Posted by 550Doug on September 27, 2020 at 14:11:12 from (204.237.56.195):
My 2003 Buick Park Avenue has a parasitic draw that I've traced to the ECM by eliminating fuses. However, I understand that there are some items on the car that are not fused and would show the same symptoms. Also, it may be possible that a blown diode in the alternator could be the culprit. In any event, it's been sitting for a week and so when I jumped into it last night it started right up and I picked up a pizza and returned home, a 10 minute job. I noticed the battery volts were reading 13.3 to 13.5v while I was driving. However, when I turned off the car the ignition key would not release from the switch. I left the key there.
Today I went to start the car and there was no power at all. My voltmeter measured 4.5v across the battery terminals.
How can a good Interstate battery (only 11 years old) die so fast? Could this be a possible bad diode in the alternator?
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Today's Featured Article - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
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