Hi guys. I'm new to this group and have a problem. My automatic goes into limp mode most of the time wen slowing down to 30 mph and mainly going down hill. ( it does it on flat road sometimes). I pull over and stop turn engine off and this seems to sort it out, also it will hesitate to change gear when going up hill and sometimes it sounds like a tank ( probably needs a blow out to clear DPF filter). Going down the duel carriageway it runs like a dream. it passed its mot in December and has had a new ECU recently. Any advice would be grateful. I'm a home care assistant and need my car working properly lol 😆 

7 hours ago, trisha73 said:

it passed its mot in December and has had a new ECU recently.

?? Which ECU?? There's loads

If it's PCM or TCM, ensure the replacement is running the correct level software

If you don't know when the battery was changed fit a fully charged new battery

When was the transmission oil and filter last changed?

@trisha73...don't be a OPW 😉

Hi. I had the same problem. Have you changed the pressure converter turbocharger? There are two of them. When I changed mine, the limp mode went away. Cost about  50£ each. 

14 hours ago, Shearers said:

@trisha73...don't be a OPW 😉

😤

10 hours ago, Roffe said:

 pressure converter turbocharger

Sorry, this is an unknown part name (that device may operate the turbo vane position?)  to me and whilst replacement may well have fixed your problem  it's a total guess for @trisha73's issue which I'm certain she'll come back to look at, or not (😉)

Much better to get some fault codes and a proper diagnosis. - your choice

That's a standard boost solenoid.  It can be used to control a wastegate or VNT vanes where vacuum operated.

19 hours ago, Shearers said:

don't be a OPW

Well it's Thursday afternoon. Things are not looking very hopeful 🤔