Smitherines
12-29-2010, 04:58 PM
hey guys, my 540 just started running rough about three weeks ago, and it has a couple codes for lambda control on right now. idling the car runs rough, especially when cold, and when it warms up, it seems to get a bit smoother, but still not normal. there are no codes for O2 sensors, just the lambda control. the idle seems to surge as well. i've replaced the idle control valve and i'm having the same results.
can anyone shed some light on this issue? also, check for the hissing sound in the video, I think it's probably a vaccum leak, but i cannot locate it, it sounds like its coming from the intake manifold.
http://i204.photobucket.com/albums/bb65/John2619/th_IMG_1149-1.jpg (http://s204.photobucket.com/albums/bb65/John2619/?action=view¤t=IMG_1149-1.mp4)
can anyone shed some light on this issue? also, check for the hissing sound in the video, I think it's probably a vaccum leak, but i cannot locate it, it sounds like its coming from the intake manifold.
http://i204.photobucket.com/albums/bb65/John2619/th_IMG_1149-1.jpg (http://s204.photobucket.com/albums/bb65/John2619/?action=view¤t=IMG_1149-1.mp4)