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I've got a 95 Vision 3.3. Sometimes after driving for 1/2 hr or so with the A/C on, the volume of air coming out of the A/C vents seems to diminish and not be as cool. If I switch off the compressor and just let the fan run, I can gradually feel the normal volume of air come out again. It's as if a condensor has frozen over and is thawing out. Anyone out there ever had this problem and found out how to fix it? Thanks.
 

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I bet your A/C Evaporator is iceing up. There is a probe that tells the computer that it needs to cycle the A/C to keep it from forming to much ice. If the probe is not working then it will ice up. Here's how to replace the probe:

Evaporator Probe

REMOVAL & INSTALLATION

See Figures 1 and 2


Fig. 1: Twist the access plate counterclockwise one-quarter turn and remove the plate




Fig. 2: Insert the new probe into the uppermost access hole



The evaporator probe is located on the lower right side of the heater housing.

Disconnect the negative battery cable.

Remove the right side under panel silencer.

Disconnect the wiring harness for the evaporator probe.

At the center of the heater housing, locate the evaporator probe access plate. Using a flat bladed prytool, pull back on the locking tab. Twist the access plate counterclockwise one-quarter turn and remove the plate.

Pull the probe out of the evaporator core. This plate must be pushed inside the A/C unit and oriented in such a way that the plate can be removed.

To install:

Install the new probe into the evaporator. The new probe must not go into the same hole that the probe was removed from. The evaporator is manufactured with three holes for probe insertion. Insert the probe in the uppermost hole.

Install the probe access panel.

Attach the probe wiring harness.

Connect the negative battery cable.
 

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Discussion Starter #3
Thanks a bunch. I'll give that a try, and it sounds like it'll work. I'll let you know.
When I bought the car new in '95, I took it back to the dealer a few times because the A/C would smell like the old aftermarket A/C units you could hang under your dash before factory A/C was standard. Sometimes those things would freeze up and had a unique smell. But the service reps never got a clue as to what I was talking about, and I'm not t h a t old. Anyway I think you've solved a problem for me that was brewing from the 'get go'. Thanks Again.
 

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Discussion Starter #4 (Edited)
Thanks a bunch. That sounds like the solution I need. I'll let you know how it goes.

When I bought the car new in '95, I took it back to the dealer a few times because the A/C would run for a while, then start to smell kind of like the old aftermarket A/C units you could hang under you dash back in the 60's. They would freeze up like that from time to time and had a unique smell. The service reps never really got what I was describing, and this problem was probably brewing since then. I'll count myself as fortunate that the A/C has hung on this long and has never been cracked into. Thanks Again.
 

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It took me a while to get the time to check out your solution. I really appreciate the diagram, but I need a little bit more info on where that is. Is that something under the hood, or in the dash?
I pulled the glove box, and saw where I think that critter might live, but I didn't think I could get in and out of there before I needed the car again. Can you help me out a tad more? Thanks.
 
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