My sister has a 2003 clk320 that is stalling when you accelerate but cranks back up after. At first I thought it was low fuel so I put fresh gas in and added a bottle of techron. The car drive fine for me and did not stall. She gets I. The car and tries to go and she says it stops on her and turns back on. I'm driving the car now and it's seems to idle fine. I took it to autozone to see if it threw any codes and no codes came up. Has anyone else experienced this or can lead me to what could be wrong?

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1972 220d gone lived a good life
1972 280se gone but not forgotten
1978 300D the best i ever had
1977 350se speed racer gone
1995 honda accord lx coupe victim of the growing family
1988 300e gone but not forgotten