Ive Recently had my Alternator give up, there isnt any Markings left visable on the current alternator and i see you can get both 90a & 120a Alternators.
Im Struggling to find any information on which is requied for a 1.9TDI 2005 and wounder if anyone know what is the recommened size

From memory my folks mk1 1.9tdi had 90amp but it was fairly basic with no extras so current load was fairly low. Check its not a clutch pulley as I think the diesels had them where as far as I know petrols didnt

Alasdair

@Dibble2 As @Alasdair1 implies, it could be the alternator clutch.

I suspect something else though, so does the battery light illuminate when you switch the ignition on?

No the light Dosnt Come on, the Belt was Squeeling and the alternator pull was stiff & Lumpy sounded like a grinding noise

3 hours ago, Dibble2 said:

No the light Dosnt Come on, the Belt was Squeeling and the alternator pull was stiff & Lumpy sounded like a grinding noise

OK, start with the alternator control wires. The battery light not illuminating usually means that one or both of them is disconnected or broken.

Ive just thrown a new 120a Alternator on it, sorted the belt slipping and it hasnt blown anything was cheaper than a 90a to buy

Edited 4 October, 20254 Oct by Dibble2