Hot positive battery feed.
Discussion
What could be causing this? The AA bloke suggested the starter motor, which is shorting and drawing more current causing the positive battery lead to heat up, which was causing my retstart problem.
Could this be the starter? Can ran perfectly (apart from PAS hose!) Once running, but then had issues starting again.
Any ideas?
Could this be the starter? Can ran perfectly (apart from PAS hose!) Once running, but then had issues starting again.
Any ideas?
SILICONEKID350HP said:
The battery cables are under sized ,just replaced mine with massive cables ,the ground cable from the engine to chassis had perished in side,replaced with one twice as thick ..
They all want replacing .
Something of a massive sweeping statement there ... sure, you get *LESS* voltage drop with heftier cables and, if you are moving the battery, then you ideally want to fit thicker cables to compensate for the greater voltage drop over a longer cable run but the standard fit cables are adequate for their purpose.They all want replacing .
If you are having to change cables to resolve an issue then the issue is not the cables themselves unless physically damaged.
Phil
In my opinion the original cable is a bit weedy for it's considerable length.
It also resides draped over the bell housing at the back of the engine, where its rather hot and there's no airflow.
Remember literally thousands of heat cycles over the years will do the cable no good at all, and when it is hot the resistance will be far higher too.
When I removed mine it had certainly seen far better days, it had gone crunchy in places when you flexed it and was proved to be a cause of high resistance when I tested it.
No surprise really given it's relatively light gauge for the 2.2 meter length, not to mention the environment it's been living in for over 16 years.
If the OP's battery cable is getting hot and the starter is slow, there is definitely a high resistance somewhere in the circuit, but that doesn't mean it's definitely the starter cable.
If you run a long jump cable direct from the positive terminal on the battery to the back of the starter and the problem goes away you'll have your answer.
If it fails to solve the slow starter then try running the jump cable from the negative terminal to one of the starter motor bolts, if that solves the problem it's an earthing issue.
I sorted my sluggish/non starting when hot with a combination of a new heavier gauge starter cable and a second additional earth from the negative battery terminal to the block.
It totally solved the voltage drop at the starter, and I've never had the problem since.
It also resides draped over the bell housing at the back of the engine, where its rather hot and there's no airflow.
Remember literally thousands of heat cycles over the years will do the cable no good at all, and when it is hot the resistance will be far higher too.
When I removed mine it had certainly seen far better days, it had gone crunchy in places when you flexed it and was proved to be a cause of high resistance when I tested it.
No surprise really given it's relatively light gauge for the 2.2 meter length, not to mention the environment it's been living in for over 16 years.
If the OP's battery cable is getting hot and the starter is slow, there is definitely a high resistance somewhere in the circuit, but that doesn't mean it's definitely the starter cable.
If you run a long jump cable direct from the positive terminal on the battery to the back of the starter and the problem goes away you'll have your answer.
If it fails to solve the slow starter then try running the jump cable from the negative terminal to one of the starter motor bolts, if that solves the problem it's an earthing issue.
I sorted my sluggish/non starting when hot with a combination of a new heavier gauge starter cable and a second additional earth from the negative battery terminal to the block.
It totally solved the voltage drop at the starter, and I've never had the problem since.
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