Relay? A/C

[waterboy]

Hi, I hope someone out there can help. Worked a lot of bugs out of my 88 m3 and can't find the gremlin in my air conditioning system. My air blows cold for about a minute then luke warm. After a few minutes I hit the Air condit button and the whole thing starts over again. The pump was replaced recently with a new one along with the dryer. Is there a relay on this system? The button is functional so I am thinking some problem is keeping the pump clutch from kicking in???what is the cause?

[tomstin]

You will need to break out the wiring diagrams but two things come to mind. First, the temperature sliders have to be in the right position, maybe there is a problem in that control mechanism. Second, there is an evaporator temperature switch that prevents icing.

Both of these are required for the compressor to come on.

[waterboy]

Tried to find the eval temp sensor under the dash. Cant locate it. Is there a good picture out there I can get. The ones I see are not helping.

[wolfador]

I can try to grab a picture of mine tomorrow since I just messed with this. Its to the upper left of the vent on the drivers side near the pedals.

Looks like a metal box with metal wire coming outta it. One screw on the bottom, 2 wires on top.

[waterboy]

finally found it Wolfador, thank you for the offer. One more thing, Where in the heck is the Relay? I look at at wiring diagrams and they are no help. I plan on replacing the Relay; and if that doesn't work I will replace the switches on the evaporator.