Chit-Chat
This page is for any comments, pictures, stories or information you might want to impart to the site that don't necessarily
fit anywhere else on the website.
There are rules!
Primarily don't be rude, offensive or obnoxious, for more details CLICK HERE
See Older Posts
ROD¹ said :-
OK, I have absolutely no experience of this, so I am only repeating what I have heard.
I am told that not all code reading tools will permanently delete the fault code, but it can be permanently deleted by disconnecting the battery, pressing and holding the horn to use any residual current in the vehicle, and then reconnect the battery after a 30 minute wait.
As I say I do not have first hand experience so happy for anyone with knowledge to comment further.
29/04/2025 12:14:00 UTC
Upt'North ¹ said :-
Thanks Rod.
I was told if I stand on one leg, wave my arms wildly about and touch the battery terminal with my tongue it would probably work. It didn't.
What you're suggesting Rod is a full system reset. Done already I'm afraid. Dint work. Light came back on. Does anyone know a cure for madness.
Upt.
29/04/2025 12:45:30 UTC
Upt'North ¹ said :-
To clarify Rod, I'm not aware (and I've looked) of any code reader which will permanently delete faults if the fault persists. Hence the EMU has been out and on the bench but couldn't be read.
I might try licking the terminal again.
It can't hurt!
29/04/2025 12:49:06 UTC
Ian Soady¹ said :-
I'd try the magic box. For a fiver you're not risking much. Unless it fries the ECU......
29/04/2025 14:51:42 UTC
Ren - The Ed¹ said :-
A quick google tells me a lambda extender (lambda spacer) is... right. It screws into the exhaust where the lambda sensor should be, then has a short tube then the threads to screw the lambda sensor into. As such the sensor is out of the serious flow of the exhaust, just getting a whiff of the passing gases. This allows the sensor to think everything is hunky-dory with the o2 levels even if they ain't.
Now you say you have 2 lambda sensors. I believe there will be one before and one after the catalytic converter? My initial thoughts are thus. The car is 12 years old with 49000 miles. That's 4,000 miles per year. Would I be correct in thinking it is used quite often for shorter journeys rather than occasionally for long journeys? I'm thinking the cat is blocked and the sensors are trying to tell you the readings aren't making sense.
Does it burn any oil by the way?
30/04/2025 07:53:05 UTC
Ren - The Ed¹ said :-
OH and wiring. You might be throwing sensors at the car but if the wire between either of the sensors and the ECU has a high resistance or intermittent short or disconnect then the ECU sez "what's this nonsense/I can't hear the lambda sensor!"
It'd be fiddly as hell but bypass the wiring with fresh wires?
30/04/2025 07:58:09 UTC
Ren - The Ed¹ said :-
Also check for leaks in the exhaust as these mess up the levels of air and exhaust gasses which confuse the lambda sensors. This page is "informative"
https://www.walkerexhaust.com/support/tech-tips/5-steps-to-take-before-replacing...
30/04/2025 08:04:27 UTC
Ren - The Ed¹ said :-
This is worth a read too
https://forum.rac.co.uk/threads/7094-Lambda-Sensors-and-Catalysts...
30/04/2025 08:06:35 UTC
Upt'North ¹ said :-
Thanks Ed, interesting stuff.
The car uses precisely nowt in the oil department. Never had to top it up in over 12 years.
The usage is a little strange in that it doesn't do proper short journeys that often.
The journeys are generally 15 or 20 miles. Park up for an hour then drive home. This usually about twice a week. So with man maths.....about 35 to 40 miles per week but only two trips. So let's say about 200 miles per month, or around 2500 miles per year.
The extra 1500 probably come from the odd trip to Newcastle or diagnostic experts in Ashington. It returns and always has around 63 mpg without trying.
I've had a reply from elsewhere that the Lambda extender did work for someone with a Volvo.
I put a Redex fuel system cleaner in it yesterday and it may get plugged into a Snap-On machine on Friday if my buddy can sort out the loan.
Upt.
30/04/2025 09:15:03 UTC
nab301 said :-
Upt , as mentioned before you need the actual DTC (powertrain) P ****code via a proper code reader / scan tool and then you need to look at live data related to the code , so if the lambda sensor is involved , look at fuel trims and live lambda to see if the lambda sensor is switching correctly and it's not correcting for a lean (air leak)/rich mixture , as Ren says it may be a poor connection wiring fault or even an incompatible replacement sensor but I'm guessing it would default presumably to a base set up and limp mode and as it does 63 mpg and drives fine there can't be a huge amount wrong with it!
Nigel
30/04/2025 17:15:47 UTC
Upt'North ¹ said :-
Nidger....
The "experts" had it on there rig for about two hours and ran every check they said they could carry out and no faults were found. Their best guess is a non oem exhaust and cat which was fitted a couple of years ago. Obviously putting a £2K plus eggshost on a 12 year old Seat Mii is nuts.
This could of course be why the "experts" picked this guess knowing I wouldn't do it?
If it has to stay with us for another couple of years so be it, if the £5 fix works I'll be mightily impressed. I might even pay a tenner!
No, that's daft talk.
Upt.
30/04/2025 18:45:18 UTC
Ian Soady¹ said :-
When I had my Tiger 955i a lot of people recommended O2 sensor eliminators which were just a fixed resistor corresponding to a "correct" value on the actual sensor. This was to eliminate the stumbling around 3000 rpm which was apparently due to the engine hunting to try to get the air/fuel ratio correct. I solved the problem on my bike by remappring the ECU which worked very well. In fact the Tiger's still on the road which is encouraging.
I don't know what that value might be on your car but may be another possible approach.
https://o2eliminators.com/...
01/05/2025 10:10:14 UTC
Upt'North ¹ said :-
I'm thinking a out that one Ian.
It doesn't seem to be a thing on cars, that's got to be down to emissions I would think.
Upt.
02/05/2025 09:14:07 UTC
Ian Soady¹ said :-
Probably true, but the emissions are only checked once a year. Just sayin'
02/05/2025 10:03:49 UTC
nab301 said :-
@ Upt , I didn't realise the cat had been replaced already and why ?, I see some locally manufactured OEM quality, type approved parts available for around £200, part number BM91760H is I think suitable for your application. Maybe email the manufacturer to see if there are known issues with your set up and can offwer advice although they don't sell direct.
Nigel
https://www.bmcatalysts.co.uk/catalogue/details/BM91760H/...
04/05/2025 16:46:11 UTC
Upt'North ¹ said :-
Nigel,
The cat was replaced because of corrosion, the flexi which rotted out was part of the front pipe/cat.
Thanks for the link.
Upt.
04/05/2025 17:09:52 UTC
Rev. Mick. said :-
Well here we are in sunny and cloudy, warm and rainy, hot and windy, Spain.
We went to a "special" club in Malaga last night which was great fun.
Then up in the morning and get ADV 350s in Torremolinos.
They are brilliant fun on the back roads. Up and down hairpins you are never in the wrong gear. The brakes are super good, still foot braking the footboards now and then. Nearly rear ended Bob when he grabbed his clutch and stopped dead pulling out of a car park. The handling is very good, the back end is a bit harsh but it holds the road like glue. Well powerful enough, we were on the motorway and nothing passed us. Pulls up hills with low end grunt and any lag from the belt drive milliseconds.Other than brief motorway little tiny mountain roads across the Sierra Grazamala where this bike is perfect. You get off it every time and you have a smile, it pure fun.
Saw another bike for first time in real life.
08/05/2025 17:28:17 UTC
said :-
08/05/2025 17:31:47 UTC
Upt'North ¹ said :-
Nice pictures the most reverend.
Those classics are pretty ain't they.
I'm thinking Hesketh, an early GT750, Z1 and a Honda 1100?
When bikes were bikes and men drank beer, eeee those were't days.
Upt.
08/05/2025 22:49:16 UTC
Ian Soady¹ said :-
Those Heskeths did look pretty but by all accounts were a bit of a disaster for all concerned. Rushed into production leaving the first buyers to do the quality control. Mind you they'd have been able to afford it. Allegedly they were an attempt at an up to date Vincent twin but with nowehere near the engineering design expertise.
Enthusiast though I am for unloved Brits, I have never had any desire for one.
ps re handlebar mounted back brakes - just one of the things that made me realise I'd made yet another mistake buying the Xmax a few years ago. I too kept pulling the clutch in with associated squealing from the back tyre (and myself). Still if we didn't make mistakes we'd learn nowt. Although I must say I prefer to learn from others' missteps.
09/05/2025 09:55:15 UTC
Name
Comment
Add a RELEVANT link (not required)
Upload an image (not required) -
Uploading...