Hi all, wonder if you can help me with a problem I have had for some time now.Car is C5 2.2 Hdi exclusive estate (Manual)when I put my foot down nothing happens for about 5 seconds then it picks up no problem, put it in cruise control and it will only keep at the speed while on the flat, as soon as a small incline it slows down and I have to plant my foot on the gas to get the speed back to cruise speed, I have replaced the MAF hoping that may be the cause but no.I tow a caravan and it will be a major problem if I can't get it fixed.