my 20 hdi auto box . when cold and pulling away it changes up to 2nd then back to 1st then back to 2nd 3rd and 4th and when i take my foot of the gas to slow down the car shudders. when the car has gone a short distance its ok. no fault codes shown.53 reg.

dave c, January 2010

You may have a problem with the range switch. It may be telling the computer that you have selected first/second and as this is seen as an OK request, no fault codes will be set. To verify look at live data with a scanner that can see this information. Check TPS and speed sensor readings as well.

mags, January 2010