Battery dies on 1997 jaguar xj6 with new alternator

need to run a scan on it

Sounds like your alternator is not charging the battery,if you can go to Autozone and they will check battery and alternator for free.

have you checked the alternator. so when you put in the new battery you get nothing . thar is the alternator. my link to my garage https://www.facebook.com/TedsRepairs

The battery light has nothing to due with a bad battery, it indicates the alternator is not producing enough voltage to keep the battery charged up, this can be for many reasons.

It is part of the alternator it is called a regulator. This regulate the voltage that charges the battery. If that regulator goes bad, you end up with overcharging which is dangerous and can blow up the battery, or you end up with a car that has a short and not charging.

crank relay on the front pulley or ignition module under the coil ,it has to one or the other

change the alternator or strip and put new brushes in the alternator

Does it crank well and all that but with no spark or is the battery just dead? If the battery is dead, it either won't charge while alternator is spinning or the alternator doesn't charge well enough to keep the battery charged well. If it jumps and runs indefinitely, battery is done. If it jumps and dies, alternator is done. If battery and alternator are fine, and you have no spark, you may need a new coil, new spark plug wires if they are worn out and too resistant, pick up coil inside of distributor, or you may have some other ignition system issue.

Most times when an alternator fails, it starts charging less and less till the car won't keep running or it won't start the next time. If the alternator hasn't failed, the battery needs replacing. If your battery is 5 or more years old this is a very good possibility. If your alternator failed and you have killed your battery many times before replace them both. Each time you drain a battery to dead you lose about 10% of its current capacity.

If the battery is fine and engine will not turn, starter may need replacing. Hope I helped.

check your suppression module. driver side front close to alternator. It control how the battery charges the alternator. If you battery goes dead, after charging lock doors until alarm activates and you are now ready to star your car. [email protected]

when you battery goes dead, the security system locks the car. When you charge the bathery, use the key to lock the door and hold until the alarm activates. open your door and you can now start your [email protected]