89 560sel california model. It starts OK and drives fine when cold. Once engine gets to operating temp, it stalls if I shut the engine off and start again then tried to move. Or at stop sign, it idles fine but if I give gas a little or a lot to move then it stalls. It acts like vapor lock or no gas enrichment for start from dead stop. It drives fine at normal highway speed. There is no miss or knocks. It just does that when the engine is at normal operating temp or high. Then once started to move forward then it accelarates fine and drives like normal. The problem at starting from the dead stop only.

nobody had a same problem?

I am having the same problem. Did you solve it??