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I found it!! Thank you everyone. Couple more questions. 1. Do i need to disconnect the battery before I change this. 2. It appears the sensor has reverse thredding, am I correct in this? Also, long arms would be handy disconnecting and reconnecting the sensor! Greg

I know i'm being and idiot (no really I know it) is this under the vehicle, I crawled all around under there last night and couldn't find anything.........really embarrassed...

Thank you!! That is down near the muffler then?

Since my TPS sensor had went to hell, I figured why not change the oxygen sensor at the same time, only problem is I have no idea where its at!! Little help? Greg

I had a surging porblem on my 92 XLT, the idle would run up to about 2k and sometimes the engine would die. Had to push the gas pedal down to far to get it to go, it lacked power and when on highway going up a hill it would ping like a mudda #&$^! Anway TPS (throttle position sensor) all...

Throttle Position Sensor I had much of what you describe, mostly pinging underload going uphill. Throttle felt sluggish and the vechicle didnt have much power. Changed the TPS (throttle position sensor) and it was like having a brand new vehicle.

HardTech the ability for the compressor to come on wasn't the problem. It just never cycled off and on properly, and eventually it would just cycle off and the only way to get it to come back on was to toggle the A/C switch off, wait for a few minutes and toggle it back on. The mechanic...

I dropped the 92 off at the A/C shop this morning and they tracked down the problem to a bad clutch on the compressor. We'll see if they are right. I still think it could be the wiring. I'll post results in a couple of days and 100 plus degrees here in Montana. Greg

Thanks shamaal, this was the switch I though you were talking about the first time, thanks for the updated pic and info. I'm probably going to take taht out and put a new one in. I'm pretty sure either the wiring is goofy there or the connection. I appreciate all the info and help!! Greg

So i messed around with the wiring again and the AC problem returned. So I unplugged the wiring again and now it works correctly. Still might be the pressure switch, the one that screws into the collector box right. (your picture is kinda dark shamaal) If its the one I'm thinking of it...

Ok, I started thinking about possible wiring issues, so I unplugged the wiring on the compressor took a look at the connections, no problem that I could see, plugged it back in. Pulled the connection of the pressure switch was kinda a pain to get off but it came. Couldnt see any corrosion...

The air continues to blow like normal, it really acts as if you just toggled it off. There is no difference on any of the panel settings either MAX A/C - Panel Floor ect. All the fan and panel settings work correctly whether the air is off or on. I'm starting to wonder if the problem isn't...

Sorry another thing, I almost never see anywater puddles from this vehicle. Normally wouldn't there typically be a puddle of water if it was just sitting at idle in your driveway?

Shamaal, yes I get cold air, and the fan works at all speeds, the idle changes when the compressor engages. BUT, you can be driving along highway, intown or just idle at a stop light doesnt really matter. You hear the compressor switch off and then it never comes back on, well on occassion...

Thanks you for the info! Where is the pressure switch? Will the system have to be discharged or is it just something that pops off and on? Thanks for the reply, this problem has been ongoing for 4 years and my wife is really sick of it ;) BTW all the fan speeds work fine, could it still be...

Hello I have a 92 XLT R-12. My compressor turns on just fine, but it doesnty cycle at all, just stays on until it overheats (I think) then it shuts off. The yellow light on the control knob stays on. If you toggle the control off, wait a few minutes and turn it back on the compressor...