I'm piecing my ac system back together as it was cut apart when I bought the car. I found a hard line on ebay...and it has a sensor on it. I really believe that IS correct for even my car, as my car has the pigtail for it. But i've searched around and I found that only cars with two fans have it? Other wise it's plugged? What is the name of the switch? Here is a pic of the switch.

It threads onto one of the valves.

 

Any help? I should be getting the rest of the parts I ordered tomorrow.

 

Im pretty sure thats the AC clutch switch

 

I looked for that and didn't find anything resembling what I posted. Anyway, I have another question...when converting to r134a, do I need a certain orifice tube, or will a stock replacement work. I read there are variable tube and fixed tubes. What is the difference?

 

It goes on the high pressure side line

 

Looks like the high pressure switch. When you turn your A/C on the high pressure side is around 220psi and this I think is what turns the fan on.

 

Yeah it's the connector on the high pressure line.

 

Okay, I know where it is now, but do you know what it's specifically called??

 

Here's what I used on my conversion to dual fans:

A/C High-Pressure Switch – GM 14089590 (NO, Normally Open).
A/C High-Pressure Switch Harness/Pigtails – GM 12085521 or AC Delco PT131.

Pics of the above (post #7) and info below:

https://www.thirdgen.org/forums/cool...electrics.html

JamesC

 

Stock orifice is a white GM (fixed) orifice tube. These are 0.072

Many people with our cars use a blue Ford (fixed) orifice tube. These are 0.067

The smaller Ford orifice is better for stopped traffic, slow speed, gridlock etc. The GM one is better for highway driving........Most people have more trouble with stopped traffic and losing performance than they do with highway speeds. With R-134a, these will typically have a low side pressure that is too high. (Lack of cooling performance)...... The blue Ford orifice will help lower the evaporator temp which in turns means colder vent temps for you.

There are also 0.062 and 0.057 orifice valves. Typically Chryslers would use these. Some Fords use the 0.062.

http://www.aircondition.com/tech/que...be-Color-Chart

http://www.autoacsystems.com/fasttra...hotoother.html

Don't go below 0.067 though. Going too small of an orifice and you'll run into troubles of not getting enough oil through the system, and increased compressor horsepower draw at highway speeds.

The Smart VOV (variable orifice valve) will move itself depending on your situation. Smaller at idle and larger at faster driving speeds. They're supposed to give you the best of both worlds. I haven't used them. But they are a moving part. Whereas the fixed orifice has no moving part.

If I were you, I'd go with the Blue Ford orifice.