Hey all,

Firstly I just want to say thanks to everyone who contributes here. The resources are so valuable! Apologies if this has been covered but I have scoured the pages and couldn’t find anything.

I recently carried out a tonne of work on the engine including valve stem seals and the alternator bracket gasket replacement since this I am having what I think is a voltage/charging issue. Took it for a drive and got trans fail safe error, radio turning on and off, seatbelt warning light (even though seatbelt was fastened) the car also won’t start from battery but will from a jumper pack.

So far I have swapped out to a new battery old one was at 8v and not charging and run some very basic tests
Tested continuity across all fuses with multimeter - all were fine
New battery voltage is 12.5
Battery voltage when running is 14.4 at the front jumper points
Also managed to test the voltage at B+ post on alternator and was 14.4
Battery voltage is 12.4 but decreases when idling until eventually the car stalls
Idle rpm is 700 which I believe is normal
Since this has happened I’ve run a scan and there are now 4 errors coming up on the DME they weren’t there before (see image)

I’ve read a tonne about this possibly being my alternator, I might be wrong but since it’s giving out over 14v at idle I’d assume not als possibly the ignition switch - I have a replacement coming in a few days so will swap that out and see

Am I right in assuming these issues seem to be electrical/low voltage? Is there anything else I should investigate test out?

Appreciate your help

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