Charging problem - MPI

[casbar]

Stumped. The battery doesn't seem to be charging, when the car is running. I have put a multi meter on the Alt, and I get 14 volts. I get 13 volts at the starter. But on the battery, I only get 12 volts with the engine running, and I would expect 14 ish there as well. Battery just runs down in a few days. The charging light comes on with the ignition and goes off when the car is started.

[Neil8p]

Had a similar problem on ours, solved it by adding an extra earth cable. I fitted it between the gearbox and the front subframe.

[Cooperman]

Yes, sounds like an earth issue. It's often the boot floor to battery negative
cable. You can check it by running a jump lead from the engine block to the battery neg terminal and then measure the voltage. That should give you an answer.

[casbar]

Thanks, I'll try that