My 1.9 runs right in the middle pretty much no matter what� maybe 10 degrees hotter up a big grade.

But on long downhills, it goes quite cold, as if the thermostat is staying open.

Anybody know why?

Thanks!

   Eric
   Eric Wunrow Pictures
   303. 988. 8717

   VW@EricWunrow.com (for this list's emails)
   EW@EricWunrow.com (for private messages)

On Jan 22, 2018, at 5:24 PM, Christopher Schimke <christopher@T3TECHNIQUE.COM> wrote:

> Dennis, thank you for this tip. I have been fighting a cold-running WBX for
> a while now. Even an NOS VW thermostat did not curing the issue, but this
> Mahle thermostat did. Now I have full heat...as it should be.
> 
> Thank you!
> Christopher
> T3 Technique
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Dennis Haynes
> Sent: Thursday, January 4, 2018 11:53 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Thermostats especially in colder weather
> 
> Thermostat operation is a bit more complicated than it appears. The Vanagon
> system makes its operation critical as it really is a mixing valve set up
> and in colder weather with all of that reserve cooling capacity the response
> time also becomes an issue. After OEM t-stats became no longer available I
> found that many just don't respond consistently. Hard enough even finding
> ones that are correct. The Meyle brand was disappointing. I have been using
> Whaler for a long time. On this last rip down to Florida the Whaler let me
> down. I just installed a Mahle TX 24 87D. First road test, WOW! Granted it
> is now ~50 here and sunny. Up to temp, gauge needle dead center in ~3 miles.
> I will be stocking these. And man the heat works again.
> You can get them here.
> https://www.amazon.com/gp/product/B00D3DH4J6/ref=oh_aui_detailpage_o01_s00?i
> e=UTF8&psc=1
> 
> Dennis
>