Date: Sat, 27 Jan 2018 14:17:20 -0700
Reply-To: Eric Wunrow <VW@ERICWUNROW.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Eric Wunrow <VW@ERICWUNROW.COM>
Subject: Re: Thermostats especially in colder weather
In-Reply-To: <BL2PR20MB0707D5019A0BC7E0778CBCD5A0E10@BL2PR20MB0707.namprd20.prod.outlook.com>
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Thanks, Dennis!
So is there a fix for this?
I ask because having a full load on a cool engine can't be good for it — or doesn't seem like it, anyway.
Eric
Eric Wunrow Pictures
303. 988. 8717
VW@EricWunrow.com (for this list's emails)
EW@EricWunrow.com (for private messages)
On Jan 25, 2018, at 2:46 PM, Dennis Haynes <d23haynes57@HOTMAIL.COM> wrote:
> On the 1.9L engines the closed throttle fuel injection cut off is quit aggressive, as low as ~1,300 rpm. It is why base settings are so critical to avoid that at idle surge. With the fuel cut off, no combustion, the heater cores taking heat out of the coolant, and air still being pumped through the engine, the engine will cool off, quickly. Some engine set up do this as a back up plan in the event of a cooling system failure. Alternate cylinders between combustion and just pumping air to keep it going.
>
> Dennis
>
>
>
> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> on behalf of Eric Wunrow <VW@ERICWUNROW.COM>
> Sent: Thursday, January 25, 2018 1:37 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Thermostats especially in colder weather
>
> 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://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.amazon.com%2Fgp%2Fproduct%2FB00D3DH4J6%2Fref%3Doh_aui_detailpage_o01_s00%3Fi&data=02%7C01%7C%7Ca1c285ffe7b74edf689808d563be29d4%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636524590758470458&sdata=bQ25DwMuPH47FoJoEDT9XgmKN%2BYcTnD07pnB26zgDyM%3D&reserved=0
> > e=UTF8&psc=1
> >
> > Dennis
> >
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