Technical [Help] Fiat Stilo 1.6 16v

[drahzerinos]

Hi,
I bought a FIAT Stilo 1.6 16 V at a Stand 4 months ago and I still don't have the car.

What was done: The Stand ordered a 2-hand control unit (apparently the problem is not there, it always checks "ok" and the only light that comes on is the airbag)
-We changed the Sitio control unit (we put it next to the battery) The electrician who took care of it, said that on his part everything was done
The mechanic says:
-Changed the candles
-Changed any oxygen sensor

What happens :
- The rotations are not correct (especially after driving a few kilometers)
- The revs move so much that the car almost goes down (car stopped)
- Strong gasoline smell
- very high consumption
- When I go to change gears and put my foot on the clutch the revs go up a thousand revolutions (it literally feels like I'm pressing the accelerator instead of the clutch)

GIF of what happens:

What you see in the GIF is with the car completely stopped without touching anything.

The strangest thing about all of this is that out of nowhere the car is stable and consumption returns to normal with no gasoline smell at all.

Thank you in advance guys.
Diogo

 

[Ralf S.]

I would check the ECU error codes. You'll need an ECU code reader to plug in and access any stored errors. The error number(s) will give you an indication of what's causing the problem.

It sounds as though the throttle position sensor is playing up, or there is some problem with the Mass Airflow meter or even the lambda sensor.. but whatever it is, it will very likely have produced an error code and stored it in the ECU.


Ralf S.