Ac not blowing cold when driving on highway. 2006 scion XA with a fresh r134a recharge. Ac blows cold idling and around town, but when driving on highway (>50mph) ac blows totally warm. Cools down within 1 minute after slowing down. Any thoughts?
I just put it on a set of manifold gauges. I checked the pressures at idle and when revving high for a few minutes to simulate highway driving when the problem occurs.
- (idle) 35psi (L) 200psi (H)
- Max pressures (when revving to ~3k rpm for ~2min) 62psi (L) 245psi (H)
- Min pressures (when revving to ~3k rpm for ~2min) 23psi (L) 165psi (H)
These are slightly higher than the manufacturer spec I pulled from the shop manual I have.