Quote:
Originally Posted by Hit Man X
I had a similar issue on the 300SEL for as long as I owned it... the defrost would not fully shut, just partially. I would just zip tie it shut in the summer and remove the zip tie in winter. I became tired of this nonsense and had the PBU rebuilt. Same issue.
Pulled the solenoid block and that section plus one other would not energize (one ground, eight total connectors). Firm whack on ground corrected this, for a while. Then back to the same old ****. Bought a new one, $97 later, system works as designed.  Wished I had tried that a decade ago.  |
This thread showed up on my search. How did you go about zip tying the defrost vents shut? I have an 81 280SEL now and AC goes out front dash weak and defrost vents about the same. I wouldn't mind trying to zip tie them shut.
Thanks, Austin