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Re: Vacuum Advance [message #65914 is a reply to message #65853] Sun, 29 November 2009 08:25 Go to previous messageGo to previous message
rgleas is currently offline  rgleas   United States
Messages: 48
Registered: May 2009
Location: Tulsa, Ok.
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The TVS switch being mounted on the return housing is sensing tempature and will not know when the engine is at idle vs. wide open throttle. Logic would dictate that this switch is dealing with a hot vs. cold engine situation. I would also believe that it was an emmissions situation.

Having work on many engines with out all of the smog adaptations less advance on a cold engine will make it run smoother during warm up.
 
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