Date: Wed, 2 Nov 2011 19:41:54 -0700
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: it's cold in MT and my van won't start
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re
'don't do that' ....
for sure don't do this ........
"Ideally, I'd like to be able
> to go out, start it up and let it run unattended for 10 minutes to
> warm up (while I go back inside). "
yes, *do not* do that ...
very easy way to have it stall out rich ..
they don't like being fired up and left running ..
the engine does not warm up well since there is no load on it.
Yes, there is the Auxiliary Air Valve that ads bypass air around the
throttle plate, when first started ..that should make it idle a little
better/faster.
in my experience they don't work that well usually.
Heck, I have a subaru one I will try out sometime.
the way it works, is ..
cold, the rotary valve in the Aux Air Valve will be wide open..
it gets heated by 12 volts supplied to it ..
the temp sensitive spring inside it gradually closes the valve, reducing the
air being added around the throttle plate.
Notice it's by time ..how long 12 volts has been applied, and not by how
warm the engine is.
It's not a 'smart' system ...very crude actually.
the next system up , 2.1 waterboxer Digifant, uses an electronically
controlled air idle valve that most modern cars have a version of . It's
much more complex and controlled by a Control Unit that can be expensive...
but it works better.
your 1.9 Digijet EFI does not have a 'thermo time switch'.
Study the Bentley manual..
start with their checks on the Aux Air Valve if they have any.
also ..
about 3/4ths of the vans I work on, which is many ...
the idle switch is not making contact at idle.
there are two styles of throttle switches on an 85..
the 'early' with two crude looking swtiches hung on top of the throttle body
..
and the 'later' with the swtich under the throttle body ..
like it is on a 2.1 ...
make sure it's making contact at idle.
I find those out of whack *all the time.*.
and the usual ...spark plug wires, for example. ...especially if they are
very old.
and Temp Sensor II.
scott
www.turbovans.com
----- Original Message -----
From: "Roger Whittaker" <rogerwhitt1@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, November 02, 2011 9:06 AM
Subject: Re: it's cold in MT and my van won't start
dear ether DONT DO THAT
try tightening your v belt ..
that means slack off alt and use a bar to pull tight then retighten ...
you must use the the ancient german spec gü**tnticht
because i often work alone on my ride ... i use a piece of parachute chord
and tie that to a place on the body >opposite the alt and in a double so i
can use a short screw drive to tighten up by tightening the chord like a
turn buckle > then i retighten alt
vangon is always much happier after this ...
remember only gütnticht so you do not mess up millwrights carefull line up
of pully and engine crank
this is your mission jim if you choose to accept it
this message will not self-destruct in 5 seconds
regards
On Wed, Nov 2, 2011 at 8:37 AM, Jonathan Edwards
<edwards151@gmail.com>wrote:
> I tried to start up my '85 weekender this morning (19 degrees F in
> Bozeman) and she turned over fine and ran for a bit, then kind of
> bogged down and died. I repeated a few times with my foot on the gas,
> trying to keep the RPMs high but the same thing happened. I've noticed
> on other cold mornings (not this cold) that the van will start fine,
> but I have to keep my foot on the gas petal slightly to keep RPMs up
> or it will die, until it gets warmed up. Ideally, I'd like to be able
> to go out, start it up and let it run unattended for 10 minutes to
> warm up (while I go back inside). There is some kind of a cold-start
> valve that controls idle RPMs when the engine is cold, right? Sounds
> like this needs to be looked at? But that doesn't explain why the
> motor dies when I am physically there with my foot on the gas.
> There's also the "thermo time switch" - maybe that has something to do
> with my problem? I've got a Bentley, but have yet to have time to
> really get into it and understand how to use it. Any help would be
> greatly appreciated!
>
> Thanks
>
> Jon
>
--
roger w
From Proverbs:
Under three things the earth trembles, under four it cannot bear up: a
servant who becomes king ...
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