Phil_beeza
26-08-2011, 19:32
The starting performance has been 'iffy' for a bit, suspecting the alternator might not be charging the batt properly. Pretty sure the battery is known good. The 90 amp alternator is 8+ years, has a slight high pitch ball bearing noise if thats relevant, altho the timing belt has been replaced recently.
After long (1 hour+) trips, and then leaving the car sitting for a couple of days, its been flat/low more than once (britannia rescue job). Starting th car up daily and going for short trips, its been fine (including thro the snow)
After getting a low battery jump start from britannia rescue after 3 days, the batt was recharging at 12.75 volts.
(possibly related question)
After starting the car a few times the radio has 'gone off' when waiting at idle. I'd previously thought this was a loose connection on the fascia plate. I just had it now when i was driving along, at the moment I switched the headlights on. I'm wondering if anyone knows if the radio has a low voltage threshold, that I'm guessing the battery is going below, and its a symptom of a low alternator charging voltage. Could make sense.
Just got myself an incar voltage display
the boot amp head unit remote switch on wires are all set up ok.
After a short good journey just now at idle the charging read 13.2v approx
i'm happy to replace the alternator with an uprated one, just wondered if anyone had any ideas on this, thanks.
I've got less than 1000w rms in the boot, the only one of the big i havent done is alternator mount-> chassis ground. i do get lights dimming at loud bass hits, I've done long journeys with light dimming behaviour. poss not a great idea.
After long (1 hour+) trips, and then leaving the car sitting for a couple of days, its been flat/low more than once (britannia rescue job). Starting th car up daily and going for short trips, its been fine (including thro the snow)
After getting a low battery jump start from britannia rescue after 3 days, the batt was recharging at 12.75 volts.
(possibly related question)
After starting the car a few times the radio has 'gone off' when waiting at idle. I'd previously thought this was a loose connection on the fascia plate. I just had it now when i was driving along, at the moment I switched the headlights on. I'm wondering if anyone knows if the radio has a low voltage threshold, that I'm guessing the battery is going below, and its a symptom of a low alternator charging voltage. Could make sense.
Just got myself an incar voltage display
the boot amp head unit remote switch on wires are all set up ok.
After a short good journey just now at idle the charging read 13.2v approx
i'm happy to replace the alternator with an uprated one, just wondered if anyone had any ideas on this, thanks.
I've got less than 1000w rms in the boot, the only one of the big i havent done is alternator mount-> chassis ground. i do get lights dimming at loud bass hits, I've done long journeys with light dimming behaviour. poss not a great idea.