Quote:
Originally posted by BMW740i@Jan 26 2004, 12:50 PM
I just recently purchased a 1995 740i and the car for some reason at the stop light will shutter or shake a little. Anybody have any clue? could it be the oxygen sensor? Any help would be great. Thanks |
There is no way in the world for any of us to tell you what the problem is.
Oxygen sensors are very unlikely to cause a rough idle on these cars. Crankcase vent valve is a likely suspect (it's actually a plate on the back of the intake manifold), valve cover gasket's leaking-not likely, but possible (sucking air, not just leaking oil), catalytic converter-possible, but it would cause problems above idle as well.
You could be looking at a spark plug, fuel injector, ignition coil, idle valve, intake vacuum leak from various sources, a sensor malfunction of some sort (which would usually set a check engine light), bad fuel, etc.
You can check all these things to the best of your ability, but we can't say for sure what the problem is.
