My car is in at MMC just now for the same problem, except mines is a little more extreme and often, they thought it was the O2 sensors so both were changed, went to collect the car today and its still shafted, so no idea what up with it.111Robin wrote:It's not on the overrun which is what you're describing, it's on a constant throttle, crusing at 70-80, there's occasionally a 2-3 second slight drop in power. It doesn't lurch or draw up, you can just feel the power drop off, then it just returns to normal. Does it approx. twice on a 2-hour journey. I've hooled up an OBD-II reader but it wouldn't "talk" to the ECU so don't know if there is a fault recorded.
My engine management light was constantly on also, however this has gone out but the problem persists, also get very very lumpy idle.
