Hesitation on light throttle

[J-FEEZY]

I Don't know but this is what happened to me....

I would ask.. are all coil packs brand new? or were they just checked? I know you said they were new but your description is identical to the way I would describe the problem i had.

First post here. Totally just bought a 2005 X5 3.0i 78,000 miles 3 weeks ago and it did exactly what you describe.

between this and the others I can tell you (only from what ive read not from experience) there are about 5 other causes of this LOL. Ive read and read and read and read and read... you get the point. search search search.

misfire cylinder 3. did the water test everything acted normal when unplugging coil. traded places with coil pack 2 and 3. Misfire on cylinder 2 now.

replaced all 6 coil packs haven't thrown a code in a 100+ miles. Car acceleration and I'll even go as far as to say shifting is smoother WAY smoother. night and day difference from the first drive after I put the coils in.

had the original black and grey bosch coils in there 78,000 miles. Ive heard people say a coil is either good or its bad which is not true and I'm convinced that these coils were deteriorated causing small? misfire (s) how's that sound? anyways they were junk in the car and still not throwing codes. the wife drives the car she doesn't throw codes I drive and im throwing codes. the problem got worse after I replaced the original spark plugs with dealership oem plugs FYI.

ya I had the leak on the boot no I haven't replaced the ccv/oil separator system yet ya i checked the DISA and the flattened out oring bugs me. am i sold on the vanos actually making a difference if i replace it?? sheesh i dont know. could there be some other little shutter or something slight im still fixated on that im determined to find out what thats all about.. I think so lol

[Rewmer]

Just to update this thread. Just got the car back from the transmission specialist who had confirmed the torque convertor was on its way out. I had the whole box overhauled due to the millage - 133K, and she is as smooth as silk now. Thanks to the guys on here who pointed me in this direction, without you I would have still been chasing that miss fire ! Not that I didnt have one cause I did, caused buy me buying cheap coils to try and cure a miss that wasnt there !