Revs not dropping on gearchange

[Kaptain Klang]

It happens if I'm accelerating hard between gearchanges: Drop the clutch and the revs take about a second before they start to drop. Is it a problem with the Throttle cable, the butterfly in the TB, or the TPS?
Car is a 2001 Coilpack engine 1.0, as you may have guessed Please help!

 

[Enuo]

Clutch not biting properly. Check there is slack in the clutch cable. If not, slacken it and see if that helps. If not, new clutch am afraid.

 

[Kaptain Klang]

I'm planning for a new clutch before summer already. It also does it when it's not in gear: Give it a bootfull and the revs are slow to return to tickover.

 

[frank]

vacuum leak maybe ?

 

[Kaptain Klang]

I was thinking that. Where would be a good place to start looking?

 

[frank]

I was thinking that. Where would be a good place to start looking?

all the pipes that go to the inlet mani

 

[Enuo]

When you say drop the clutch do you mean disengage? To me dropping the clutch is what you do when you want wheelspin confusion haha

 

[Kaptain Klang]

Yes, that's what I mean. I'm getting confused in my old age....

 

[pollyp]

perhaps sticky dirty slow-reacting or mis-calibrated Idle Control Valve and/or stuck fast idle waxstat mechanism?

http://micra.org.uk/threads/pollymobiles-rebuild.35251/page-19#post-446256

 

[jamier2007]

Our coilpack van has the same thing. It's not major thing, just on quick gearchanges it's a bit 'jerky' rather than smooth. Probably just a dirty tb, although i've never looked into it.

 

[Kaptain Klang]

Had a closer look under the bonnet:

Eh up, what's THIS?

And THIS.....

... seems to come from the gearbox!

 

[Clodo]

Carbon canister I believe i also have those lose hosing x

 

[Kaptain Klang]

I wonder what the spare nozzle is for, though?

 

[McMicra]

breather

 

[Tim B]

Have you maybe thought that it could be a sticky release bearing?

 

[jk9194]

have you solve this problem?

 

[k11john]

I have the same issue high idle when started but continues once warm then when release clutch it Judders because of high revs how do I fix this ? Sorry for the hijack

 

[Kaptain Klang]

Not yet, no. It could be the clutch not releasing properly, so I have to live with it til I can get the dosh for a new clutch :/

 

[k11john]

Dam man that sucks , my shifts are sometimes really hard but other times smooth as do you happen to know why dude ? Like any advice ?

 

[Kaptain Klang]

*blows dust off thread*

perhaps sticky dirty slow-reacting or mis-calibrated Idle Control Valve and/or stuck fast idle waxstat mechanism?

http://micra.org.uk/threads/pollymobiles-rebuild.35251/page-19#post-446256

I have a 2001 Micra: It has the later TB without the Waxstat. I gather it's less reliable than the earlier one. Should I just get a GE16 TB to replace the iffy stocker?