ISV part number

[Rikki Kitto]

Anyone got this please or a good one for sale

[UrS4boy]

Anyone got this please or a good one for sale

The 20VT N71 ISV part number is 034133455B (or Bosch 0280140512) as discussed in this N71 ISV post:

http://forums.quattroworld.com/s4s6/msgs/21853.phtml

From the engine bay device map (click on the labels to get more info about the labeled device) (This is a keeper and should be book marked for future reference)

http://members.shaw.ca/speedtek/UrS%20Engine%20Bay%20Device%20Map.html

[Jamo]

http://www.s2-audi.co.uk/tech_articles/motronic/isv.htm

Handy site for various stuff regarding the S2

[Rikki Kitto]

Cheers guys

[EspenW]

You have tried to clean it ? (I'm sure you have, but had to ask)

[Rikki Kitto]

Isn't it a sealed unit

[UrS4boy]

Isn't it a sealed unit

No so sealed that you can't run some carb cleaner through it to take out gunk that might be preventing the stepper motor from working properly.

From the link to ISV info that I posted earlier in this thread:

"Sometimes, if there is a lot of oil vapours from the crankcase ventilation system or the turbo seals (as evidenced by oil in the cross-over tube or the Michelin Man hose), the ISV will become dirty and fail to function properly, i.e. idle will hunt around a lot. To clean, remove from the car (two clamps and one electrical connector) and clean the inside with isopropyl alcohol or carb cleaner. DO NOT MOVE the "shutter" by hand, instead, apply 12V across the pins to activate the stepper motor. If cleaning doesn't restore proper function, then the solution is a new one or a very good used one. "

[Rikki Kitto]

Thanks again, bought a second hand one of fleabay but is a three pin and slimmer than mine so no use

Just noticed the B missing of the end DOH!!!

I'll try cleaning mine tomo after work see if that sorts it

[Rikki Kitto]

Cleaned it out put power to it seems to work fine, car seems bette,r will have to wait and see as always