Date: Sat, 5 Mar 2011 11:19:39 -0800
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: Overheating problem 91 2.1
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Naturally you have to go for the t-stat ..
at least remove and test ..for any weird thing like this.
somehow I end up with boxes of waterboxer t-stats ..
I just test about 4 at a time ..
put the ones that open too soon, or way to late , in the metal recycling
pile...
and the good 87 C ones ..
I like those just fine...german ones that is.
I put in an 80 C one recently ..just to see what it would do ..
temp needle runs just to the low side of the LED ..
cooler than desired for winter or early spring ..
if you ever do get hot engine and cold radiator ..
( and you know it's not the t-stat or a leak somewhere .) .
you start to think about exhaust gases getting into the coolant at the
heads/head gaskets .
when that happen .
no coolant will circulate ..
it looks and acts just like the main pipes are blocked ..
but they are not ..
it's that exhaust gases displace the coolant in the engine ....and it
overheats.
This syndrome can happen ...'just barely' and thus be illusive,
or it can be intermittent .
I hope you don't have that going.
but always go for the t-stat first on any running hotter than desired,
first.
it's nice n' easy on the 2.1 as long as the screws on the t-stat cover
unscrew properly.
Scott
www.turbovans.com
----- Original Message -----
From: "Jim Felder" <jim.felder@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, March 05, 2011 10:15 AM
Subject: Overheating problem 91 2.1
>I have been having a nagging overheating problem over the last several
> months that has led to the replacement of a heater valve, two
> reservoir caps, hoses and a number of clamps. While I have fixed
> several leaks that were showing up after some near overheating events,
> and right now it is not leaking a drop, the problem persists. I have
> done lots of work on diesel and waterboxer vanagons I have had and
> have never had a persistent overheating problem like this.
>
> When I start the car from cold, the temperature needle climbs steadily
> and slowly up past the middle through the 3.4 mark, no matter what.
> Top of radiator, which spews coolant and not air when opened, is cool
> to the touch. Thermostat? I will gamble the money and replace it next
> week when I can get a good one.
>
> Jim