flickering lights rough idle

[pdrpaul]

hi looking for a bit of help. I have a slightly rough idle once rpms settle after warms up, I say settle but rpms fluctuate very slightly also have all lights on car flickering not real bad but noticiable only does it when idle... my battery is 12.5v on multimeter so its good and I tried with mates good battery to make sure got same problems. I then took voltage reading with car idling and it was fluctuating between 13.4 up to 14.1. but then when I increased rpm to 2k it was a solid 14.4 and dont budge till it went back to idle then lights flicker etc again. im geussing a bad alternator poss regulater/diodes. belts gd
and timing belt is tight with timing spot on. I have noticed a tick tick tick sound coming from alt area very fast ticking sound like a bad wheel bearing at speed. any ideas folks before I order up new alternator. earth connections etc seem good.

[raymod]

ive got the same problem on my corsa mate with the tick wheel bearing sorta noise from near my alternator if you get to the problem can you post what it is

ps ive never actually looked into mine

[pdrpaul]

will do mate. ordered up new alt and goinna have gd look around when changing it to see if there anything not right, got a feeling its voltage regulater,

[pdrpaul]

fitted new alternator today mate voltage is steady 13.8 and no flickering lights. almost certain it was voltage regulater idle is good now as well hope u sort urs out.