Engine problem help required
New problem today. The car 147 JTD turissmo 54 plate went into limp mode and wouldn't rev over 1500rpm. Fortunately we have a 3 month warranty on the car and the garage has agreed to sort it out. However they are 20 miles away and have asked me to get it back to them. Car seems to have cleared itself but the computer dashboard display says engine control system failure on start up and then disappears but it still has engine management light on permanantly. The owners manual says it can be driven in this state and should not be driven if the engine management light starts flashing.
I had my friendly local garage look at it today before I take it back to garage where I bought it and they seem to think there is an issue with the map sensor and the throttle voltage wasn't changing up or down whilst they had it. The car was also chuckng out white smoke for a short period?
Anybody got any ideas what the problem is and has anybody had problems made worse by driving the car with engine management light on?
PS strange but just been out to check it and everythings seems ok?