The "limp mode" you describe (always in 3rd gear) is an issue with the TCM.
I'm no expert but I doubt the ECM would cause that to happen. The TCM will
signal a fault (shift indicators all black) from overtemp - not sure about
going into limp mode though.
The TCM reset procedure (as describe in this message
) is:
1. Turn on the ignition, without starting the engine.
2. Turn the ignition back to the off position.
3. Turn ignition on again without starting the engine and depress the
accelerator all the way to the floor, holding the pedal there for a
minimum of ten seconds.
4. Release the accelerator pedal and then start the engine in the regular
manner.
5. Drive the vehicle making sure that the transmission shifts through all
four gears.
Good luck!
Jim
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On Sun, Aug 28, 2011 at 6:59 PM, Bill Waelder <bwaelder@...> wrote:
Did you disconnect both battery cables (pos and neg) and then hold them
together?This is the manual reset method. Just making sure that you are not
just removing one cable as this will not reset it. You must disconnect both
and hold them together for a minute to discharge the ECM. There should be a
shop there with VAGCOM scan tool with a 2 way adaptor for reading obd1
codes?
--- On Sun, 8/28/11, Duckdive <duckdive@...> wrote:
From: Duckdive <duckdive@...>
Subject: [ev_update] Re: on th road to reno woes ... help
To: ev_update@...
Date: Sunday, August 28, 2011, 11:13 PM
So it seems that I'm stuck in Reno with now way to clear the Limp mode from
the ECM/ECU. Nor can I get the codes. I cannot find anone with an OBD for
a 93 VW. Only OBD 2s.
Is there anyway to clear the ECM manually? I tried by unplugging the
battery again for another 1 minutes.
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