Question about 1998 Jaguar XJ8L

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Battery drain on a 1999 Jaguar XJ8

I have a problem with my battery draining rapidly on my 1999 Jaguar XJ8. The battery test good as well as the alternator. I took the car to one of those auto part stores and they ran diagnostics on the car. While the engine is running, the current draw on the battery is greater than the alternator can generate. Any idea where I should start checking? Is there a common grounding problem with the car?

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I seen this same problem with a Toyota Tacoma.the starter was drawing the battery down all the time .we replaced the starter with no more trouble.

Posted on Jun 18, 2009

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Posted on Jan 02, 2017

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all should have no more than 14.5v during a charge(engine running) anymore it will fry not only the battery, but other componets as well.

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Hi Darrin

Try disconnecting the battery + & - terminals.

Turn the ignition key several times to erase the computers memory.

Reconect the battery + terminal then - and start the car.

Your fault code, will hopefully not return.

Good Luck !

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