I've posted this separately from my 'Ongoing Woes' thread as I'm being a
 bit more positive here and to narrow it to just TPS thoughts.  (Hope
that's OK.

The symptoms were that the engine died (and refused to restart for a
long time) as I accelerated having slowed for a roundabout.

I noticed last night without giving it any significance that when I was
prodding around the replaced plenum-to-inlet manifold pipe to show the
recovery man what I had done, that the idle speed changed (briefly).

I've been fiddling some more today and found that I could reproduce the
revs drop and then pickup and, best of all, actually make it stall by
flicking the throttle from the idle stop to just off idle.  If I
disconnect the Throttle Position Sensor I cannot make the engine stall
using the same process.

Engine (seems) to run happily without the TPS connected.

AIUI the TPS informs the ECU of fast movement of the throttle which
results in more fuel being supplied to provide greater acceleration.

What do you think?

Could a damaged track in the TPS cause these symptoms?

What about the period when I did start the engine but it raced at
between 2750 and 3000 revs with no throttle input?

I can pilfer the TPS from my 3.5 RRC.  I'm used to stuffing needles into
wires to set the TPS position on my bike and have a Fluke meter which
will display mV.

TIA

Richard