Quote:
Originally Posted by sixto
I did but I'm looking for more. IIRC the manual heater valve is a fixed restriction while the monovalve is something like PWM. I would think PWM can respond more quickly. Maybe the PWM acts too quicly (are there slow acting solenoids?) so steady state is never achieved without increased upstream pressure.
Sixto
87 300D
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Monovalve is not PWM. duty cycles of 1 sec on 1 sec off is not PWM. Don't know when that myth was started.
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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
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