starting/electrical issues

[jondee86]

All starters love a fully charged battery It seems as so you may have
had a high resistance ground. Testing voltages with the engine running or
off lets you know that you have continuity. But to test the performance of
the circuit, you need to do a voltage drop test. In the case of problems
with the starter, you need to check what the voltage drops to while the
starter is cranking i.e. with max current flowing in the starter circuit.

Test between the starter positive and ground....


This will tell you the voltage that is being applied to the starter during
cranking. You should be looking for a minimum of 10 - 11V and if it is low
(say 5 or 6V), then you need to check the voltage drop in the starter
supply circuit...


... and in the ground return circuit while cranking.


Ideally, you are looking for a voltage drop of not more than 0.25 - 0.5V
in these circuits... lower is better. Not trying to be a smarta$$ as all this
information is readily available on the interweb, and you have already
solved your problem. But there may be others who will find the diagrams
helpful when they are trouble shooting their own starting problems.

Cheers... jondee86