Date:         Wed, 2 Jun 2021 09:33:09 -0700
Reply-To:     Bruce Todd <beeceetee@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Bruce Todd <beeceetee@GMAIL.COM>
Subject:      =?UTF-8?Q?Re=3A_=E2=80=9CNew_temp_sensor_indicates_high=E2=80=9D_post?=
Comments: To: Dennis Haynes <d23haynes57@hotmail.com>
In-Reply-To:  <CY4PR0801MB3731C3399CF0B647F2E70BB1A03D9@CY4PR0801MB3731.namprd08.prod.outlook.com>
Content-Type: text/plain; charset="UTF-8"

Thanks for the reply Dennis - I do not have AC.  Typically the fan begins
to work this time of year and it is common for me to park the van after a
drive in warmer weather and to have the fan switch on after the ignition is
turned off.  Prior to recent repairs on the cooling system - the fan would
typically cycle when the coolant temp gauge had fully cleared the mid point
or the indicator light, say at about 60%.  I would say IMO - that the
temperature is hot enough to have the fan kick in based on recent drives -
and checking the heat emitting from the engine - not to mention where the
gauge appears to be reading at 75%.

OK - a few things to go on.  I have more cooling work to be completed -
replacing the small steel lines from the oil cooler to the t-stat housing
and to the water pump and all the small connecting hoses in between.  Will
get the fan sorted out at the same time.

Bruce

On Wed, Jun 2, 2021 at 9:07 AM Dennis Haynes <d23haynes57@hotmail.com>
wrote:

> Do you have AC? Turning it on will run the radiator fan. Under normal
> driving the fan should not be needed. Depending on fan switch choice, the
> fan is turned on after the radiator is saturated with heat and the outlet
> temperature is high enough to call for the fan. Usually this will also
> raise the gauge reading as the coolant temp leaving the engine will be
> higher due to the higher return temp. A coolant flow problem or bad
> radiator can also prevent the fan from cycling properly.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of Bruce
> Todd
> Sent: Wednesday, June 2, 2021 10:20 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: “New temp sensor indicates high” post
>
> So - I swapped out the new coolant temp sensor with the old one last night
> and went for drive in pretty warm weather - and the coolant temp gauge
> again climbed to the same position as the new one did - approximately 75 to
> 80% toward the top and well past the blinking light indicator...and no
> radiator fan kicking in.  I am beginning to suspect the radiator thermo
> switch is faulty.  So I can't confirm whether the new coolant temp sensor
> (from GW) is not calibrated correctly.
>
> Bruce
>