Hey guys i have a 1990 LS400
i recently cleaned out the egr port and the PCV port. and a day later the car shakes when it drives. code 25 comes up for air fuel device lean, feels like a miss fire but it is not miss firing at all i checked all vacuum hoses there fine so far have not found a intake leak i only have an exhaust leak before the main cat, thats about it.
and yes this kills the power too u have to step a bit farther for it to go. i am so puzzled i even cleaned the AMF. im starting to think that i should take the intake runners apart n clean it out. but yea every time u go into reverse it studders/ shakes. and same when u drive.
some say it could be the o2 sensor but i dont know at the moment.
thanks for your responses