Question about Mercury Marquis

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Air condition 02 marqui that looses volume of air thru vents after driving approx. 45 mns. Accumulator will freeze up and it appears that it's freezing evap.Also freezes up on high side past orifice tube.Replaced accum. and orifice tube and low side cycling switch. Trying to find vac.cannister? Any help will be greatly appreciated trying to replace orilice tube but cant fine the location

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Most of the times the low side cycling sw come allready adjust but sometimes needs adjustment i wil recomend to have the car recover evacuated and recharge with right amount of refrigerant because having the right amount makes the diference and make sure the low cycling sw is adjust the low side sw is designed to prevent low presure going under 28 psi and to prevent freezing on the evaporator, if evaporator freeze then it blocks the airflow going to dash board.

Posted on May 31, 2008

  • fernando arevalo May 31, 2008

    also the orifice tube on many fords is an assembly with the liquid line so by replacing the liquid line you will replace the orifice since they are one unit

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Sounds like a freon re charge is in the offing...or your pressure regulator is not working..

Posted on May 31, 2008

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