Quote:
Originally Posted by Monkey Wrench
I noticed in my 88 740 it ran all the time on slow, that one only has 2 supply wires ground and hot. I added switch to shut it off in summer. just didn't see any need for that to always be on..
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There is a federal safety regulation that requires positive ventilation at all times the engine is running. This requirement was put in place because too many people were dying of carbon monoxide poisoning when there was an exhaust leak. Modern cars are incredibly safe compared with '50's cars because when people die or are injured in significant numbers, changes are made to the manufacturing requirements in order to prevent future occurrence. Things like seat belts, airbags, collapsing steering columns, visibility requirements, braking systems, etc. were implemented because of dead people. My advice is don't get yourself dead by deactivating safety stuff.