Date: Sun, 4 May 2014 09:05:16 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: 1987 Syncro Cooling Issue
In-Reply-To: <001101cf66fb$cdaa0590$68fe10b0$@salicos.com>
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The air conditioning can operate the fan is two speeds also. Sitting in traffic the condenser will heat up and raise the pressure on the high side of the compressor. The fan turns on at ~250 psi. There are actually three speeds. If the radiator is calling or the high speed, (very loud) then you most likely have a radiator problem. The AC calling for that middle speed is very common and helps with the AC's efficiency. Also, if your temp indicator is staying well below the LED you could be getting a bad gauge reading or you have a bad-wrong thermostat. When all is well the needle will sit at least center to just above the LED.
Dennis
-----Original Message-----
From: Mister Tom [mailto:TomsGroups@salicos.com]
Sent: Saturday, May 03, 2014 2:16 PM
To: 'Dennis Haynes'; vanagon@GERRY.VANAGON.COM
Subject: RE: 1987 Syncro Cooling Issue
Sorry I didn't mention that the low speed fan works great.
I let it idle to warm up on a warm day and the low speed fan cycles on and off, as I would expect.
It's just in traffic, the high speed comes on if I have to sit for a few minutes.
Tom
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> Behalf Of Dennis Haynes
> Sent: Saturday, May 03, 2014 10:51 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: 1987 Syncro Cooling Issue
>
> If no low speed then you need to check the switch or most likely the
> resistor behind the driver side head lights.
>
> Dennis,
> From my phone.
> ________________________________
> From: Mister Tom<mailto:TomsGroups@SALICOS.COM>
> Sent: 5/3/2014 1:07 PM
> To:
> vanagon@GERRY.VANAGON.COM<mailto:vanagon@GERRY.VANAGON.CO
> M>
> Subject: 1987 Syncro Cooling Issue
>
> The high speed radiator fan comes on before I expect it when I am
> stopped in traffic.
>
> This can occur well before the needle hits the LED.
>
> The system will run with needle in the middle of the LED on warm days,
> so I think the gauge is good.
>
> I have replaced the fan switch and it acts the same.
>
>
>
> I have a bleeder valve on the radiator, with a tube into a jug of
> water. The system doesn't push air out, just coolant.
>
>
>
> So I am asking if the radiator itself can go bad in some way where the
> fan switch sees hotter temps than the circulating coolant?
>
> I didn't think the radiator would trap air any place except at the top.
>
> And then. it doesn't happen all the time.
>
>
>
> Thanks for any help.
>
>
>
> Tom Salicos
>
> '87 Syncro Westy w/EG-33
