ok, so today i found my freon was low. i vac and recharged it. it held vacuum for 45 minutes with steady vacuum. no leak found.

i noticed the temp in the center 2 vents were both hot and cold.

compressor works as it should, and system is solid and leak free. i suspect blend door motor or control head. any ideas?

is there a reset procedure for the control head or actuator test/reset?

1999 xj8 vdp 4.0
w/01 motor. no mods or anything changed.

 

update: checked panel codes and found codes,

14 Water temperature input malfunction Instrument cluster output Refer to PDU (car isn't or hasn't overheated in my ownership)

23 Refrigerant pressure switch malfunction Harness / connector fault Switch open / short circuit
Refer to PDU23 Refrigerant pressure low refrigerant charge *Leak from damaged pipe or joint
Rectify as required and recharge system (likely caused by low refrigerant and has been fixed)

45 Centre vent motor fault Harness / connector fault Servo motor seized or sticking Flap seized or
sticking Refer to PDU

46 Foot vent motor fault Harness / connector fault Servo motor seized or sticking Flap seized or
sticking Refer to PDU

thoughts?

*edit*

99% sure it's a blend door issue since all the heat and cool is coming from center vents. any known issues? i've searched and all i came up with was "i remember someone having the same problem,but don't remember the fix"

i've got a 400 mile drive ahead of me tomorrow and really would love working a/c...

 

all actuators seem to be working. i can see and feel the movement from defrost-dash-dash/feet-feet/defrost-feet.

temp door is moving in and out with temp adjustment and seems to go full open to full close. (the on visible from center vent area)

color me stumped....

*update*

took for a drive, a/c is working correctly... wonder if the heater valve is begining to fail?

please, any info or insight would be greatly appreciated.

 

update, but no resolution. the problem is intermitant. it has to be electrical. every other drive it works. will update when and if i find the problem.

 

I would suspect the heater valve. I believe it's normally open, closes when A/C turned on.

 

That's my suspicion. I'll dig in to it in the next day or two. I'm unfamiliar with them, is there a way to manually close the valve?

 

i looked in the usual locations (firewall area) i don't see it. since this is my 1st jag, i'm sure i'm over looking it. any info is appreciated.

 

located the valve. tapped the servo/motor it moved. a/c works. did this 4 times today. seems to be the problem. thanks for the info.