FIXED! Fiesta gasoline 2009 engine stop when slowing down

[CQFB]

Hi
My car Ford FIESTA Duratec 1.25 82ch SNJA engine : 80000km This car is my son's
The issue happened suddenly on motorway : lacked of power at low RPM < 1500 tr/mn

After several interventions (coils, fuel pump, plugs, injectors, computer) the behavior is still not fine because of little noisy in exhaust when accelerating and engine cut off when décelerating (leaving my left foot from the pedal)
Starting after that is not a problèm

I m looking for same experience in such problem ... with good resolution ...



I'd like to add files (fsl format or png) but I've an issue when I tried

I hoppe i've been clear. Ask me if you want. You re welcome
Cordialement (in french)
BFCQ

It was a timing belt offset

[f-wolf]

https://www.google.com/search?q=french ... wiz-serp

[CQFB]

Hello

I've monitored the behavior of my engine in a parking mode. No movement, no accélération. As I hear its noise I know it's not correct and the idling is suspect. The DRPM is 750tr/mn but RPM fluctuate between 750 an more than 800. And for few seconds it's perfect ...

Using Forscan in monitoring mode I see a correspondance with SPARKADV wich is not controled and other moments where it is very stable.

I 've made three fsl files (240 seconds each) with specials conditions showing a better comportement of the idling but I not able to understand what is wrong. The température of cooling is sometimes 105°C and don't seems good

I ve transcript data of each fsl/csv in excel curves to try to have a better look ...?

If somebody feels strong enough in Forscan PCM analyse / fsl files kept in a fiesta 2009 I would be very pleased. Even exchanging in Private Message for more reactivity. (fsl file are too large for attachment)

Best regards
CQFB