1993 4runner code 25 intermittent trip

My 4runner trips occasionally on code 25. I have reset the ECM only to have it trip 50 - 100km later. The first time it tripped was just after I cleaned my K&N airfilter. It has tripped under acceleration and while cruising on the hwy. I have tried fuel injector cleaner to no avail. Any help would be appreciated.

Reply to
mike
Loading thread data ...

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.