eratic idle

[packers]

Having  problems with engine tickover keeps hunting then stalls seems worse when cold.
thinking it could be isv ? are they a common problem and where would i get replacement
pressuming main dealer.

[hayesey]

yeah main dealer only and they're not cheap.

[hardchargin40]

Try cleaning it out first though with carb cleaner, might just be stuck.

Ive got an ISV in my G40 bits box if needed if your desperate. 

[matthg40]

i thik my isf valve is knakaerd to

[wozzaG40]

don't rule out other things though, yes the ISV could be knackered but there are other things that could be having an impact on your idle.

[jimbugalee]

My G40 still does this .... here's all the things I tried

http://www.polog40.co.uk/forum/index.php/topic,2725.0.html

[hardchargin40]

Jim... you changed the Hall Sender yet?  Common Polo Problem and pretty much your symptoms!!!

[hardchargin40]

Well Distributor as a whole item then, possibly its throwing the ignition timing out all the time?  Cant think of anything else bar an ECu problem that would throw up a high speed RPM on vag-com when at idle (abit like a trigger wheel gone tits on a throttle body application).  Revving up could be it trying to catch it?