Ford Mondeo fault

[Pete,A]

I have a Mk1 2.0 Mondeo.The engine hesitates at about 2,000 rpm, on light throttle. Accelerate, and it clears and runs ok.It idles ok. It doesn't feel like a missfire on the electrical side.It is more like a weak mixture.I have checked vacuum pipes, and changed the potentiometer. Any ideas.

[v64paul]

not too much experience on the zetec myself, if you feel it's a fuel starvation issue; try the fuel filter? try the mondeo enthuiasts group forum www.fordmondeo.org

[Pete,A]

Thanks for the advice. I visited the website you suggested, and found several questions regarding the same fault.Quite a few answers suggested blanking off the EGR valve. I blanked off the vacuum pipe to it, and at last the fault has cleared. Thanks.