Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Picked up the new car yesterday. Fitted with a c20xe. Only problem is, when you start the car, it struggles to idle, have to keep foot on the accelerator a little for a few mins till it warms up. Then when it warms up after about 5-10 mins, it will idle anywhere between 1200rpm and 2000rpm!
What would cause this? ICV? TPS?
Currently has no lambda sensor, so engine management light is on. Am i right in saying that that is for emmisions, and will cause the engine management light to come on, but not cause the idling problem?
Any help much appreciated! 
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Dan295
Member
Registered: 9th Oct 06
Location: London
User status: Offline
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needs a lambda sensor fitted
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john_redtop
Member
Registered: 31st Dec 08
Location: acklam middlesbrough
User status: Offline
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Lamda shouldn't cause that I've ran mine for 4 year with out 1 and had no issues
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Thats what i thought
Your engine management light on without it john?
[Edited on 18-05-2012 by Matty SRi]
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john_redtop
Member
Registered: 31st Dec 08
Location: acklam middlesbrough
User status: Offline
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Yeah but I have taken the bulb out I had some idleing issues the other month it was pulseing dropping to about 400 then up to about 1000 and wanting to stall at light etc I changed the afm and its fine now
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Hmmm... Mine's kind of similar. Wont hold revs at all when first started, then when warm idles anywhere between 1200-2000. Wonder would afm cause that?
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Dan H
Member
Registered: 27th Nov 08
Location: Stockton-on-Tees
User status: Offline
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unplug AFM, TPS, ICV one at a time, see anything chages, when you do each one?
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Yeah, think im gonna go out and try that in a bit
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fazza
Member
Registered: 7th Feb 08
Location: Plymouth
User status: Offline
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Will be ICV
Get it out and soak in carb cleaner in the inside. Did mine last week and couldnt belive the shit that came out of it. Could also see it sticking etc
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Teddyhead
Member
Registered: 20th Jul 09
Location: Berkshire
User status: Offline
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try afm off someone elses car you knows working nicee and on mnie the temp sensor caused my car to die when cold untill warmed up, check for air leaks on inlet
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Darryl H
Organiser: South Central
Premium Member
Registered: 19th Nov 09
Location: Camberley Drives: Porsche 944
User status: Offline
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My tps made mine do that.
Earth pin 20 so it bypasses the lambda like a 20xe
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Cheers lads. Dont know anyone else that would have 1. Think ill have to try the way of elimination
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Where exactly is ICV and TPS located? Gonna go out and have a little fiddle now. See how i get on. But there isnt alot of room lol
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john_redtop
Member
Registered: 31st Dec 08
Location: acklam middlesbrough
User status: Offline
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I'm only in acklam mate if you want pop over and try mine on see how it is
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Im banned mate  Cheers for the offer though. Unless ya wanted to come to me lol
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DansCorsaSXi
Organiser: Yorkshire
Premium Member
Registered: 13th Jan 10
Location: Worksop
User status: Offline
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Mines same but mine struggles from 1000 to 900.
Star silver C20XE SXi Project thread
Smoke Grey Corsa GSi Project thread
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Just took of lambda sensor. Idles fine while its unplugged, but struggles to rev... Kind of misfiring
Edit - Also unplugged AFM, no difference
[Edited on 18-05-2012 by Matty SRi]
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Dan295
Member
Registered: 9th Oct 06
Location: London
User status: Offline
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if your engine is supposed to run with a lambda it should have one, it adjusts how rich/lean the engine runs so will have an affect on idle and revs
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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yeah, well it was unplugged when i got it and was reving high. just plugged it in and it idled fine, but kind of misfired. 
Lambda should be plugged in by the sounds of it, and the problem is something else. ICV or TPS maybe
[Edited on 18-05-2012 by Matty SRi]
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Dan295
Member
Registered: 9th Oct 06
Location: London
User status: Offline
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yup i would agree, check coil and leads also.
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Yeah will do. ICV and TPS easy to do/get to?
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Dan295
Member
Registered: 9th Oct 06
Location: London
User status: Offline
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icv is underneath the inlet so bit difficult
tps, if you disconnect the pipe from the inlet point it facing out across the rocker cover with the afm and filter all connected.its the small black sensor on the side of the throttle body, undo the screws and move it about on the shaft and listen for a change in idle, if it increses/decreases switch it off or a few seconds and switch it back on again and readjust if neccessary.
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Matty SRi
Member
Registered: 3rd Dec 08
Location: Stockton-on-Tees Drives: Mk3 Golf GTi
User status: Offline
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Cheers mate, will give it a go in the morning
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