G60 rev bouncing?

[potatonet 0]

OK so I know I had this problem when I first got my car and I cant remember what it was (partially because it got fixed by a shop).

 

cold start the car and the revs bounce from 1000 rpm to 2000 rpm and back and forth for a bit till it warms up... anyone?

 

enrichment? ISV?

 

I ask because a buddy of mine is having the same problem

 

Thanks,

 

Jonathan

[task 0]

check the hose from ecu for cracks should be exact. 1m long, and try to change the blue temp sensor ? it seems every thing that goes wrong with the g60 model is related to this stupid sensor.also check for bad grounds. I still can't figure out why mine wont restart after it warms up.