97 C230 running rough when cold

[dyazdani]

I have a 1997 C230 that has an issue with running while the engine is cold.

It hesitates to accelerate when first started but runs great after the engine is up to temperature. I don't live in a cold climate (Southern Arkansas). It was about 55 deg out the other day and I had to drive about 1/2 mile before it smoothed out.

Is there a temperature sensor somwhere that adjusts the fuel injection that might be non-functional? Any other ideas??

Thanks!