the a/c will be cold then not cold
what can i check on this truck to get it going ?

has freon
has good clutch and compressor
has new accumulator
has new accumulator switch

 

Is the compressor cycling to quick ? If not and it has proper amount of freon, it should cool. To much freon as well will not cool as it should. Good luck,
david

 

When you say cycling too quick ---

How quick is too quick ?

What is the acceptable time for the cycle on off of compressor ?

MARK

 

check how much refrigerant you have to start with

 

freon is in the green - had approx 1.75 cans of freon
i checked the schrader valve on low side and it is good
the switch on the low side is working

 

what does "in the green" mean and how big are the cans? if it gets cold interittently the first things to check are refrigerant charge, clutch air gap and pressures

 

used a vac pump on the system to put negative pressure in the system
put in 2 two oz. ounces of compressor oil
put in 1.6 lb of freon
the guage I had was yellow low pressure
green correct pressure
red too much pressure

 

took out orifice tube cleaned it
replaced it

recharged with 2 cans of refrigerant

still not cool 80 degrees out vents

pressure is 25 Lbs to 70 lbs during cycle of the compressor

clutch is working

any ideas

 

NEVER FREAKING MIND
This is now fixed
Clogged orifice tube
I figured it out and fixed it
thanks for no replys folks
This group was pretty much useless in my case

 

well you have to have patience people don't just hover over the forums all day and people that do it all day at the shop dont always feel like being nice and giving away free knowledge that most people pay for.

Did your "cans of freon" have sealer in them? most of those crappy "top off" kits do and if they did YOU probably clogged the orifice tube, and if you didn't then you'll have bigger problems in the future or someone did a repair half *** in the past. A/C is a sealed system you shouldn't randomly develop a clog.