Author Topic: G40 stalling/idle problem.  (Read 9418 times)

Offline cheddarcheese

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G40 stalling/idle problem.
« on: July 07, 2009, 03:38:41 pm »


i can get my G to idle  and if i accelerate threw the rev range its fine but i let it go to idle or i let my foot of the accelerator the revs drop way below 500rpm and stalls even if i hold the revs at around 1500rpm and let of the accelerator it still tries to stall and stalls. the only way i can get it to idle is if i bring the revs down slow.

They engine has been sat in a unit for a year or so before i installing it and has a brand new alternator.

any ideas

cheers

« Last Edit: July 07, 2009, 04:02:09 pm by cheddarcheese »

Offline vwmk3jon

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Re: G40 stalling/idle problem.
« Reply #1 on: July 07, 2009, 04:31:11 pm »
Almost what mines doing now! Pain in the f****** arse!

Interested to see what people say on this.

Offline cheddarcheese

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Re: G40 stalling/idle problem.
« Reply #2 on: July 07, 2009, 07:09:32 pm »
I just cleaned the idle control valve. no different.
Changed coil. no different.

Offline hayesey

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Re: G40 stalling/idle problem.
« Reply #3 on: July 07, 2009, 07:14:26 pm »
what's the spec of the engine?

Offline cheddarcheese

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Re: G40 stalling/idle problem.
« Reply #4 on: July 07, 2009, 07:21:10 pm »
ECU with fitted PSD chip
G40 charger full blend
68mm pulley
G40 manifold Decat and Strait threw exhaust
Dewedged throttle body
boost return removed

Offline hayesey

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Re: G40 stalling/idle problem.
« Reply #5 on: July 07, 2009, 07:32:40 pm »
when it does idle, what rpm does it idle at?

might also be worth making sure that the holes in the throttle plate aren't leaking.

Offline vwmk3jon

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Re: G40 stalling/idle problem.
« Reply #6 on: July 07, 2009, 07:37:14 pm »
What would you suggest hayesey if i was running a standard t/b?

Offline GAF2

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Re: G40 stalling/idle problem.
« Reply #7 on: July 07, 2009, 07:40:12 pm »
mines exactly the same got a second hand isv but dont know if i will bother now if it never worked for you, when it does idle hayesey it sits about 1000rpm.  Could you explain a bit more about this throttle plate.

cheers guys

Offline cheddarcheese

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Re: G40 stalling/idle problem.
« Reply #8 on: July 07, 2009, 07:43:27 pm »
when it idles its about 1000rpm. i have no idea what to look at when it comes to to the throttle body as it was apparently a Dewedged throttle body when i brought the engine.

any pictures links?

i do have the opportunity to pinch some parts from my m8's none running G due to Charger oil seals gone just to see if any parts are fecked.
« Last Edit: July 07, 2009, 07:47:05 pm by cheddarcheese »

Offline hayesey

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Re: G40 stalling/idle problem.
« Reply #9 on: July 07, 2009, 08:30:33 pm »
jon - your problem could just be down to needing remapping.  Hard to say really, could do with knowing what the fuelling is like when it happens.  I had similar issues with mine when it was too lean at idle.

this is a picture of a throttle body:



those screws on the throttle plate hold the wedges on, when you remove the wedges these holes need sealing up or it wont idle properly. 


Offline cheddarcheese

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Re: G40 stalling/idle problem.
« Reply #10 on: July 07, 2009, 08:34:55 pm »
by looking at that i think mine is a standard throttle body .

Offline hayesey

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Re: G40 stalling/idle problem.
« Reply #11 on: July 07, 2009, 08:36:45 pm »
so does it still have the wedges on the throttle plate or is the plate just flat?

Offline cheddarcheese

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Re: G40 stalling/idle problem.
« Reply #12 on: July 07, 2009, 08:44:09 pm »
it still has the wedges.

Offline vwmk3jon

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Re: G40 stalling/idle problem.
« Reply #13 on: July 07, 2009, 09:16:18 pm »
yeah, i should think the lack of BVH & aquamist doesnt help when the chips suited to it.

Offline polo classic

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Re: G40 stalling/idle problem.
« Reply #14 on: July 08, 2009, 09:46:58 am »
Yeah that will make the engine run lean down low