pic 2

 

is that thing? Ive never noticed one of those on mine. Maybe someone else can help you out, Ill look in the manual and see if I can figure it out too

 

I dont think they used them until 90 or 91

 

X2 i have a 90 and dont have one

 

I went to the junk yard and picked up 2 of them that fixed my problem but I would still like to know what it is?I seen some older trucks with kind of the same thing but they were a little different.

 

Don’t quote me on this but my 93 has a variation of the same set up, I believe its just a temp/pressure sensor that will tell your clutch to engage and disengage when the desired temp is meet, or if the system is empty it wont allow the clutch to run. again, I'm just throwing that out there, don't beat me up to bad, I’m no ASE certified guy nor an expert on anything haha

 

Thanks for all the help everyone!

 

If the temp sensor in taped to your lower side line (the one that gets cold) and the wiring ties in to the line as well then that is you low pressure switch, and the temp sensor is most likely reading super heat. Short answer it keeps you compressor from cooking itself should you loose you A/C charge. My 89 looks nothing like that though.

 

I was just wondering if anyone found out where to get a new one from?