Date: Tue, 7 Jul 2009 13:12:09 -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: speed sensor (subie conversion question)
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Ditto on what Larry A says .....
and ........I'm wondering if you are operating your tach off the soobie ECU
tach signal ....
which many do ..............which I don't think is the best way ......since
a vanagon tach is a 'traditional electronic tach' built to be operated off
the primary ignition circuit .........aka 'diode tree' in our soobie
conversions.
IF that's the type of circuit you have operating your tach ( I have read
that only earlier tachs can operate off the soobie ECU signal ......
so it IS much more helpful......if people give ALL the info they can about
what vehicle/engine they are asking about. What year and version vanagon,
what year and Subaru engine type ......all that matters and can help people
help those posting questions about their set up ....obviously , duh. )
anyway .........what pops into my mind about this only goes to 1,200 rpm is
that if it's a diode system .......perhaps a diode or two isn't making
contact.
Do you have some VSS device on your trans ?
could be they messed that up a little. Did you look under there ?
is your EJ22 an OBD-II one ? I believe it will have one large single
exhaust port on the bottom of each head, as an obvious identification
feature if it's OBD-II or 'second generation EJ22 ' .
I 'think' those need a VSS ............though the last one I had running
just great, a 98 Imprezza OBD-II 2.2........ had a semi- mickey mouse VSS on
it when I got it .........( the sender gizmo for cruise control at the back
of a vanagon speedo ) .....and that's not suppossed to really work that
well, but it sure ran great !
Idled great, everthing ..........so your engine may indeed need a VSS, or
perhaps it can get by with something sorta iffy.....others could comment
more usrefully perhaps.
But always inspect any shop's work. The minute you get home.
I don't mean to sound like a raggy broken record about this ......but I
would have to say, based on what I see in the vanagon world, about work done
on them, it's not safe to assume at all, that the work was done carefully.
So I'd be checking around first thing. If I wrote a book about all the
dumb workmanship things I've seen in a 40 + year career in car repair, it
would run many, many volumes. So I suggest never assuming the work was done
correctly actually, sorry to say. Always check, first thing, is my advice .
I've seen techs leave shop rags INSIDE engines .......and a hundred crazy
things like that . Heck, sometimes it's as obvious as a wire hanging down
below the car or van.
have fun !
Scott
----- Original Message -----
From: "Larry Alofs" <lalofs@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, July 07, 2009 6:26 AM
Subject: Re: speed sensor (subie conversion question)
The speed sensor tells the ECU how fast the car is moving across the
ground. The tach tells you how fast the engine is turning. These are
two rather different things.
There is no obvious reason that a transmission replacement should
affect the tach at all.
You know, Scott would certainly want to know what year your van is, etc.
:-)
Assuming you are using the VW tach, info about it was connected would
be helpful.
Larry A.
On Tue, Jul 7, 2009 at 1:09 AM, Troy<colorworks@gci.net> wrote:
> After having a rebuilt transmission put in last Thursday, I noticed that
> my tachometer does not go above 1200 RPMs. I am assuming this has to do
> with the speed sensor not being installed correctly, but just wanted to
> confirm with someone who has done a Subaru conversion. I have a 1995, EJ22
> and believed the speed sensor was needed was needed after 1994. Scott?
>
> Thanks,
>
> Troy
>
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