AC Short Cycling

[albi1cnobi1]

As the title states my ac is short cycling. The compressor cycles on and off in short intervals. The longest it stays on is about 15 seconds, but average is usually 5 seconds or so. The air does blow cold but every once in a while at idle it will blow warm. I hooked up the charge/test manifold and when the compressor is on it reads full but when it's off it goes into the red( needs service/overpressure) zone on the gauge. Any ideas? I'm all ears.

 

[Old_Horse]

Subscribed.

I hope someone answers, because that pretty much describes what's going on with my AC. When it blows cold, it blows COLD. But pretty much only when under throttle. When I slow at a stop light or stop sign, it starts to heat back up again . . .

 

[pjohnson1980]

mine too!! PLEASE!! anyone??????

 

[pjohnson1980]

I did a search on google and found this:

http://www.bsntech.com/bsntech-blog-mainmenu-321/commentary-mainmenu-291/5601-compressor-rapidly-cycling-on-and-off-in-car-air-conditioner.html

"Called up my mechanic and he basically told me the same thing - he said that if the compressor was rapidly turning on and off, it was because it was undercharged."

It can also be over charged. hope this helps (me)!