Was no pressure on hi side with the compressor engaged/engine running? What about with engine off? Static pressure of 134a in the summer should be a a few psi higher than ambient temp in F and should be the same on both the hi and low side.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked