I don't believe what it happening is correct!

No matter what temperature I set the Auto Climate too, even as high as 40 (max). As soon as I hit the auto button the magnetic clutch engages with the air conditioning compressor, even though the heater is blowing hot air into the cabin as it should.

This can't be right surely?

Any ideas guy's?????

do you think is is relate dto your rev issue it would make sense. try disconnectiong the air con relay in the main relay box. see if the rev issue remains

Pulled the relay and the magnetic clutch no longer engages as expected.

tried replacing the relay with a known good one and the problem re appears. At least this eliminated the relay I suppose.

I will leave the relay out as you say z32bolt and see what happens, as you say, they may be connected.

Thanks for you help.

i dont think it will be the relay itself at fault, probally more of a switch related matter. ie it cannot decide wether the switch is open or closed. disconnecting the relay simply disables the ability for the aircon to engauge. the ecu increases the base idle when the aircon is turned on or off to compensate for the extra drag caused by the aircon compressor engauging.

realistically if that isnt the cause of the fault ie the aircon not engauging disengauging properly and causing you to bog down or run high, (makes sense really as the numbers of increae you were reffering to would be about right.) you may have an air leak issue which is worth checking or as already sugested an air metering issue, idle control valve or throttle position sensor faluts.

I don't believe what it happening is correct!

No matter what temperature I set the Auto Climate too, even as high as 40 (max). As soon as I hit the auto button the magnetic clutch engages with the air conditioning compressor, even though the heater is blowing hot air into the cabin as it should.

This can't be right surely?

Any ideas guy's?????

 

Yes thats quite correct, its a case of pressing auto and then pressing econ at the bottom, that is the only way to switch the ac off, remember ac does work with hot air too, great in the Winter for keeping the windows clear as the air has been dryed.

 

Jeff TT

Cheers Jeff, I never would have figured it like that. I was more along the lines of , heat equals heater matrix and cold equals air conditioning. You live and learn I guess.

Thanks mate.

 

By the way Jeff, would take a look at my post, seriously!! Please help.

Really baffling me.

Edited July 14, 201213 yr by redwine300