Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: bruiser5050 on 15 August 2011, 20:34:52
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Hello all , bit difficult to describe this one , car starts and runs fine , but after about 5 mins or so if im sitting at 60mph the engine revs fluctuate up and down by about 300-400 rpm up and down. if i make the auto box kick down it will clear for about 30 secs then return , was told it could be lambda issue so changed both of these , problem still exists , done paper clip test and no engine faults present ,
any help would be greatly appreciated
many thanks , Mat
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Whats your location mate?? Worth updating your profile to say so your not constantly asked :y
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from memory maybe the ICV needs a good clean.
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profile updated , ICV , is this the push fit one on the right hand side of the plenum?
Mat
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Yep
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cool , i'll have a go at that tomorrow morning and let you know how i get on ,
cheers
Mat
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Wouldn't this more likely be an EGR problem, perhaps needing a clean?
Idle control valve surely is only active when throttle is closed, which wouldn't seem to be consistent with the fault occuring at 60mph. :-/
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wheres the egr valve located???
Mat
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The EGR valve is on the left of the plenum with the copper pipe running out of it...
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well removed egr and idle control as well as the throttle body , cleaned them all out , loads of crud in the throttle body , egr valve looks new , prob only 12months old , put everything back .
tried to start and flat battery wtf!!
battery only 2 weeks old , now this may sound daft but would this cause running problems as i have an 2002 astra that wouldnt rev and kept cutting out , turned out the battery was that shot that it was pulling the voltage down throught the car. Could this happen , even if the battery is new , could something else on the car be pulling the voltage down so that when cruising it is cutting out the ecu could compensate making it surge ??????
only a thought :)
Mat