Question about 2000 Cadillac Catera

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I replaced 2 alternators in my 2000 catera...only when it rains does the car not start..the battery is dead as a door nail...can someone help?

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Make sure the car is not draining the battery while parked and shut off.
Place a meter across the battery, it should read 12 volts when charged up.
Start the car and it should climb to and read 14 to 14.5 volts. If it doesn't, then the alternator is bad.

Posted on Aug 25, 2009


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Does or did the check engine light ever come on durring all of this ? Or did the alternator light ever come on durring all of this? Jump starting another vehicle, damage to your battery I duoght it, damage to your Alternator and or other electrical componants highly possible if not connected properly.The new battery going dead again could cause all of the problems you have discribed for me. If I were you the first thing I would do is check the new battery and see if it has gon dead now. If so check to see if it is Frozen. If it is frozen you will half to replace it, because once a battery has frozen it will never hold a charge again.Once you have replaced the battery with a good known one (fully charged). Start engine and warm up to normal operating temperature and then disconnect the battery if the engine keeps running then the Alternator is fine . If the engine stalls then you need a new Alternator.A bad Alternator could have ben the problem from the start.I also live in a cold climate zone ( RedDeer, Alberta, Canada).Good Luck and have a good XMSS.

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Watch what they do and have them explain.

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