1GR-FE long term fuel trim ranges

Hello,

I'm not throwing any codes or anything, but being that the truck is getting up there in miles I figured I'd take a proactive look at the data it's showing me.

I'm getting LTFTs as below:


This is on cruise at about 65, as flat and level as it gets around here. Those values (~7/10) were pretty consistent bit I did get some fluctuations (as expected) with throttle changes or downhills, but I don't know of these values are accurate:


What are the acceptable ranges for LTFT with these trucks? If I'm running too lean, my bet is fuel filter - 250k-ish (edit: miles, not km) on the original. Might be worth putting in a URD this spring when I do some more overhaul work.

Thanks.

 

whens the last time you cleaned your MAF, ran some injector cleaner? under 20% is okish (wont throw a cel) but that 7-10 is on the higher side, but brand new my truck would see around a consistent 4-5% at cruising speeds.

 

MAF and TB should be pretty clean (did it this last summer) and I run a couple bottles of Techron every oil change. Thanks for the numbers confirmation. I'm gonna give the MAF/TB another clean when it warms up and see what the numbers do, and probably end up changing the fuel pump anyway when I tear the ass end out for high cut and frame paint.

 

Assuming 250k km which is around 150k mi, that is going to be my timeframe on replacing with a URD pump setup with external filter. Currently at 130k mi.

 

250k miles hah!

 

Have a link? I'm up there in miles also and been thinking about one before it goes on it's own.

 

haha saw the speed in kmh sooo....but 250k miles, yeaaaaa its time for a pump!

https://urdusa.com/urd-2005-tacoma-v6-fuel-pumpfilter-upgrade-kit/