Hunting Idle after pressing throttle?

[Danno57]

Hi all, just wondering if anyone has a clue what this problem could be before I get diagnostics done. I have cleaned the MAF which didn't help and have run the car still with it completely removed for about a minute to see if that was the main cause of the problem, which it doesn't seem to be. The actual problem itself is when I start the engine the idle doesn't hunt at all, as soon as I press the throttle it immediately hunts up and down about 1000rpm -turn the engine off and restart and it's back to a perfect idle again? Would this be a lambda sensor / idle air control valve problem?

Any help much appreciated.
Engine is the 1.6 AKL by the way.

Dan

 

[karls s3]

Has your car got a idle control valve

 

[Danno57]

I've googled online if it does have one but it's coming up with complete throttle body assemblies that are £200+.

Think I'll just see what the mechanic says from diagnostics, could also be a vacuum leak from what I've heard but I haven't had the time to check for something like that. The problem is so annoying in traffic when everyone's looking and wondering why you're revving up and down haha.

 

[s3dave]

I would say vacuum leak look around the inlet manifold for split pipes

 

[Danno57]

Many thanks Dave will have a look.