Omega Owners Forum - lambda sensor

rinkleyrob Newbie Offline Posts: 15 Stevenage, herts Gender: Drives: omega 2.2cdx petrol auto	lambda sensor 11. Jan 2011 at 15:45 Hi can anyone tell me where the lambda sensor is on my 2.2 auto petrol 2001 model omega, and how difficult is it to replace. thanks
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Andy B

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Bury Lancs
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Drives: 1999 3.0 Elite auto/TDM

Re: lambda sensor
Reply #1 - 11. Jan 2011 at 16:22

rinkleyrob wrote on 11. Jan 2011 at 15:45:

Hi can anyone tell me where the lambda sensor is on my 2.2 auto petrol 2001 model omega, and how difficult is it to replace. thanks

I'm sure I'll be corrected if I'm wrong but I'm sure that a 2.2 has 2 catalytic converters hence it also has 2 lambda/oxygen sensors. They are the only electrical connections on the exhaust. Thumbs Up!

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rinkleyrob Newbie Offline Posts: 15 Stevenage, herts Gender: Drives: omega 2.2cdx petrol auto	Re: lambda sensor Reply #2 - 11. Jan 2011 at 18:30 Hi thanks for your help, 2 cats eh just what I wanted to hear.
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Andy B Over Active Poster Offline Posts: 21988 Bury Lancs Gender: Drives: 1999 3.0 Elite auto/TDM	Re: lambda sensor Reply #3 - 11. Jan 2011 at 18:33 rinkleyrob wrote on 11. Jan 2011 at 18:30: Hi thanks for your help, 2 cats eh just what I wanted to hear. you'd have 4 if you drove a 2.6 or 3.2 There's a pre-cat, than a lambda, main cat and then another lambda sensor.
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RobG Omega Lord Offline I might have a link, pic or part number for that Posts: 7968 Bristol Gender: Drives: 53 plate 2.2 CD auto	Re: lambda sensor Reply #4 - 11. Jan 2011 at 18:34 What makes you think one of your O2`s has gone
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rinkleyrob Newbie Offline Posts: 15 Stevenage, herts Gender: Drives: omega 2.2cdx petrol auto	Re: lambda sensor Reply #5 - 11. Jan 2011 at 18:35 That makes me feel a little better
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rinkleyrob Newbie Offline Posts: 15 Stevenage, herts Gender: Drives: omega 2.2cdx petrol auto	Re: lambda sensor Reply #6 - 11. Jan 2011 at 18:43 Had 2 new middle and rear box fitted recently after a couple of weeks sounded like it was blowing then eml came on had it diagnosed mechanic code stated came rich / lean exhaust reset it but has come on again after a few days, giong back to exhaust fitters tomorrow to get it checked out
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diplo-matt Junior Member Offline Posts: 53 Scarborough Gender: Drives: Omega MV6, Monza, Senator, Astra MK1, Capri	Re: lambda sensor Reply #7 - 11. Jan 2011 at 18:47 Aside from live data, anyone know of a way to check wether the lamdas are fault on these. My cars a bit juicy at the minute, im not sure whether its timing for the lamdas?
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rinkleyrob Newbie Offline Posts: 15 Stevenage, herts Gender: Drives: omega 2.2cdx petrol auto	Re: lambda sensor Reply #8 - 11. Jan 2011 at 19:36 forgot to add been running a little rough when cold
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Welung666

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West Midlands
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Drives: 99 2.5 saloon Tractor

Re: lambda sensor
Reply #9 - 11. Jan 2011 at 20:34

Right, the code you'd have got is P0170 Rich/Lean Fuel Trim Bank 1. Rough running when cold along with the code P0170 is a sure sign your MAF (Mass Air Flow Meter) is farooqed. Try looking in the parts for sale section and PM'ing RobG (you won't be able to reply to his thread as you don't have enough posts yet). He is breaking a 2.2 at the moment Thumbs Up!

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Andy B Over Active Poster Offline Posts: 21988 Bury Lancs Gender: Drives: 1999 3.0 Elite auto/TDM	Re: lambda sensor Reply #10 - 11. Jan 2011 at 20:39 Welung666 wrote on 11. Jan 2011 at 20:34: .... 1. Rough running when cold along with the code P0170 is a sure sign your MAF (Mass Air Flow Meter) is farooqed. ....... Why's that Lee? .............obviously not doubting you at all
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Welung666

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Drives: 99 2.5 saloon Tractor

Re: lambda sensor
Reply #11 - 11. Jan 2011 at 20:42

Had it a couple of times on customers cars and the ~~gay coloured~~ gold saloon I had. P0170 and running like a bag of nails when cold.

Rob as a quick test, when it's cold unplug the MAF (plug on the tube coming from the air filter housing just behind the drivers side headlight) before you start it up. See if it runs any better. If it tuns better then you'll need to replace the MAF Thumbs Up!

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Vehicle Movements, MOT's, tints and Repairs - PM for details.

CLICK HERE for instructions - how to Paperclip/Pedal test your car

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diplo-matt Junior Member Offline Posts: 53 Scarborough Gender: Drives: Omega MV6, Monza, Senator, Astra MK1, Capri	Re: lambda sensor Reply #12 - 12. Jan 2011 at 15:01 Anyone know the code for the lamda?
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Welung666 Omega Lord Offline Posts: 9768 West Midlands Gender: Drives: 99 2.5 saloon Tractor	Re: lambda sensor Reply #13 - 12. Jan 2011 at 15:51 diplo-matt wrote on 12. Jan 2011 at 15:01: Anyone know the code for the lamda? Fault code or part number? Did you try what I suggested?
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rinkleyrob Newbie Offline Posts: 15 Stevenage, herts Gender: Drives: omega 2.2cdx petrol auto	Re: lambda sensor Reply #14 - 15. Jan 2011 at 12:14 Hi it appears that the cat is leaking so will have to replace, does anyone have the part numbers for the 2 lambda sensors, thaks
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