Date:         Sat, 15 May 2010 11:21:09 -0700
Reply-To:     neil n <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         neil n <musomuso@GMAIL.COM>
Subject:      OBD Light On/Off at Higher Speeds (Jetta swap)
Content-Type: text/plain; charset=ISO-8859-1

Hi all.

On my last trip to OR, during a nice stretch of windless highway, I
tested Jaco at higher sustained speeds. 70-75 MPH. (110-120 KPH) This
was the first time @ 75 MPH sustained. Ran fine, but check engine
light (OBD) did this a few times: short on/off, pause, short on/off,
then nothing. Hadn't seen this before. Of note, no CEL light present
from factory, but pin present at ECU. I ran a new wire:
http://sites.google.com/site/tubaneil2/AddMIL1.jpg No obvious flaws in
my wiring BUT, CEL has always glowed *faintly*, engine on. Factory CEL
bulb is incandescent. I'm using an LED. I suspect this is why it's
glowing.

There is no VSS installed on this swap. Engine runs fine but....

Would the OBD flash the CEL light at higher sustained speeds due to a
lack of VSS?

Thanks, and hopefully I'm not to far OT in terms of list content!

Neil.

--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines