[greenskeeper79]

Just redid the A/C on my car, now going to take a look at the truck.

It blows cold air, but doesn't seem to be as cold as it used to be.

I have all the gauges needed as well as a vacuum pump.

If I hook up the gauges, what are some good numbers to be seeing?

Am I better off evacuating the system and re-charging from scratch? If so how much refrig does the system hold?

 

[greenskeeper79]

readings are 110/110 static

60/290 running, seems a bit high using the 2.2-2.5 rule of thumb

 

[444-4D]

.... using the 2.2-2.5 rule of thumb

I've never heard of this. What is the 2.2-2.5 rule of thumb?

 

[greenskeeper79]

I've never heard of this. What is the 2.2-2.5 rule of thumb?

high side should be no higher than 2.5 times ambient temp, or within 2.2 to 2.5

90x2.5=225