Technical Fuel Trim Reset

[richydraper]

I fitted a new Lambda last week and want to reset LTFT and STFT values. i seem to remember that last time i checked, my values were around 30% compensation

but how? Lol

 

[ivand]

Somewhere I have read that it could be done with "clear engine faults". I found that option in scanmaster. Deckchair5 had some posts including these resettings.

PS Have you tried to clean the old lambda first.

 

[richydraper]

i didnt clean the Lambda as it was intermittently shorting to ground so didnt see much point... Its done 93,000 so as i understand it the 'average life' of a Lambda is around 100,000

 

[ivand]

I'm going to clean mine before replacing it with new, as it has only done arround 45000 miles.

Have You tried to reset trims with scanmaster yet?

 

[richydraper]

no i havent got scanmaster i only have FES and proscan at present

 

[ivand]

I also have FES but don't seem to remember if the clear faults is possible to do when there are no trouble codes showing at all.
With my ELM I got several programs as ScanMaster, Scantool and more. Often I use FES and Scanmaster, while scantool makes some problems for installation.
You could give it a try.