Air Conditioning problem
2003 Chevy Express V8 Two Wheel Drive Automatic 67000 miles
This Van has front and rear A/C. The rear air vent output temp 70 degree. Front air vent 67 degree with A/C set to max and fan on high. Ambient temp 77 degree. Manifold gauge readings.
Static reading after engine has been off for 20 minutes Low - 78psi High - 120psi.
1 minute after startup Low - 45psi High - 120psi
After running 10 minutes at idle Low 40psi High - 125psi
All readings taken with A/C set at max and fan on high.
I watched the compressor clutch and it didn't kick out while the engine was running. Any ideas as to what could be wrong? Thanks