Date:         Wed, 6 Aug 2003 09:53:30 -0700
Reply-To:     Robert Keezer <warmerwagen@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Robert Keezer <warmerwagen@HOTMAIL.COM>
Subject:      Questions for you conversion experts
Content-Type: text/plain; format=flowed

If you know Motronic OBD 1 or you are familiar with these engines then this
is for you.

8 years ago I did a 1.8 91 Jetta conversion in my 82 Vanagon.

In 1999 I swapped to a 2.0, but kept the '91 FI system.

I had been fighting gremlins for about 8 months.

The gremlins told me I needed a new AFM.

But since I had the complete Motronic harness from the 95 Golf. I decided to
replace the entire FI system.
This system has advantages over the earlier one, including the on-board
diagnostics as found in the 93-later VW's etc.

I'm splicing the management harness from a '95 2.0 Golf into my Vanagon,
replacing the Digifant 2 system that I have been using since 1995 in my 82
Vanagon Westfalia with 2.0 Golf inline -four.

This conversion was done myself, but now that I'm stepping up to the next
generation of fuel injection called Motronic, I am making some discoveries.


Searching the net I encountered information that I did'nt have .

One was the road speed sensor, which had this been overlooked, the engine
would stall at rpms over 5,000.

115 hp is rated at 5400 rpm, so this had to be solved.

In the donor car, the Golf III has no speedometer cable, but a vehicle speed
sensor that sends a digital signal from the transmission.

This signal is needed for the speedometer to work, and several other
functions, including sending this road speed signal to the ECM, or engine
computer.

The solution is to get the RSS module from the back of a A-2 Golf-Jetta with
auto trans.
The back of the Vanagon speedometer has a little black plastic tab labeled
with the word "abgriff", German for 'pick-up" .This removable tab allows
installation of the RSS.

Inside the Vanagon Speedometer is a little flywheel with a magnet.As it
passes the RSS pick-up , a small current is generated- this impulse signal
goes to the ECM .

So this is where the RSS pick-up or sender fits from the A-2 VW.

All that has to be done here is attach three wires to the pick-up and run
them to the engine harness.

A question I still need an answer for is an electrical diagram I found shows
a oxygen sensor control unit.

What is this?

Also, does anyone know if there is a site where I can get a electrical
diagram for a 1995 Golf?











Robert
1982 Westfalia

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