Rough exceleration with cold engine

[rstmartin]

2002 Boxster S. I'm experiencing rough exceleration in all gears until the engine warms up to 180. No CEL... What might be causing this?

[por911]

Here are some things that really smoothed ours out when cold, warm-up phase(assuming the car is in a good state of tune):

1)clean throttle body

2)run through a couple bottles of techron concentrate

3)motor & trans mounts

4)fuel injector o-rings(upper and lower)

*comment: I found after installation of the new o-rings, quicker starts, much smoother, improved detination quality, overall performance was better.

Having said that, the mounts smoothed out the shifting, especially when cold. It also greatly reduced vibrations and some other noises. You might also check your AOS. When ours was going, one of the symptoms was a very rough idle, especially when it was in warm-up phase.

Regards