General Maxed out fuel trims?

[I-luv-em-all]

Ya I don't know much about fuel trims, and all of the previous posted all had some kind of tuning problem and what not. Well I don't have any aftermarket fuel or controller or anything. Just a fuel pump rewire. And all of my fuel trims are just high, all of them are around 137.9, 138.9, 139.9%. Any clues?

 

[trbotaln]

not sure but you might have a bad o2 sensor.

 

[trbotaln]

also check for boost leaks

 

[I-luv-em-all]

anything else??

 

[Evil1gDsm]

I'm having the same damn problem bro...But i think i have mine pinned at a bad ECU...Good luck..Fuel trims can suck at times...dan

 

[liquordrunk]

they should be at 100% have you triedto adjust them at idle first.

 

[IHeartTurbo]

not sure but you might have a bad o2 sensor.

All you have to do to find this out is see if it cycles. See if it goes from .2v or so up to .8v or so at cruise. If it doesn't, your o2s is bad or the wires are bad.

 

[I-luv-em-all]

they should be at 100% have you triedto adjust them at idle first.

How would you adjust them without any fuel controller?

 

[BigRb247]

You wouldn't. Get a standalone, wideband O2...and they should NOT all be at 100%