Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[dodgy]

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

[Craig_R]

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

[Marks DTM Calib]

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.

[theolodian]

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.

[tunnie]

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.

[dodgy]

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

[TheBoy]

The exhaust probably needs replacing anyway, but could bodge something together to see if it cures problem...

[Taxi_Driver]

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

[bigall]

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

[dodgy]

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

[nixoro]

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.

[bigall]

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