Camo6
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Sounds like a tricky one. If you're confident the battery and alternator is good it must be drawing current at some stage when idle. Did you try the ammeter on the mA setting and if so did you confirm current flow until shutdown?peekaboo_jones said:Hey camo,
It's a Holden Adventra LX8 2003.
I disconnect the negative cable on battery and set my multimeter to ohms 10a.
Join the multimeter in series and leave for 5 mins to wait for system shut down. Zero current draw.
A mate has a Tech 2 and we checked the settings, someone had already changed **** down from 60 min to the minimum of 3 mins.
I replaced the alternator yesterday.
Just to tick it off the list. Kept the old one too as the new GM one was about 400 and cheaper than Bosch.
No BCM errors when we plugged the Tech 2 in. Although system has a limit on how many errors it can store.
Might be a dicky BCM but will be hard to prove without hard faulting the problem. Water in a plug or module perhaps? Bad earth or corroded lead? I remember the 3.8's were prone to this at the alternator terminal.
I used to work up the road from Pace Autoelectrics in Blackburn and would send our starters and alternators to them for repair. You could try them. Wouldn't hurt to give a Holden dealer a go too as they're usually aware of common issues that smaller workshops are unaware of. Hate intermittent problems like this.