lite has added quite a few features lately.  Worth a look.

[peppelepugh]

Sbouvia - I was thinking possibly the same. when I changed the BDA motor I plugged in the module and adjusted the temperature, sure enough it was moving the full range of motion. So all those are plugged back in and happy.

SHOdded - I did see a lot of OLDER (pre '08) vehicles doing that secret re calibration stuff, but nothing stuck out for a newer system with the Sync.  I'm going to fish some more for sure.

I plan on re-charging/checking AC pressure this weekend, might hop onto the "cabin air temp sensor" and check those values in torque, just gotta find the PID.  Currently the ambient air temp sensor is reading correctly (the one mounted behind the front bumper).
https://www.rockauto.com/en/moreinfo.php?pk=2314320&cc=1446495&jsn=10 <-- this is what i'm thinking

[SHOdded]

 I know there are recals for Edge vehicles with Sync 2, so very possible  for the Taurus as well.

https://www.fordedgeforum.com/topic/23097-2014-edge-limited-no-heat/

Original yt video https://youtu.be/ykP_YT8OY1w

So depending on which sync u have the sequence  is different.

SSM 45784 - 2012-2014 Edge/MKX - Climate Control Stuck On Hot Or Cold Temperature Setting -With or Without DTCs B1082, B1083, B1086, B11E5, B11E6, And/or B11E7
Some 2012-2014 Edge/MKX vehicles may exhibit a condition where the climate control temperature is stuck in the full hot or full cold position. Diagnostic trouble codes (DTCs) B1081, B1082, B1083, B1086, B11E5, B11E6, and/or B11E7 may or may not be present in the heating ventilation air conditioning (HVAC) module. Program the HVAC module to the latest level calibration using IDS version 100.01 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com. For claiming, use causal part 19980 and applicable laboroperation(s) in the Service Labor Time Standards (SLTS) Manual, Section 10.

[peppelepugh]

Yeah, I'm sitting on Gen1 Sync. So i don't think this applies.

I recharged the AC today, but no lucky.  Now i'm not getting any AC out of the passenger side either.  Still hearing the hissing noise behind the dash when the AC is on.  Starting to think I've got something wrong with the actual AC and for once, not a sensor/electrical issue. grrrrrr.

I'm waiting to get my ForScan approval email so i can get a hold of the trial and see what my evap sensor is reading. But at this rate, I've got a feeling it might be time for a trip to the shop.....

[SHOdded]

No you are in sync2 for sure.  Just a question of myford vs myfordtouch.  The procedure will be different accordingly

Did you use ac in a can?  Pro level gauges to check results?  Ac is likely overcharged.  Very narrow acceptable  range.

[peppelepugh]

No you are in sync2 for sure.  Just a question of myford vs myfordtouch.  The procedure will be different accordingly

Did you use ac in a can?  Pro level gauges to check results?  Ac is likely overcharged.  Very narrow acceptable  range.

Ah gotcha, I figured the Gen1 was the old school blue screen with microsoft and then the Gen 2 is the MyFordTouch (black screen).

Yeah used some AC in a can, said 46* PSI (if i'm not mistaken) when the AC compressor was off. Then dropped to 0 when the compressor was on (for the short amount of time it was on.) It was 70* outside, had engine up to temp, all doors open, but the AC compressor wasn't kicking on for very long.  Even after recharging the system, I could still hear that solid "HISS" coming from behind the dashboard when the AC was set to ON in the climate control.

[SHOdded]

Def use pro gauges.