At this point I'm sure I have R134a, and that the clutch is engaging when I turn on the AC. So, in tackling this myself, the pressure gauges you mention are the first step VS a leak test? Are these something available at the parts stores?

The manual has a thorough trouble shooting guide using the pressure gauge method, but no leak test details - though they mention looking for leaks. I'll certainly check to see iif there is anything obvious first.

Thanks guys.


Francis E. Abate
'95 Trooper
'98 MB ML320
'70 MB 300SEL 6.3