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Join Date: Dec 2016
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964 Fire

Please Help,
My battery on my 92/964, died and I installed a new OEM batter, when I went to turn the key nothing happened. I left the key turned to the right while I checked the battery cables to ensure they were on tight then I smelled electrical fire lifted the rear hood to find my generator on fire. Besides taking it to a specialist, any suggestions or reasons why this happened?
Old 11-15-2017, 01:23 PM
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Ugh, did you connect the battery backwards ?
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Old 11-15-2017, 01:27 PM
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No, I didn't connect the battery backwards.
Old 11-15-2017, 01:35 PM
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Maybe the positive terminal cable was touching the body?
Old 12-01-2017, 05:50 PM
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Are you sure that the alternator wasn’t the culprit all along? Nevertheless, maybe you fried the diodes in the alternator possibly by grounding the alternator wire when making adjustments with the system under load?
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Old 12-02-2017, 02:02 PM
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That sounds more like the engine harness grounding as has happened on most if not all early 993's.
The answer is to replace the main engine harness which includes the alternator ,starter and oil
pressure functions .
This occurred so much the '96 year and earlier had recalls of this harness, when I removed the
alternator on my TT the power + and ground - wires shielding was crumbling and the car
constantly ran the battery down ..
Replaced for free twenty some odd years on by the dealer , Bert
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Old 12-02-2017, 06:40 PM
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