Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: supersaw on 13 August 2012, 13:26:23

Title: Problem with Idle control
Post by: supersaw on 13 August 2012, 13:26:23: My 95' Omega B has a problem:

When I starting on a gas it starts very slowly and can't normally run. RPMs jumps from ~0.7(normal) to 2000-3000 or drops on ~0.4 and the motor "chokes". Then lights up "engine check".
But when I switch to LPG it seems all ok. When my motor has a working temperature this problem occurs sometimes.

6 months ago I have a similar problem, but then I changed my Mass air flow sensor (because it was completely broken) and I rewashed my Idle control valve and my problem disappeared until now.
Now I rewashed again my Idle valve but It has no effect.

Where is a hook ? :)
Title: Re: Problem with Idle control
Post by: TheBoy on 13 August 2012, 13:38:22: The LPG kit, is it a mixer system or sequential system? If a mixer, has someone messed about with the throttle?
Title: Re: Problem with Idle control
Post by: supersaw on 13 August 2012, 14:08:48: Quote from: TheBoy on 13 August 2012, 13:38:22
The LPG kit, is it a mixer system or sequential system? If a mixer, has someone messed about with the throttle?

its a mixer.
Title: Re: Problem with Idle control
Post by: TheBoy on 13 August 2012, 14:24:48: Has somebody messed with the throttle stop? The butterfly should completely close with no throttle.
Title: Re: Problem with Idle control
Post by: supersaw on 13 August 2012, 14:30:21: Quote from: TheBoy on 13 August 2012, 14:24:48
Has somebody messed with the throttle stop? The butterfly should completely close with no throttle.
sorry, what is a butterfly ?
Title: Re: Problem with Idle control
Post by: tunnie on 13 August 2012, 14:38:54: Quote from: supersaw on 13 August 2012, 14:30:21
Quote from: TheBoy on 13 August 2012, 14:24:48
Has somebody messed with the throttle stop? The butterfly should completely close with no throttle.
sorry, what is a butterfly ?

Inside the throttle body, the part which opens and closes (letting in air) is called the butterfly :y
Title: Re: Problem with Idle control
Post by: supersaw on 13 August 2012, 15:04:25: Well I don't think that ?I messed up. I just unpluged/ removed then sprayed with WD40 and putted back....
Title: Re: Problem with Idle control
Post by: TheBoy on 13 August 2012, 15:20:06: Quote from: supersaw on 13 August 2012, 15:04:25
Well I don't think that ?I messed up. I just unpluged/ removed then sprayed with WD40 and putted back....
Check it closes properly and fully - some LPG fitters open this slightly to assist LPG idle.

WD40 is not a lubricant. Use a proper thin machine oil.
Title: Re: Problem with Idle control
Post by: supersaw on 13 August 2012, 16:30:41: Quote from: TheBoy on 13 August 2012, 15:20:06
Quote from: supersaw on 13 August 2012, 15:04:25
Well I don't think that ?I messed up. I just unpluged/ removed then sprayed with WD40 and putted back....
Check it closes properly and fully - some LPG fitters open this slightly to assist LPG idle.

WD40 is not a lubricant. Use a proper thin machine oil.

Sorry, for a dumb question, but how can I see if it closes properly? I just removed and cleaned this part:

(http://img526.imageshack.us/img526/5684/dfgiw.jpg) (http://imageshack.us/photo/my-images/526/dfgiw.jpg/)
Title: Re: Problem with Idle control
Post by: TheBoy on 13 August 2012, 18:08:18: The throttle butterfly, not the ICV :)
Title: Re: Problem with Idle control
Post by: supersaw on 18 August 2012, 18:40:03: Quote from: TheBoy on 13 August 2012, 18:08:18
The throttle butterfly, not the ICV :)
Sorry, I'm not so mechanical. Where can I see if it closes properly ?

Edited:
ok, I watched Youtube, I will check it.
Title: Re: Problem with Idle control
Post by: RobG on 18 August 2012, 18:46:10: Remove air trunking from top of throttle body. Butterfly is the brownish colour metal flap in this pic (viewed from underneath). Operate throttle cable lever to see if it opens & closes correctly
(http://t1.gstatic.com/images?q=tbn:ANd9GcR2Tm6W7v12ftaFv1JbJNiV8JakHtyV5IUTRQRuRSjX0gGH4-qQDg)
Title: Re: Problem with Idle control
Post by: supersaw on 18 August 2012, 18:54:11: Thanks ! I will check.
Title: Re: Problem with Idle control
Post by: supersaw on 18 August 2012, 19:16:34: Sorry for double posts.

To clarify my problem I found on youtube a video with exact problem:
http://youtu.be/QqSGGM4l9-E (http://youtu.be/QqSGGM4l9-E)