23 mpg...really??? - Toyota Yaris Forums

fnkngrv · 07-22-2012, 09:32 PM

I would usually lose about 3mpg with the AC cranked 100% and using it constantly as a point of reference. I am not saying that the 23/24mpg is acceptable for city, just giving you a point of reference. Perhaps an ECU reset by disco the battery for 30 minutes or so to make it relearn your long term fuel trim may help? Other than that have a scangauge connected to see what is happening during load.

Yury · 07-23-2012, 08:01 AM

Quote:

Originally Posted by fnkngrv

I would usually lose about 3mpg with the AC cranked 100% and using it constantly as a point of reference. I am not saying that the 23/24mpg is acceptable for city, just giving you a point of reference. Perhaps an ECU reset by disco the battery for 30 minutes or so to make it relearn your long term fuel trim may help? Other than that have a scangauge connected to see what is happening during load.

the fuel trims are about usual. small single digits under load and about -4 idling. I have seen these numbers in winter too. In my experience if I disconnect the battery long term trims are zeroed but go back within like an hour of driving. I can try, but I don't have much hope.

Btw, no need to keep it disconnected for 30 min. I tried disconnecting for a few minutes and it got the long term trims zeroed just fine.

07-22-2012, 09:32 PM	#1
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	I would usually lose about 3mpg with the AC cranked 100% and using it constantly as a point of reference. I am not saying that the 23/24mpg is acceptable for city, just giving you a point of reference. Perhaps an ECU reset by disco the battery for 30 minutes or so to make it relearn your long term fuel trim may help? Other than that have a scangauge connected to see what is happening during load. __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

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