[TR] Not TR - MGB

[Dave]

It might be something as simple as the ignition switch.  What does the 
tach
do at this time?  (The MGB has an electronic tach and if the 
switch is
cutting out it should drop to zero immediately even if the 
engine is still
winding down.)  Also, does the heater fan and/or wipers 
cut out at the same
time?

I had a dodgy switch on my MGB (back in the day) and on my TR6.  And
I 
hear GM has had some issues as well.

Dave



-----Original
Message-----
From: Jonas Payne <jpaynepbr at cox.net>
To: triumphs
<triumphs at autox.team.net>
Sent: Fri, Aug 15, 2014 7:32 pm
Subject: [TR] Not
TR - MGB


I have a 1980 MGB in the shop with the original OPUS electronic
ignition.

When the car is warm and it gets on an incline, it suddenly quits
- no
coughing, sputtering, anything.  It then fires up after a couple
minutes and
goes along fine.

I'm convinced it is an ignition problem, but
clearly not the coil, 
wires or
plugs.

Car is in very good shape with no
obvious loose wires, grounds, etc.

The dist. is effectively 2 black boxes,
so I'm at a loss as to how to
diagnose it.

I can put in a 45D dist, new
points, condenser and coil for less than 
$150,
and put it back to 1972
spec, which is probably less than the time it 
will
take to try and diagnose
the other unit and at least at that point, I 
have a
system that somebody of
reasonable intelligence can sort out.

If anybody has any experience with
these things, your comments would be
greatly appreciated.





Jonas
Payne
PBR Consulting Services, LLC
702.882.6711

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