Hiya
My 96 AGG 8v (simos 4s) GTI has been doing the random on and off cutout for about a year now
The best stretch with no bs was 8 months. Car was imported ex UK to New Zealand in 2001 and has 62miles on the clock.
Have done all new vag parts - dizzy cap/rotor, ht leads, coil, plugs, new battery, fuel/air filter, tb is ok, maf is ok, hall sender is ok, all the air/water/oil piping is brand new too, and vagcom brings up no faults.
I did remove the factory rubbish exhaust in 2005 (cat not needed in NZ for wof/mot) And i will replace that black #30 relay with the grey one this week.
I did try the black #30 relay from the 97 16v, but the cutout is still the same, its total death, no runon or shudder the revs just die!!!
Wait 2 minutes and then she fires up, no problem

not good if you are stuck in traffic huh.
A mate of mine imports lots of mk3 golfs to NZ from Japan and this is the main cause of silly annoying faults with them on this side of the world too.
The later Variant and the Vento 97-98 also gets the AGG 8v and my mate says that the cause of the cutout issue for this engine (in most cases for him) is the CRANK ANGLE POSITION SENSOR located just below and behind the oil filter crapping out, as well as that factory black #30 relay.
The engine itself is in good nick and runs real good when it runs
Can anyone please advise how to remove this? Do i have to remove the front engine mount?
Or is it a simple 'click and twist out' jobbie?
I just want to fix this once and for all and maybe help others do the same.
Thanx muchly