TimsterC Posted June 28, 2019 Report Share Posted June 28, 2019 I seem to be the latest victim of the dreaded Lambda levels too high. I think my exhaust is blowing a bit, but the MOT garage said that it wasn't. Time to get a second opinion I think. Link to comment Share on other sites More sharing options...
Jason986S Posted June 28, 2019 Report Share Posted June 28, 2019 A blow will effect this, so it’s worth getting that sorted if necessary before changing sensors. Link to comment Share on other sites More sharing options...
TimsterC Posted June 28, 2019 Author Report Share Posted June 28, 2019 26 minutes ago, Jason986S said: A blow will effect this, so it’s worth getting that sorted if necessary before changing sensors. Thanks Link to comment Share on other sites More sharing options...
Sanky Posted June 28, 2019 Report Share Posted June 28, 2019 Do you use the car everyday, might want to take it for a long run. Then have it tested again Link to comment Share on other sites More sharing options...
Boxob Posted June 28, 2019 Report Share Posted June 28, 2019 It can be an exhaust leak (mine was). Check all joints. Link to comment Share on other sites More sharing options...
huytonman Posted June 28, 2019 Report Share Posted June 28, 2019 Mine showed high (failing) readings at my last MOT and the next is due in July. I had just changed the back box but knew it wasnt leaking and the mechanic confirmed this. His solution was to do as suggested go out for a blast and come straight back then it passed (just). I checked back through old MOT's and saw that it had struggled since 2010 and asked Ray Northway to check it over when it was serviced last month and no issues reported so now I'll see if it crops up again in two weeks at the next MOT (but this time I'll give it an extended run prior to the test). One suggestion was to take it to Surrey Rolling road for them to do a thorough diagnostic - if I do have a problem that may be the next step. Keith Link to comment Share on other sites More sharing options...
edc Posted June 28, 2019 Report Share Posted June 28, 2019 I have been to Charlie at Surrey Rolling Road on many occasions but be is not a diagnostic specialist. He can put the car on the Dyno with a lambda probe and measure the afr, make some assumptions based on afr and the power output etc. Link to comment Share on other sites More sharing options...
huytonman Posted July 3, 2019 Report Share Posted July 3, 2019 On 6/28/2019 at 5:39 PM, edc said: I have been to Charlie at Surrey Rolling Road on many occasions but be is not a diagnostic specialist. He can put the car on the Dyno with a lambda probe and measure the afr, make some assumptions based on afr and the power output etc. Thanks, thats good to know - hopefully i wont be needing his services though cheers keith Link to comment Share on other sites More sharing options...
edc Posted July 3, 2019 Report Share Posted July 3, 2019 2 hours ago, huytonman said: Thanks, thats good to know - hopefully i wont be needing his services though cheers keith Don't get me wrong. Charlie is a top bloke. I've been on his Dyno probably half a dozen times. I just think you are barking up the wrong tree and getting your expectations up in the wrong place for your fault finding. If he is close to you then speak to Eporsch. They are maybe 7 miles away if that. Link to comment Share on other sites More sharing options...
el 3.2S Posted July 3, 2019 Report Share Posted July 3, 2019 On 28 de junio de 2019 at 12:51 PM, TimsterC said: I seem to be the latest victim of the dreaded Lambda levels too high. I think my exhaust is blowing a bit, but the MOT garage said that it wasn't. Time to get a second opinion I think. I have had slightly high Lambda levels on the last two tests. Both times they have shoved some kitchen paper in the tailpipes. This lowered the readings and my car passed. Link to comment Share on other sites More sharing options...
Danncus Posted July 6, 2019 Report Share Posted July 6, 2019 On 7/3/2019 at 10:27 PM, el 3.2S said: I have had slightly high Lambda levels on the last two tests. Both times they have shoved some kitchen paper in the tailpipes. This lowered the readings and my car passed. Can you describe how this is done? Thanks Link to comment Share on other sites More sharing options...
Tritonkev Posted July 6, 2019 Report Share Posted July 6, 2019 The tester struggled to get my boxter through he said it only takes a pinhole in the exhaust He got it through by raising the rpm for the test but only just Link to comment Share on other sites More sharing options...
TimsterC Posted July 7, 2019 Author Report Share Posted July 7, 2019 Got mine through, eventually. Some RedX type fuel treatment and a Road Test (thrashing) did the trick. I’ll know for next year. Link to comment Share on other sites More sharing options...
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