I have a 1994 e320, the problem started after i pumped regular gas in it. then it started idling up and down only when in park or neutral. then after time it started doing it in drive a little. i stayed like that for a while.
I cleaned the intake with intake cleaner, i changed the aprk plugs with the best bosch + 4 plantinums, and no change. i changed the maf then the revving an idling just got faster, but not fluctuating as much. but it really gets bad in drive when stopped, ( looks like i have hydraulics).
the car is still hesitating like crazy, i even tried fuel injection cleaner.
the idle will not settle in the 700 zone, it keeps howing rough idle.
i even checked the egr valve with a vacuum, seems fine.
now i have no check engine light, i did before i changed the maf.
any ideas?
thanks