isuzutrooper94ftw

My AC acts up from time to time when I come to a stop with the AC running, something clicks a bunch of times and the RPM meter goes crazy then it settles down. Sometimes it jerks the car a little bit and when I take off it runs fine. Then I come to a stop and it clicks and jerks again.

Is it the compressor? The air is still extremely cold. Anyone know? TIA.

isuzutrooper94ftw

as you guys can see, I don't know much about autos. So I'm glad I found this place

DAB77

The clicking is the A/C clutch cycling in and out.works off of low side pressure switch.when the low pressure gets to about 34psi compressor turns off. rapid cycling is normally low refigerant charge.you should have this checked first. could also be cycling on high pressure switch. if the condensor fan is not operating, you could have enough air flow cruising to cool the condensor and as you slow to a stop the head pressure increases and cycles the compressor off. and of course a bad connection can also cause the problem,so chech all the wire connectors.

isuzutrooper94ftw

Thanks! IT may be low on coolant? That could make sense seeing as nobody added anything to the car in years..