"Judder"

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   97 BMW 323i, non-nikasil.

I reckon it might be a fueling issue. When in a closed loop, idle, or a fixed speed/revs the car tends to rock slightly as if its overfueled and starved repeatedly.

Happens when cold and warm.

Any ideas? 

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quarryman Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member I Joined: 06-June-2007 Location: Dublin, Ireland Status: Offline Points: 101	Post Options Post Reply Quote quarryman Report Post Thanks(0) Quote Reply Topic: "Judder" Posted: 06-April-2009 at 14:39
	97 BMW 323i, non-nikasil. I reckon it might be a fueling issue. When in a closed loop, idle, or a fixed speed/revs the car tends to rock slightly as if its overfueled and starved repeatedly. Happens when cold and warm. Any ideas?
	E36 323i Coupe

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Andrew Rolland Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579	Post Options Post Reply Quote Andrew Rolland Report Post Thanks(0) Quote Reply Posted: 07-April-2009 at 20:35
	Try changing the Lambda probe. Could also be a fault with the Mass Air Flow meter or MAF. Diagnostics may pick up a fault. Andrew
	Be exclusive and drive a Petrol 5 Series! Current '13 62 F10 535i MSport Auto Previous '04 04 E60 545i SE Auto '03 53 E60 545i SE Auto (Stolen) '98 S E39 523i SE Auto

Nigel Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 09-November-2002 Status: Offline Points: 6941	Post Options Post Reply Quote Nigel Report Post Thanks(0) Quote Reply Posted: 07-April-2009 at 22:54
	I've just had this kind of issue on my E34 5 series estate. I found the cause of mine by accident, when I leant on the air filter and the engine stalled. In my case it was a split in the rubber that connected the air filter box to the inlet manifold, when you accelerated the engine, the engine moved, opening the split, the engine would stall, close the split, and do it all over again very quickly until the engine stabilised, giving me a judder, and making me look like an "L" driver with kangeroo juice ! Its plagued me for weeks, might be worth a check.
	Best Wishes Nigel