Hey, my buddy does refilling of the 134a that the trucks use for A/c and he needs to know how much pressure & the high temp they'er supose to run at.

Can someone please let me know so i don't fry my system when we do it

thanks

 

have you checked the manual for the truck- they usually list most tech stats for that type stuff- J

 

I work on A/C systems for a living, if you don't know what you are doing, you are better off having a trusted pro look at it.

 

Ditto, If he doesn't know what normal high and low side pressures should be, because they vary with ambient temperature, humidity, and other variables, then I wouldn't let him work on my system

 

By the sound of this, you and your buddy have no idea what y'all are doing.

Stop. Take the cans of 134a back to Wally World and get your money back. And pay someone who knows what they're doing to do this.

Pressures vary according to ambient temp, system demand, airflow across the condenser, underhood temp, etc. Pressures are used only to get a general idea of what the system is doing.