Mark
Have you checked the ballast resistor? If it is loose inside, the
resister coil could bounce around short or arc to ground. The Tach is in
the same circuit with the ignition so something there probably cut out.
Loose or bad connections here will hurt you. You should check all
the wires and connections from the ignition switch to the distributor.
Also make sure the chassis ground to the engine block is in good condition
and your battery ground is good.
Ron Fraser
When my Tiger had a fuel problem it would start and run just fine
but it would soon not be able to go over 60 mph.
The crud in the fuel line must have relaxed briefly so there was better fuel
flow until I drove it up to speed.
-----Original Message-----
From: owner-tigers@Autox.Team.Net [mailto:owner-tigers@Autox.Team.Net] On
Behalf Of CoolVT@aol.com
Sent: Wednesday, May 30, 2007 5:46 PM
To: tigers@autox.team.net
Subject: Driving me crazy Tiger
Thanks to all who have suggested ideas on my poorly running Tiger. I will
state again what has happened twice. The car starts and runs normally.
The
first time after 10 minutes of city driving speed and the second time at 20
minutes of city driving speed the car suddenly feels like it's running on 3
or
4 cylinders. When this happens the car can drive along a slow speeds and as
long as the road is flat and there is no attempt to give it throttle, it
will
cruise along smoothly, but with absolutely no power. Feels like a little
lawn
tractor.
Try to give it some gas and it stumbles and coughs.
On both occasions I limped home and the next day the car started right up
and ran normally. The two times that it acted up the temperature was in
the
70's or 80's.
Car is a basic 260 with Petronix ignition and coil.
Many have suggested problems with gas, but if the carb or fuel lines or
fuel
pump were messed up, would it start and run correctly the next day? I
don't
see how a carb or fuel filter is going to clean themselves. And when the
car
first goes into the "no power" mode, there is no sputtering like it's
running out of gas.
Two people have suggested that it might be a coil that is overheating and
cutting out. I'm beginning to wonder if there might be something to that or
some other electrical component. There definitely wasn't any great under
hood
temperature in the short drives, but could there be enough to cause
something
in the ignition system to over heat and act up? The ignition wires are a
few years old and have about 5,000 miles on them.
So, if there is a possibility of a bad coil, is there a way to bench test
it
and maybe throw it in an oven to heat up and retest? I could swap to a
known good coil, but I hate getting stranded or having to limp home if I'm
off at
some distance. Checking things along side the road isn't my favorite thing
either.
One last crazy symptom?? When it was acting up the last time, I looked
down
at the tach and it was at zero. After about 30 seconds, it began working
again. Not sure if this is related or not.
Thanks for all the input.
Mark L.
http://www.aol.com.
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