I believe the radiator fan runs at a certain temperature, and that the high speed comes on at a still higher temperature. Yes, it is tied to the air conditioning (if applicable), so that it runs all the time if the air conditioner is on. mcneely ---- Project Pat <psdooley@VERIZON.NET> wrote: > The rad fan is triggered by the AC on most vehicles. > Check the wiring diagrams to confirm. > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of > TCollins > Sent: Thursday, May 01, 2014 11:56 AM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Radiator fan switch wierdness > > I wondered about that too. Since the fan does trigger from time to sporadic > time. > > Would any other switch trigger radiator fan operation? > > > On May 1, 2014, at 11:22 AM, "Project Pat" <psdooley@verizon.net> wrote: > > > > Just a wild guess, you may want to take it out and check for buildup. > > Junk on the coolant side of the switch could insulate it and cause delayed > > reaction. > > -- David McNeely |
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