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 Posted: Thu Jun 07, 2012 11:16 am |
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Joined: May 29, 2012
Posts: 12
Trade Rating: 0
Location: barnsley
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Anyone got any ideas im all out now.... My peugeot 206 1.4 8v has failed its mot on emissions, i then went ahead with a full service...failed again.....new o2 sensor...failed again...new map sensor...failed again...new cat failed again. Its only failing on CO the first time it read 0.65 and after all the new parts its down to 0.5 and needs to be no more than 0.3 for a pass. Oh its also been hooked up-to a reader and it was showing no fault codes???? Anyone.....anything???
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| this 206 is driving me nuts but shes plenty of life left yet.......... | |
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Posted: Thu Jun 07, 2012 11:28 am |
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Joined: Feb 03, 2012
Posts: 87
Trade Rating: 0
Location: newark
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Give it a good thrash before testing! Get the cat nice and hot as this is when they work best.
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Posted: Thu Jun 07, 2012 11:55 am |
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Joined: Jan 29, 2011
Posts: 6526
Trade Rating: +10
Location: Westhoughton, Lancashire
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Fill up with Shell V Power, give it a good run and then check the emissions. Might need a couple of tanks to give the engine a good clean but worth the cost to get the emissions down.
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Posted: Thu Jun 07, 2012 12:11 pm |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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Read the live data, just throwing replacement parts at a car in an attempt to fix it isnt the way to do things 
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| Toyota C-HR GR Sport 2.0 Hybrid with JBL & Alcantara packs. | |
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Posted: Thu Jun 07, 2012 12:46 pm |
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Joined: Feb 07, 2010
Posts: 13077
Trade Rating: +65
Location: England
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Slip the MOT'er £20 to not test the emissions.
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Posted: Thu Jun 07, 2012 12:52 pm |
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Joined: Jul 21, 2011
Posts: 791
Trade Rating: +5
Location: Bourne, Lincs
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give it a good thrash before testing or this:
| Lee wrote: |
| Slip the MOT'er £20 to not test the emissions. |
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| Ford Focus RS in white of course
filled with all sorts of goodies | |
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Posted: Thu Jun 07, 2012 12:57 pm |
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Joined: Mar 27, 2010
Posts: 3017
Trade Rating: 0
Location: Running from Ant and Lee and Adam...........
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| marc206 wrote: |
give it a good thrash before testing or this:
| Lee wrote: |
| Slip the MOT'er £20 to not test the emissions. |
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No No No, test the emissions. Just stick the pipe up a shiney new Beemer 
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Posted: Thu Jun 07, 2012 1:06 pm |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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Its just as easy to fix the fault with the car
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| Toyota C-HR GR Sport 2.0 Hybrid with JBL & Alcantara packs. | |
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Posted: Thu Jun 07, 2012 1:20 pm |
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Joined: May 29, 2012
Posts: 12
Trade Rating: 0
Location: barnsley
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ive been checking as its just high CO readings to me indicates its been starved of air or overfueled , i forgot to mention it passes on natural idle, however i have just took the air box off to check if it is blocked in any way and found that the pipe/box from the front arch to the airbox is filled with water which in theory could allow it to pass on idle but fail on "fast idle" as it only allows enough air for burning efficient on tick over, anyway im charging my drill now and going to bang a couple of drain holes into it and see how it goes on emissions number 6
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| this 206 is driving me nuts but shes plenty of life left yet.......... | |
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Posted: Thu Jun 07, 2012 1:26 pm |
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Joined: Sep 22, 2010
Posts: 38
Trade Rating: 0
Location: Inverurie
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I had a 206 that failed on emissions several times, replaced cat, replaced sensor etc... Turned out it was the wiring loom from the engine going to one of the sensors.. But i didnt have the money to get the loom sorted..So i ended up getting rid of the car 
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Posted: Thu Jun 07, 2012 1:34 pm |
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Joined: Feb 07, 2010
Posts: 13077
Trade Rating: +65
Location: England
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| Ash wrote: |
| marc206 wrote: |
give it a good thrash before testing or this:
| Lee wrote: |
| Slip the MOT'er £20 to not test the emissions. |
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No No No, test the emissions. Just stick the pipe up a shiney new Beemer |
That's what they normally do, as they still have to run a test, but just put a new car on the ramps.
Emissions test is a load of bollox anyway.
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Posted: Thu Jun 07, 2012 3:19 pm |
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Joined: May 29, 2012
Posts: 12
Trade Rating: 0
Location: barnsley
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just took it for a test drive after removing the water from the airbox feed pipe (comes from nsf arch to under airbox) car goes like mad now..... most power its had since ive owned it, defo more efficient fuel burning now lets see on the emissions test
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| this 206 is driving me nuts but shes plenty of life left yet.......... | |
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Posted: Thu Jun 07, 2012 3:33 pm |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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it is very common to have water in the airbox down pipe....
even more common to suck water up and mess up the MAP sensor too....esp. under heavy rain
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Posted: Fri Jun 08, 2012 2:18 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| x_lyns_x wrote: |
| just took it for a test drive after removing the water from the airbox feed pipe (comes from nsf arch to under airbox) car goes like mad now..... most power its had since ive owned it, defo more efficient fuel burning now lets see on the emissions test |
Good on you.
That box is the resonator by the way which is well known to get damaged allowing water to get-in.
It might be worth examining it and replacing as it's bound to have a problem by the sound of it.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Fri Jun 08, 2012 3:12 am |
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Joined: Feb 07, 2010
Posts: 2505
Trade Rating: +19
Location: West mids
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Try sOme petrol additive such as red x then take it for a spirited drive.
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