Air con - just died

Most likely reason is that it needs a recharge, as well as the drier bottle replaced. There is a pressure sensor in the system, and when you lose refrigerant pressure, the comressor won't kick in. Go to an air con specialist. Brian.

Brian, you may very well be correct but the only thing that does not quite stack up in the OP is that the tacho no longer indicates increased revs when the air con is on. On my pug 405, simply switching the air con on instructs the ECU to rasie the idle speed to around 1000rpm. This happens whether or not the compressor is running.

I wonder if there is an electrical fault??

Bob

Does the heater fan work ?

If not open up the panel in the passengers foot well and check the connection to the red wire at the back. Have this problem frequently on my

David

Heater fan is working ok. Looks like I have a problem with the revs as well. When the A/C was working it would kick in the compressor and decreases the revs to about 950. Normal start up is 1000 until the wax thermostat slackens off the (to me at least) rather primitive anti-stall device. May be of use in really cold weather. Would this be another (blasted) sensor gorn wrong with the revs decreasing rather than increasing?

I have a 1.9 non turbo with a Lucas/CAV injector pump. The wax stat works by slacking off a wire attached to the fast idle lever.

thanks Bob