Running with Lambda dissconected?
I suspect a dicky lambda sensor on my 1.8ts. I am getting poor mileage, hunting at idle and a kind of jerking or kangarooing if I am at about 80 KPH or more, back off the gass peddle and then press the pedal again. I also get a surge of power from 3000RPM and maybe a bit sluggish at lower revs.
I have been through every other possibility I can think of exept the valve for crankcase ventilation and the lambda sensor.
I dissconnect the lambda and found the hunting idle smoothed out to 900RPM. Took it for a short run and found the surging at 3000 was gone and it felt better at lower revs. I need to get on the highway to test the kangarooing though.
Is it ok to run the engine with the lambda disconnected? l I have a new one ordered as well as a cable so I can hook up some diagnostic sofware and see whats going on.