air cond question

[bigwave2255]

hi, I've had the slow coming on problem with my A/C for a while now, usually comes on within 5 - 10 minutes, and once working keeps working all day.

however yesterday when leaving work in 32c temps i noticed that the A/C started normally then at each of the four sets of traffic lights i have to sit at before getting onto the motor way at each light the A/C stopped working, got progressively warmer until just hot air blowing.

although when on the motorway all was good, and today its working good

when i got home i left the car running opened the bonnet ( hood) and the electric fans were not running.

there appear to be two fans in front of the radiator, a very course bladed one closest to the rad and then a less course bladed one directly in front of that,

the car doesn't over heat at any time the coolant is fine the expansion tank is ok.

in other vehicles I've owned as soon as the A/C kicks in the electric cooling fan also starts.

can anyone shed some light on how and when all theses fans should be operating

many thanks