long term fuel trim bank 1

[relisys77]

My cars running at -19.5% is that normal I checked my othe micra and its 20.3% what should they be at and how do I sort it out

 

[frank]

it depends how you drive them i guess, but they both sound a bit high, 1 is adding and 1 is pulling fuel eh, what are the short term trims ?

 

[relisys77]

Short term is between -3.1 and 0.0 at tick over wthats 760rpm its also only doing 100 miles to half a tank

 

[relisys77]

The one with the -19% is just used about town and the other is just general mixed driving

 

[frank]

i would check that its closed looping ok if its drinking fuel, i have a cheap volt meter on my dash, and it shows that i,m closed looping for about 90% of my commute (ie, the mixture is 14.7:1)
your codereader might be able to display it too ?

 

[relisys77]

I'll have a look at it the cars not mice to drive just now down on power drinking fuel. Never relised how bad it was till I bought another one and its quicker and better on fuel

 

[Dinky DK]

100 miles to half a tank? Im gettin 130miles to £20 (15.7L at last fill bout 3/4 of a tank from red). Dont know if this is usual as only had the car a few weeks but mpg seems a touch low to me? Dont have a code reader or volt meter so cant test it myself yet. Possibly the sam issue?

 

[frank]

100 miles to half a tank? Im gettin 130miles to £20 (15.7L at last fill bout 3/4 of a tank from red). Dont know if this is usual as only had the car a few weeks but mpg seems a touch low to me? Dont have a code reader or volt meter so cant test it myself yet. Possibly the sam issue?

sounds about right, mine always seems to average 70 miles per tenner.
i did over 60 mpg on a cruise down the m5 last year, but if i rag it its nearer 15 mpg

 

[Dinky DK]

Thats good to know, had heard autos can drink more than a manual anyway. Specialy wiv a heavy foot n sport button on lol