vilguy

Do'er of stuff and the like

• Sep 26, 2013

• #1

ive read a few threads about a similar issues but cant seem to get to the bottom of it.

The wifes 1.8 is playing silly buggers, it would rev erratically at idle, sometimes sitting at 3000 etc.

Sounds rough as a dog when it does that too.

I fitted a good alloy TB which i robbed from my red one (which had no problems) and its made no difference.

Had a looksee for any loose or split pipes and cant find anything.

Inlet manifold air leak perhaps? Or dodgy air sensor? Any thoughts?

 

Nodge68

Well-Known Member

• Sep 26, 2013

• #2

Idle are control valve is the best place to start.

 

ryan168

New Member

• Sep 26, 2013

• #3

Stepper motor(idlle control valve) done a few on different motors but not a hippo!!

 

Duncp73

New Member

• Sep 26, 2013

• #4

Mine was doing something very simular to this, it was the throttle position sensor. I can't remember if you would of changed this when you changed the TB though.

 

vilguy

Do'er of stuff and the like

• Sep 26, 2013

• #5

yeah i changed the tbs as it was on the alloy one that was already present.

 

ryan168

New Member

• Sep 26, 2013

• #6

Spray a bit of wd or something like around pipes and manifold bit by bit with the motor running and listen out for any change might detect an air leak somewhere..

 

Nodge68

Well-Known Member

• Sep 26, 2013

• #7

Defo clean the idle air control valve. And check the wires are zip tied to it as well

 

vilguy

Do'er of stuff and the like

• Sep 27, 2013

• #8

will give it a go tonight. I was trying to rob the IACV off my red un last night to install that in it, but since the fire under the bonnet the bonnet has decided it does'ne want to open!

I was banging it like a gorilla last night as the wife was pulling ma lever :O

 

Nodge68

Well-Known Member

• Sep 28, 2013

• #9

vilguy said:

will give it a go tonight. I was trying to rob the IACV off my red un last night to install that in it, but since the fire under the bonnet the bonnet has decided it does'ne want to open!

I was banging it like a gorilla last night as the wife was pulling ma lever :O

Click to expand...

Pull the large hose off the IACV and spray some carb cleaner or WD40 into the valve while the engine is running. Rev the engine a few times as that will activate the motor. That should sort you out.

 

vilguy

Do'er of stuff and the like

• Oct 2, 2013

• #10

it was the iacv cheers guys. I whipped it off and cleaned it properly though

cheers