my a/c pump seems to cycle every 30 seconds or so even when the a/c is not turned on. is this normal? i dont like it, can i just un plug it somewhere? it never gets hot enough where i live to need a/c.

 

ya just unplug it the plug is right there going into the back of the AC pump

 

Are you running the defrosters when this happens? Some vehicles use the ac system to take the humidity out of the air to assist with defrosting the windows better. That could be the reason that it is cycling on and off also.

 

interesting thanks for the info that helps me as well

 

its doing it all the time. im going to un plug it. it cant be helping the fuel economy the way it pulls the motor down so noticably. i will check and make sure on the defroster thing though.

 

it might need a recharge
once the system gets low it will cycle on and off
low side cut off is set about 32 lbs
below that amout of pressure you freeze the evaporator
ambient temperature also has a lot to do with the low pressure switch

 

different pressure switches cut out at different pressures, we run in to that at work sometimes on heavy equipment, prolly just needs recharged

 

Why recharge it? He says he doesn't need to run it at all where he is located. So why recharge if he isn't going to need it?

 

well you nailed it! it is running with the defroster. i may still un plug it and try the defroster without it

 

good point i missed that