Peugeot Partner M59 stutters in 2nd gear when AC is on

[Ohfishalee]

As the title says, I experience this situation when I am driving along in 2nd gear and it stutters briefly and then drives normally.

What could be the cause of this.

I do not notice it when the AC is off.

[Ohfishalee]

still stuttering but i discovered a leak in the WIF sensor that scres into the fuel filter housing. pipe thread tape on the threads and no more fuel drain in the morning!