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747 Posts
Have you ever heard the starter wind down after a non start? What I mean is how does the starter sound spinning down with no load?
At 13 years I would be surprized if the starter isn't all or at least a large part of the issue.
Have you ever tried to jump the hot wire terminal with a screwdriver?
If you jump it with a screwdriver and it doesn't crank or seem logey, run a set of cables from the battery to the starter and bat neg to a good ground and repeat the test.
If the starter cranks fine remove one cable or the other and repeat to determine if it's a cable or bad connection.
This assumes the battery passes a load test.
Once had a starter on a 318 wear the bushing until the commutator contacted the field. The starter worked ok but took the battery down pretty good each time. The battery was newer so it survived but we needed to change the starter.
At 13 years I would be surprized if the starter isn't all or at least a large part of the issue.
Have you ever tried to jump the hot wire terminal with a screwdriver?
If you jump it with a screwdriver and it doesn't crank or seem logey, run a set of cables from the battery to the starter and bat neg to a good ground and repeat the test.
If the starter cranks fine remove one cable or the other and repeat to determine if it's a cable or bad connection.
This assumes the battery passes a load test.
Once had a starter on a 318 wear the bushing until the commutator contacted the field. The starter worked ok but took the battery down pretty good each time. The battery was newer so it survived but we needed to change the starter.