Mine took a good 3 big cans of 134, as i was charging it the guage was in the red zone, i figured with my luck it would blow up. But after i removed the last empty can the gauge went back down to the green/blue area and it was frosty cold in the cab when i got it... so cold that i had to roll down the windows and it was 95 outside.

 

so How can I fix this?

 

where's the frost, between the condenser and receiver dryer or between the R/D and the expansion valve? is it in the middle of a hose or directly after the receiver dryer?

 

there is one tube coming off the front condenser and it is cold all the way up to the firewall and I don't know where it goes from there in to the dryer or the inner condensor. I couldn't even find the expansion / control valve.