tick over "or not"

[DISCO GSI]

i got my car back after getting the haed gasket done! while it was in i got a full headset put on it , cam belt and tensioners , water pump , inlet port cleaned , injectors cleaned , and a service ! ever since it seems to tick over at between 12,00 and 15,000 rpmthen sudenly drops to ten then strait back up and sits where it was

i have searched for air leaks but it seems fine and its driving me mental anyone have any ideas as to what it could be?

[mad-driver]

15000 RPM is alot for a car...

did you mean 1500?

Is there some sort of idle control valve not doing its job correctly?

[Philsutton]

pmsl i wouldnt be complaining if mine revved to 15'000rpm.

[justnovas]

Hello
Could be a air leek or idle control valve or throttle sensor .

[mad-driver]

pmsl i wouldnt be complaining if mine revved to 15'000rpm.

Nah i wouldnt, but it would have gone bang way before hand :D

[DISCO GSI]

thanx ! it could be the idle contol ! is there a way to clean it up and where is it located ( my haynes manual has vanished )

[mad-driver]

There is a way to clean it, but iv forgottten since its been a while since my dad had his old cav

http://www.volvoclub.org.uk/faq/Images-Parts/IdleAirValve.gif

looks like that if its the same as my dads had, should be around the inlet i think

[Lee]

yep, it was that bugger on my old cavvy, next time its hunting, give it a whack with a spanner or something and see if it stops, mine was getting stuck and that confirmed it.

[mad-driver]

My dad used to blow down it to unblock it lol, also used some sort of lube like WD40

[Aragorn]

no nova engine has an ICV like that

if its a late model GSi theres prolly an ICV in the throttle body (black thing)

if its an early GSi with AFM then theres not really a ICV, just a secondary air valve which could be sticking open