Hi folks,
    I did the following test on the Temp 2 sender: With engine off and cold,
resistance across the sender was approx. 5k ohms. This was the same checked
at the Digifant multi-pin connector.  I disconnected the wires at the
sender, attached the ohm meter and started the engine. Over the next five
minutes or so, resistance dropped steadily as the engine warmed up. Probably
because the sender wasn't connected, the idle never ramped down, sticking
steady at 2k.  I turned the engine off when it reached 600 ohms.
    Even with out having any temperature readings, can I figure that the
Temp 2 sender is behaving properly? Starting it later with the sender
connected, the idle ramped down to norm after warming up, so the ECU must be
doing something with the information.
    Of course, doing a test doesn't change how it runs. I had a look at the
Hall sender- voltage  supply is fine, and I patched a frayed wire going the
the center contact. One more test to do on that section, but will need a
helper. (thanks for the tip, al jordans).
    I want to check the fuel pressure regulator as well. Is there any test
possible without a pressure gauge?  I'm starting to love the Bentley, but
get a little annoyed with VW proprietary tools.
    Also, does anyone have test methods for the temp 1 sender that goes to
the dash? Its down the line a little, but I'll want to know how hot it is
when I get the mixture right.
    Thanks for the clues.
                                                Matt Sutton