8v digi ...... not again! .........idle

[ritmo]

................the car was running fast at about 1500rpm so just cleaned out the isv and all the pipes and idle screw as discribed on other posts and put it all back together now it revs at 3000rpms and drops to 1000rpm then back to 3000rpm like someone is sitting reving the car!!!!
I disconected the isv from the power and it idles fine! may be a little low at 750rpm
anyone had this before? and any ideas on how to fix as I'm not happy driving it with the isv disconnected.
Andy

[X4MGS]

Tried a new blue temp sender??

[ritmo]

yes replaced this about 3 months ago
in fact think a may have purchaced 1 from yourself off ebay?
 

[X4MGS]

Ummm...

Have you tested the microswitch on the throttle body?

Have you read RJ's thread on tuning a digi? It's in the maintenance section!

[Dogbot]

I have a spare mk2 ISV you could try as a last resort if needs be

[ritmo]

No I havent tested it is there an easy way? although it does click when pressed in.
what does this connect to under the TB? cant see it properly? wires look ok too!

Dogbot........another isv would be good to try but I live in Scotland

[Dogbot]

awww, well pm your postcode i will see about postage, its not that heavy

Edit... Ouch, Its  like nearly a tenner next day,

explore other routes first i suppose there is a test you can do on them, they should also be buzzing or humming.....

[X4MGS]

http://www.golfgtiforum.co.uk/index.php?topic=33253.0

http://www.members.tripod.com/~fuelie/tuneup.htm

Might Help

[theclash]

My guess throttle cable to tight or rubber bung on rocker cover split

[weazgti]

Wires to blue temp broke could try disconnecting and see if there is any difference. I had this tool me ages to find broken wire causing this.