Hi everyone.

Am a new one and my first xj 2.7 2009

Bought the car and on the way home the battery went flat. I just bought a new battery and charged it up. Was reading 13.2 volts engine started and battery light went out. Then I turned every thing on about 5 mins later and left it ticking over. Checked the voltage and the battery was draining. Would seam the alternator is not working? I checked the 10amp number 30 fuse in the boot and that's ok. Left it over a few nights and the battery is down slightly 12.3v

What is the next check I need to do before fitting a new alternator? Is fitting one an easy job?

Thanks in advance

Andy

What voltage do you have at the battery terminals with the engine running?

Thanks for your reply.

First time it was so low the radio went off and the warming message come for loads of stuff.

 So it runs really low. 

Second was a full battery and I loaded it with everything turned on kept running till I turned it off at 12.7

 

Thanks for your help