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 O2 sensor foolers?

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Pete Roper
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Join date : 2013-05-29
Age : 59

PostSubject: O2 sensor foolers?   Fri Oct 17, 2014 8:16 pm

Well. I got the roller top end installed and timed up on this stelvio. Pumped up the tensioners as best I could but could see the chIns were very worn. Spun it over for 30 seconds with the lids off to see what was happening then put the plugs back in, said a quick prayer and hit the go button. Chain on the right cylinder jumped three teeth instantly and bent the inlets. SHIT! Oh well, it was worth a try. And all because someone believed these bits of shit were a good idea.

Expensive mistake on a bike with less than 30,000kms on.

Pete
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LBC Tenni
Nibbio
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Join date : 2014-06-05

PostSubject: Re: O2 sensor foolers?   Fri Oct 17, 2014 9:35 pm

Somewhere in the sky over Bungendore there must float a finely crafted cloud of curse words spun from this turn of events.  Mad
I can imagine your frustration Pete. It'd be enough to make me come unglued.
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beetle
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Join date : 2013-09-30

PostSubject: Re: O2 sensor foolers?   Fri Oct 17, 2014 11:34 pm

Abandon all hope. Fatduc's (and their ilk) are the Divils work. The Divil, I tells ya.



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Last edited by beetle on Fri Oct 17, 2014 11:40 pm; edited 1 time in total
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Pete Roper
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PostSubject: Re: O2 sensor foolers?   Fri Oct 17, 2014 11:39 pm

It's just a shame. It's a 30,000km bike that looks like a 150,000 engine in it!

Pete
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Boysie
Carlotto
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Posts : 35
Join date : 2014-04-29

PostSubject: Re: O2 sensor foolers?   Sat Oct 18, 2014 12:33 am

I'm lost... How does an O2 modifier wear the cam chain? Or have I miss read.. Possible it's early Smile
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little750
Grignapoco
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Age : 61

PostSubject: Re: O2 sensor foolers?   Sat Oct 18, 2014 12:39 am

Fuel in oil.
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Pete Roper
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PostSubject: Re: O2 sensor foolers?   Sat Oct 18, 2014 1:14 am

Lots and lots of fucking fuel.

Enough fuel to wear a 4 thou wear ridge in Nicasil in??? Well, I don't think these bits of shit were put in more than 5,000 km ago.

Then because the oil has become so contaminated its trashed the chains, (Chains don't 'Stretch'. They get longer because the pins wear if they are unlubricated. Morse Silent Chains, also known as inverted tooth chains, are fairly hardy but petrol isn't a good lubricant.).

The big problem with the O2 sensor foolers is that they seem to not work in a consistent fashion. At some loads and throttle openings they can seem to work. At others, or even in different conditions, they can cause the fueling to be completely different.

Very early in the piece, I can't remember if it was on my G11 or my G12, I experimented with a 'Fat Duc'. While it did smooth out the bottom end it also caused the ECU to throw up a 'Service' warning and I could feel the bike fall into 'Limp' mode while riding. Examination of the plugs showed a really rich condition. I pissed it off quick-smart.

I know that a lot of people will swear their bikes run magnificently with these devices. Perhaps they do. Perhaps they DON'T cause these terrible issues unless you commonly ride at exactly the right or *Wrong*, place in terms of revs, load or speed. I really don't know. All I can say is that I've consistently seen what I would consider 'Suspicious' symptoms in several engines fitted with these devices and now have this great piece of crap on my workbench at my busiest time of year.

Do I *Know* for sure that this is the source of the problem? No, I don't. But after forty years in this bizznizz I think I'm as well qualified as anybody to join the fucking dots.

Pete
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grisorosso
Grignapoco
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Age : 61

PostSubject: Re: O2 sensor foolers?   Sat Oct 18, 2014 5:18 am

Very similar (if not the same 2c resistor and LED lamp in a box) thing WAS the rage for turbo diesels some 10 years ago. Bad kaka.
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Boysie
Carlotto
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PostSubject: Re: O2 sensor foolers?   Tue Oct 28, 2014 10:44 am

No need for an O2 controller on the Goose as Marks map has done the trick and my bike now runs better than ever..

What I wanted to say though, and I’m not sure this is correct, but the O2 controller on my 690 KTM seems to work very well and the guy who makes them claims they are not the resistor type but somehow control the square wave voltage.

From his advert

This mod is not a fixed resistor-type mod it controls the square wave voltage signal from the O2 sensor to the ECU,
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pauldaytona
Fra Cristoforo
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PostSubject: Re: O2 sensor foolers?   Tue Oct 28, 2014 3:03 pm

Boysie wrote:
No need for an O2 controller on the Goose as Marks map has done the trick and my bike now runs better than ever..

What I wanted to say though, and I’m not sure this is correct, but the O2 controller on my 690 KTM seems to work very well and the guy who makes them claims they are not the resistor type but somehow control the square wave voltage.

From his advert

This mod is not a fixed resistor-type mod it controls the square wave voltage signal from the O2 sensor to the ECU,

Well suppose that is only because else you get a service message. The ecu checks is if there a not a fixed value, because then the sensor is not working
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PostSubject: Re: O2 sensor foolers?   Today at 8:22 pm

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