93 Taurus SHO A/C Problem

I own a 93 Taurus SHO. Last year I replaced the A/C compressor (with new clutch), orifice tubes and even the accumulator. This was a rather expensive job. However, afterwards the A/C worked like a dream, the car got cold very quickly with MAX A/C. However, this year I noticed that even though cold air is blowing out, it seems like it isn't coming out of the vents at full force. The vents air speed does decrease when the fan selector knob is increased and decreased, but at like 1/4 output of what it used to be.

I brought the car in to get checked for a leak and they found no leaks or anything wrong with the A/C system (the AC Compressor was turning on and the clutch was working properly). They placed more R134A refrigerant in and it was nice and cold for about two weeks, and now I am back at the same problem. I heard that I may have a vacuum line problem. Is there anything else I should be on the lookout for or a way I can diagnose this problem myself. Could this be a relay or a switch, since from experience SHO are known for electrical problems?

Thanks.

Jack,

I had a 93 Taurus which I loved--and hated.

Regards the A/C, I had the same problem. Right after I had a new condensor and clutch put in I felt that the air wasn't "meat locker" cold. The A/C repair shop put a thermometer in the center vent and showed me that it was working right within spec.

Two things that I dealt with that you might check:

1. Near the firewall on the passenger side is the A/C pressure switch. It is screwed into the accumulator or dessicant can--I can't remember which, but it has a two pin plug plugged into it. If the car is running and you remove the plug you can jump out the two wires and it will pull in your A/C clutch. If the pressure is set too high it won't evacuate the system frequently enough to keep the ice cold air coming. Look down into the socket where the plug is supposed to go and there is a straight blade screw to adjust the pressure. I can't remember which way to go, but make 1/2 or full turn adjustments and test your results. Don't go too far or you'll end up making your compressor work too hard (or not enough) I got mine to work great this way!

2. You're not gonna like this one. Yes, Tauruses are known for electrical problems. When my fan speed started getting irregular (like one speed on the fan wouldn't work) I suspected what would be called the resistor assembly that governs the blower motor speed. Problem is, on the electronic climate control Taurus it's not your standard resistor pack. It's more like an electronic device that's all but completely sealed. Look under your passenger kick panel in the evaporator housing. You will see a small panel (2" x 4"?) with a wire harness plugged into it. Unplug the harness and take out the two screws that hold it in. You can then take it out and hold it in your hand. Unfortunately, that's all you can do. There is no test I know of to see if it's bad or not. I knew mine was bad when the irregular fans speeds finally turned into no fan speed--ever. Even with my discount at my local ford dealer the part cost me $200.00. Once changed everything was perfect again. If you think this may be your problem my advice would be to wait for it to croak completely or maybe try a boneyard where they will give you a used unit "guaranteed to work" for a much more reasonable price.

Hope this helps.
-Rob

sounds like the resistor pack like RFossella said or maby the blower motor it self, any noises when fan is running?