Air Con Stops Working Below 1500rpm

[whistle]

My aircon only works when the revs are above 1500rpm. When i stop at the lights you can hear the aircon compressor clutch click off, then when the revs go above 1500rpm it clicks and starts to get cold again.

Has anyone else had this problem or can help me sort it out?

Thanks David

[Jay_stylz]

yeh had the same problem time for a regas or new compressor

[Kinks]

there's a low-rpm cutout on AC so that you don't stall your car, sounds like yours is set too high. i've seen knobs on an ECU which control the low RPM cutout before, or it's under the passenger side dash a lot of the time. can't help ya with R33s unfortunately never needed to find it on mine

[whistle]

I dont think that i need a regas or compressor as it's pretty cold when it's working.

Does anyone know where the low-rpm cut out is located. It's a R33 GTST

[TRB-001]

sorry i dont think that correct. im a nissan mechanic turned a/c mechanic and unless i missed somthing there isnt a cutout switch for any nissan....

you have a pressure switch that cuts the clutch in and out which cannot be adjusted..... and you also have an idle motor (IAC) that allows more air flow thro the throttle body to compensate the extra load on the engine wen ac is on)

your saying it only happens above say 1500 but is that 1500rpm on the spot or while driving..... sounds to me like your a/c fan isnt working or ur gas is overcharged just abit..... and only works wen you have enuf air flow to cool the gas and bring the pressures down......

see wot its doing..... pm me if u want more assistance....

goodluck mate