If it was an A/C sensor would it cause the regular surging as in my case? I would have thought that the sensor would simply detect the aircon being on then ramp up the revs to compensate fo=r the additional load in normal operation or not up the revs if it has failed. in my case it is a very rythmic in cycle, if it is the A/C sensor that is causing the surge it as if it has decided "oooh Aircons been switched on, thats not enough revs, yes it is, no its not, yes it is, not its not, etc, etc" - Man I'm baffled by this one, it did seem like air leaks before i checked the hoses, but now they have been tested and are no longer a suspect in this case. As i said in the original post i can have any electrical load on in any combination, but as soon as the aircon comes on, surge away city.
In what way would you mean by a "temp sensor problem" the engine temp appears OK if it had a temp sensor problem would this not show up in the guage? or would it just manifest itself in this way.
Back to the aircon sensor, can anyone tell me where it is please and if it can be Ghetto tested at all, if it is just sensing the A/C status then it should be a basic on/off swith afair like a reverse lamp switch telling the ECU "more power Scoty, aircons on".
Knowing my luck the A/C sensor will be 2 miles inside the engine bay I'll have to sell one of my kidneys to pay for it and it will be on back order from Frauds until the next mellenium!!
