- Jun 24, 2024
- 8
- 20
- Funster No
- 104,097
- MH
- Adria Sonic Supreme
Not sure if anyone can help, or if you’ve suffered the same problem. I have a 2021 Adria Sonic Supreme 810 on a Fiat Ducato 180hp with 9 sp auto gearbox bought from new. It is one of the last of the series 7 Ducatos. As a 5 tonne van I have always felt that 180hp is not quite enough in difficult circumstance e.g. roads with hills, as it is always sluggish to change down and will let the speed bleed off very quickly first. Taking control, either by shifting to manual, or kicking down works for a while but then a red engine or gearbox temperature light comes on along with an alternating amber check engine message and an amber ‘auto stop/start inoperative’ icon. Shutting down resets the red warning but not the amber messages. In the first year, the van was with a Fiat Professional dealer for close to 4 months until finally FIAT agreed to replace the transmission control unit (TCU). The saved error codes indicated too much use of both brake and accelerator – at the same time, something I suspect is a generic code for something else as I drive with one foot. No problem for two years until last week when in Sweden, and it happened again. We found a Fiat Professional dealer (with an English technician) who read and cleared the fault codes. They were the same as I recall from 2 years ago. He assured us it was not mechanical and it was safe to continue our travels. Since then, it has happened three more times and within 36 hours the ‘electronics’ have reset themselves and extinguished all the warnings. However, something is clearly not right both in that the engine struggles to keep speed on even a moderate incline, and after the fault because the engine revs are very high, 2,500rpm at 60mph in 8th gear. More normally at that speed and in that gear the revs are a tad over 1,500. I will also post on the Ducato forums but any information or guidance would be very much appreciated.