so take it back to the "guy" and let him check the rear expansion valve for debris that can clog it- no flow through rear means no cooling. How did front oriifice tube look? rear is a parallel path- will have the same result.
'95 Chevy 3500 454 Dually 142,000 miles
'94 Chevy Astro Van 358,000 miles!
'86 Buick Park Ave 192,000 miles
'86 GMC S-15 Pick-up 150,000 miles
'92 Chevy Lumina Van - 265,000 miles- given to me to see how far it can go! all above are white!