"Is your engine temp gauge staying steady at N? Sometimes a stuck open engine thermostat will result in engine overcooling after a fast run which take sit out of closed loop feedback and a loss of tickover results"
Really can't say... Engine temperature was never a thing to watch during Examiner hook-ups, not that I recall. Maybe, I will give it a try during next few days...
Could be if the algorithm for ECU is that in case of a fast drop down of temperature a slow jump it does something extra. Driving on LPG makes the temperatures higher...
The gauge on the board is like glued to the middle of teh scale when the engine warms up.
"Are you able to read your lambda sensor voltage outputs on the move as running data? If the sensor overcools then it no longer outputs a signal
"
I Yes I am, I have LPG Kit diagnostic and along with oter stuff lambda sensor voltage - it cuts up and down just nice. When the foot is on clutch, during cut-offs it is zero, but when driving, it is nice.
The whole car is acting great except for that snall detail...
"Does it only happen when running on LPG?"
No it doesn't, only it's a bit more obvious on LPG. To make it just as obvious on gasoline, I turn on more electrical consumers.
...
An interesting thing is that a whole car is a bit shakey in beetwen 750-1000 rpm, just before idleing (both on gasoline and LPG - no difference; it was so even before adding LPG kit...). The revs don't go up and down, it just shakes a bit (like it is scared to start idleing...).
Below 750, at around 720 which a standard (for mine) rpm when idleing, one can hardly feel it, but it is noticable (have changed both plugs and coils - all of them - no effect on the shaking thing). Above 1000 revs, well it is hard to notice because the sounds are different, everything is different, but the shaking is the same and maybe even less than at 720 rpm.
I thought that maybe some air is getting inside after the throttle body valve, but simply couldn't find where. Maybe you could point me where specailly to look. Since his shakig thing was something I recall even before installing the LPG kit, it (propably) couldn't be the place where LPG injectors are introduced into the motor.
What I also wanted to check was te earthing of the schirm on senors K43 i K47. From my experience, bad schirming can explaine a lot of "unexplained" things. For that, I have to find C40B earth which is nowhere!!!!! I tried to find it this afternoon but it was nowhere... Maybe Mr. Giovanni decided to put in somwhere where one has to dismantle half of the stuff to gain access to it...
Or it was just blind me...
What I found was only one earth on the engine, just underneath the ECU and one the ECU.
I read lot of post describing my biggest problem, but no actual solvings (except from the ECU change...):
https://www.fiatforum.com/stilo/132207-engine-shuts-down-when-foot-clutch.html
https://www.fiatforum.com/stilo/197708-stilo-cutting-out-when-pressing-clutch.html
https://www.fiatforum.com/punto/98731-punto-keeps-cutting-out-when-clutch-pushed.html
... Have checked that I30 and I31 - The Brakes and Clutch pedal sensors... They look OK. One thing that worries me is that two types of I31 have changed after mine STILO was made in XII/2001, one type in II/2002 and other in V/2002.
