Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: dodgy on 11 December 2006, 10:44:52
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I have an X reg 2.2 estate that has the engine light coming on now and again. It also has poor MPG mid 20's. I know there is a small hole in the exhaust just before the lambda sensor which is annoying as the rest of the exhaust is brand new! Am I right in thinking that the hole would affect the MPG and could cause the engine warning light to come on? What sort of MPG should I be getting from a 2.2 manual as I have only had the car a couple of months?
I will be fixing the exhaust this week so maybe I'll just wait and see but any advice is greatly appreciated.
Cheers
Dodgy
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I remember the 2.2 being about the same as a 2.0 and my 2.0 gets about on petrol not gas about 35mpg around town and about 42mpg on a motorway long trip.
Just did alittle working out and its alittle lower than stated more like 32mpg around Town and 38mpg Motorway
Hope this helps
Craig
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A hole in the exhaust will make the car run rich and throw a lambda sensor fault code.....so the hole needs fixing even if its only a bit of exhaust bandage and a jubilee clip.
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Error codes from lambda sensors can make the car drink a lot of fuel. Clearing error codes every time you start the car may recover the MPG, but is a major PITA.
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you should be getting more than mid 20's out of a 2.2
But it does depend on what kind of runs you are doing, on the motorway @ 80 i easily hit 35mpg... around town it drops though... over a whole tank i tend to average 31/32 mpg according to the trip comp, which is around 420 to a tank.
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Thanks Guys, What a rapid response! ::)
The best I have had is 27 on a long run on the motorway so it does look like the hole could be causing the issue.
Thanks for all your comments
Cheers
Dodgy
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The exhaust probably needs replacing anyway, but could bodge something together to see if it cures problem...
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I suspect by the engine light you mean the emissions light (piccy of engine) which will be caused by the hole in the exhaust if it right before the lambda sensor
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Dodgy.
Auto or manual box. My 2.2 has an autobox and gives low 20's around town and 29 - 32 on longer runs- and 18 - 20 when towing Nowhere near the sort of mpg I got from my 2.0 manual 30 around town 35+ on long runs Even towing brought high 20's
Cheers
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Hi All,
Just checked the exhaust. It is brand new from just behind the cat backwards. The cat and manifold look fine however there is what looks like a woven mesh covered flexible joint which is where the leak is coming from. Some of the mesh is not attached at end. Is this part a separate replaceable item ?
It is a manual BTW
Regards
Roger
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Hi All,
Just checked the exhaust. It is brand new from just behind the cat backwards. The cat and manifold look fine however there is what looks like a woven mesh covered flexible joint which is where the leak is coming from. Some of the mesh is not attached at end. Is this part a separate replaceable item ?
It is a manual BTW
Regards
Roger
I am guessing you mean the mesh section midway on the cat.
Means you need a new cat if the mesh is knackered.
I am sure someone else will be able to comfirm my thoughts.
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flexi joint and can be replaced IF exhaust next to both ends is solid .Go to a decent exhaust /cat shop. Had mine done 12 months ago £85 + VAT bit cheaper than a new CAT assembly