Vauxhall vectra - Vectra Sri cdti

**Vectraman68** · 6th December 2018, 13:11

Hi hope somebody can help got the battery light come up on dash when driving home and stopped to see if beltchad come off but ok, got home and put code reader on and said p0621 generator lamp control circuit manfunction , could it be alternator as car runs ok even with lights on

**CLUB04** · 6th December 2018, 13:30

Pretty sure either your alternator is giving up or the battery has gone bad there mate

**Vectraman68** · 6th December 2018, 14:19

Hi thanks for reply just tested and with engine not running voltage at battery was 12.4 volts started engine and went to 13.5 volts put lights on and heater and voltage stayed the same and revved engine didn't go up

**Vectraman68** · 6th December 2018, 14:40

Hi thanks for reply just tested and with engine not running voltage at battery was 12.4 volts started engine and went to 13.5 volts put lights on and heater and voltage stayed the same and revved engine didn't go up

**CLUB04** · 6th December 2018, 17:35

Is it still starting/cranking over fine first thing in the mornings after being left overnight?

**Vectraman68** · 6th December 2018, 17:56

Hi yes still cranks over fine don't know about in morning as only came on today , but started ok earlier and drove about 50 meters and light came on , also does any one know if the 150 engine alternator same as 120 engine alternator thank club04

**Vectraman68** · 7th December 2018, 11:36

Hi went to car this morning and started first turn of key went for drive no battery light , went out and started it went for a drive again battery light came on , also rev counter was at 1100 revs on tickover so come home . If got an alternator in shed of a 1.9 8 valve astra if it will fit , is it safe to drive thanks

**CLUB04** · 7th December 2018, 12:13

I would check the earth connections as well, but as the battery is holding charge, it's most likely to be the alternator, in my opinion anyways
I don't think the ones form a 120 (8v) and 150 (16v) are the same, but I'm not 100% on that

**Vectraman68** · 7th December 2018, 18:43

Ok thanks I'll have look in morning as it was raining today , I put wipers on and they seemed really slow

**Vectraman68** · 8th December 2018, 12:14

Hi just took alternator off but cannot see anything the small black wire I tried undoing nut holding it on to alternator and it just keeps turning eventually snapped wire to get alternator off tried undoing it off car and just keeps turning on alternator