rear air not cooling nor are the linesets is there electronic pressure control before the txv.


Asked by Jun 22, 2014 at 08:57 AM about the Ford Excursion

Question type: Maintenance & Repair

02 ford excursion the small hot line to the rear air has been leaking due from rock chips.  draining freon out the low side under the hood.  Did not realize the cheap gauge set doesnt allow the high side to open.  so it  didn't allowing the rear ac line drain until I cut the small pipe to splice.  as the freon now spaying out the I heard a click noise by the drier where the 2 vapors lines meet for front and rear..   aft, repair and evac charged.. can't not get any return vapor from rear, as i was filling with 134 heard the click again probably around 50 psi. what is the click noise and need to check the door blend and txv block in back for and charge in temp. also, what I weighted in maybe too muck.

2 Answers


The click you heard is the low pressure or cycling switch. It signals when to engage or disengage the compressor clutch to prevent freeze-up of the evaporator(s). Also prevents the system from running when it's empty.

1 people found this helpful.

Okay now my txv block for rear is condensation into evap. Nothing wet or cooling out or thru txv. W/o blend damper motor in... its resting position is in cool. Txv plugged or closed?

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