[nicholas6706]

I'm attempting to fix a persistent n52 idle vibration. When the rpm's drop after stopping, it will hang at ~800rpm for a few seconds before coming back down to 600. I've smoke-tested the intake and there are no vacuum leaks. There are no engine codes. I've replaced the following (all OE spec):

• Entire engine (spun crankhub)
• Eccentric shaft sensor
• Valvetronic motor
• Throttle Body
• 6x sparkplugs + coils
• All gaskets (Oil pan, VCG, OFHG, TB, intake manifold)
• 2x vanos solenoids
• PCV system
• Engine mounts
• 2x o2 sensors
• 6x injectors
• Crankshaft pos sensor
• Camshaft pos sensor

Any help would be appreciated.

[rothwem]

Originally Posted by nicholas6706

I'm attempting to fix a persistent n52 idle vibration. When the rpm's drop after stopping, it will hang at ~800rpm for a few seconds before coming back down to 600. I've smoke-tested the intake and there are no vacuum leaks. There are no engine codes. I've replaced the following (all OE spec):

• Entire engine (spun crankhub)
• Eccentric shaft sensor
• Valvetronic motor
• Throttle Body
• 6x sparkplugs + coils
• All gaskets (Oil pan, VCG, OFHG, TB, intake manifold)
• 2x vanos solenoids
• PCV system
• Engine mounts
• 2x o2 sensors
• 6x injectors
• Crankshaft pos sensor
• Camshaft pos sensor

Any help would be appreciated.

Shit man, you've basically done the whole car. Could it be in the transmission? Any difference between neutral and drive?