recently, whenever i start the car up it tends to shudder, rpms drop to about 200 and kicks back up this happens 2-3 times and after that its fine.
recently had 100k service, oil change, filter change, tranny flush. its done it before all that maintenance. i've also had the spark plugs changed at approx 90k. whats causing this? no CEL... thanks.

 

dirty egr/im??

 

i have exactly the same problem on the same car. I did the tune up and i told them about it. Basiclly what they said is that our computer fuel chip is outdated. You need to upgrade that which will cost like 1500$. Also, they said that this problem may dissapear because fuel in winter is different and it tends to casue the problem. Sooooooo
I said fawk the 1500$ and just wait and see waht happends during summer times