Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Search the maintenance guides for answers to 99.999% of Omega questions

Pages: 1 2 [3] 4  All   Go Down

Author Topic: P0420 - Catalyst Efficency Above Threshold - on 2.2  (Read 4249 times)

0 Members and 1 Guest are viewing this topic.

tunnie

  • Get A Life!!
  • *****
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37523
    • Zafira Tourer & BMW 435i
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #30 on: 01 April 2015, 10:53:12 »
Quote from: steve6367 on 01 April 2015, 10:47:24
Wow, that was stuffed!

Just made some calls and can get the flexi replaced today for £120 - might have to go for that given the time pressure  :-\

This was just a few days earlier, it can quickly break apart once it's started to go:

Logged

tunnie

  • Get A Life!!
  • *****
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37523
    • Zafira Tourer & BMW 435i
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #31 on: 01 April 2015, 10:54:39 »
Quote from: tunnie on 01 April 2015, 10:50:32
Quote from: steve6367 on 01 April 2015, 10:47:24
Wow, that was stuffed!

Just made some calls and can get the flexi replaced today for £120 - might have to go for that given the time pressure  :-\

What is the breakdown on that?

Part is ~£10...

http://www.ebay.co.uk/itm/2-UNIVERSAL-51MM-EXHAUST-PIPE-FLEXI-FLEX-REPAIR-TUBE-JOIN-2-X-4-650100-/371144483891?pt=LH_DefaultDomain_3&hash=item5669ef6433

Took all of master around 30mins maybe to change? Including a tea break!

Also, any place that does the work, ensure it's put together right afterwards, otherwise it won't line up for the exhaust bolts.  :y
Logged

steve6367

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1613
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #32 on: 01 April 2015, 12:33:12 »
£120 to supply part, remove, weld new part in and refit. I offered to bring just the CATs but they wanted the car to ensure correct alignment  :y

I would rather do it myself and save but I need to use the car to go to Doncaster and back Monday and its a bank holiday Friday.

I just hope I don't find out the CAT is stuffed after all this!
« Last Edit: 01 April 2015, 12:38:30 by steve6367 »
Logged
2.2 CDX Estate (broken), 2.5 CD Salon, 2.5 CD Estate LPG

steve6367

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1613
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #33 on: 01 April 2015, 12:36:17 »
Quote from: steve6367 on 01 April 2015, 12:33:12
£120 to supply part, remove, weld new part in and refit. I offered to bring just the CATs but they wanted the car to ensure correct alignment  :y

I would rather do it myself and save but I need to use the car to go to Doncaster and back Monday and its a bank holiday Friday.

I just hope I don't find out the CAT is stuffed after all this!

No idea how I posted that twice!
« Last Edit: 01 April 2015, 12:38:01 by steve6367 »
Logged
2.2 CDX Estate (broken), 2.5 CD Salon, 2.5 CD Estate LPG

tunnie

  • Get A Life!!
  • *****
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37523
    • Zafira Tourer & BMW 435i
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #34 on: 01 April 2015, 14:07:38 »
Quote from: steve6367 on 01 April 2015, 12:33:12
£120 to supply part, remove, weld new part in and refit. I offered to bring just the CATs but they wanted the car to ensure correct alignment  :y

I would rather do it myself and save but I need to use the car to go to Doncaster and back Monday and its a bank holiday Friday.

I just hope I don't find out the CAT is stuffed after all this!

Difficult to say, I've never had emissions light on. Even when it's completely blown, and not even connected to the exhaust.  :-\
Logged

flyer 0712

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 2713
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #35 on: 01 April 2015, 17:03:49 »
Strange that......blueron......should have stated that about his 2.2 with the emissions light coming on and changing fuel cured it.....I have never had a 2.2 that the emissions light came on until now.....After a week or so of  owning this latest one the light came on.....I put cat clean through the system just as a matter of service and after a few days .out went the light....so all was good....i dont do a lot of miles and I always use shell v.plus petrol....on my return from Nottingham i ran low on fuel so stopped to get some and by mistake put in ordinary unleaded and a day later on came the light again....having read ...bluerons....item on here i wondered if that was the reason for my light coming on,so i filled up with v,power and a day or so after out went the light....Now is this just coincidence  or what...as surely the motor is meant to run ok on ordinary unleaded is it not...... :-\ :-\ :-\

Logged

steve6367

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1613
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #36 on: 01 April 2015, 17:48:25 »
O2 Sensor 1 (pre CAT:



O2 Sensor 2 (post CAT):



Should sensor 2 be cycling like that? Or static?

Many thanks

Steve

Logged
2.2 CDX Estate (broken), 2.5 CD Salon, 2.5 CD Estate LPG

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 105932
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #37 on: 01 April 2015, 21:54:33 »
CAT looks stuffed to me :(

Get a good 2nd hand one.

For Monday, just drive it with the EML on, if time is against you. The cat is stuffed anyway.
Logged
Grumpy old man

steve6367

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1613
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #38 on: 01 April 2015, 22:23:20 »
Quote from: TheBoy on 01 April 2015, 21:54:33
CAT looks stuffed to me :(

Get a good 2nd hand one.

For Monday, just drive it with the EML on, if time is against you. The cat is stuffed anyway.

Thank you

It should be a straight line? Lean?

Quandary now is weather to risk the flexi falling apart or get that welded up and then deal with the CAT later.

Logged
2.2 CDX Estate (broken), 2.5 CD Salon, 2.5 CD Estate LPG

tunnie

  • Get A Life!!
  • *****
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37523
    • Zafira Tourer & BMW 435i
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #39 on: 01 April 2015, 22:29:34 »
Depends how long before its changed, could survive a bit longer
Logged

steve6367

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1613
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #40 on: 01 April 2015, 22:33:23 »
Am I feeling lucky....  :D
Logged
2.2 CDX Estate (broken), 2.5 CD Salon, 2.5 CD Estate LPG

Marks DTM Calib

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • West Bridgford
  • Posts: 33839
  • Git!
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #41 on: 02 April 2015, 08:50:52 »
If the flexi is goosed then air will be drawn in after the mixture control O2 sensor.....the result will be the code you are seeing.
Logged

steve6367

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1613
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #42 on: 02 April 2015, 16:19:27 »
The noise has stopped, although based TB's comments I suspect the CAT may still give me issues - I will report back!



Logged
2.2 CDX Estate (broken), 2.5 CD Salon, 2.5 CD Estate LPG

Steve B

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Leicestershire
  • Posts: 3638
    • '52' MV6 3.2 Saloon
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #43 on: 02 April 2015, 17:59:50 »
Well That was quick  :y
Logged

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 105932
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: P0420 - Catalyst Efficency Above Threshold - on 2.2
« Reply #44 on: 02 April 2015, 19:20:08 »
Quote from: Marks DTM Calib on 02 April 2015, 08:50:52
If the flexi is goosed then air will be drawn in after the mixture control O2 sensor.....the result will be the code you are seeing.
But to exactly follow front sensor?  :-\
Logged
Grumpy old man
Pages: 1 2 [3] 4  All   Go Up
« previous next »
 

Page created in 0.038 seconds with 18 queries.