a/c short cycle

and where is the pressure switch?

in the drier?

:givemebeer: Trade secret.

J/K, the low pressure switch is at the accumulator. As for your question about the pressures, it varies according to outside/ambient temperature. At 90 degrees ambient, high side pressures should be 200-220, and low side pressures should be 25-30.

Here's a link with info, everything you never needed to know.lol. It's ALL about HEAT and TEMPERATURE!

sweet thanks

ok...so since the last post it has been pretty nice outside...until last weekend, when i turned the a/c on it was blowing straight hot air....so it obviously had a leak so i had my mechanic buddy stick it on the vacuum for a lil bit and then we started looking and the high pressure service valve was leaking and also the orifice tube was about 75% clogged up....so replaced the orifice tube and service valve and i have a/c again and its not short cycling any more!!! yes!!!!

it was short cycling reading 32 on the low side so i guess maybe the stopped up orifice tube may have caused it?....i dunno but it works now....i just hope that was the only leak.

thanks guys for the help

Glad to see you got it fixed!! Leaks are not uncommon on these trucks.

I have the same magnaflow too and love it, you can usually get a used one on ebay or cragislist. I wanted a valid warranty so I got it here. Magnaflow 16656. Also some of the forum sponsors usually have a sale going on. Either way its a great exhaust system, sounds great, and very easy to install.