I've read lots of similar threads, but still I'm not sure whats wrong and what to do.
I bought a Stilo 1.6 gasoline, 03 model and after a couple of weeks it started to act funny and stupid.
It cuts off at random times, both up- and down hill, and both hot and cold. It almost always starts again immediately, always within 5 min. It also stalls at idle (rpm about 700) most often when its cold. The warning "stop, engine" is always on. Some times when it cuts off, loads more errors pops up, "loose connection", "ASR failure" ect - they disappear when I start the car again. Also if I press the throttle a little at low speed and and let it up again, the car kinda jumps.
I've checked the connections to the ECU, they are fine. I've done a "semi" ecuscan with a cheap scanner, got p1687 and p0520.
I'm planning to clean the throttle body and do the throttle relearn procedure, might this help?

Also, is the engine cover necessary? I removed it to check the ecu, and one of my dogs sat on it and it broke in half....:bang:

I'm totally noob at Fiat, so all thoughts and ideas is very much appreciated!

probably a faulty ECU, notorious problem with the 1.6 - get the ECU tested.

Hello. I recently had this problem and I have changed the ECU, but even after that I still had problems.
The next thing I did was to disassemble the fuse box near the battery, clean it and also clean the pins from the fuses and relays. I observed that if I played a little with the T9 relay by pulling it out and putting it again (which from what I read is the one through which these connections pass) the error dissapear and I can start the car again.

Someone posted a video a few weeks ago about the cause of the ECU failure, is your ECU mounted on the actual engine?

I'll try find the post but if I remember correctly the issue was pins within the ECU dissconecting from the board as the solder melted from the heat of the engine, was an easy fix with 10 minutes and a soldering iron. Could be your problem?

https://www.fiatforum.com/stilo/342336-computer-easy-fix.html

Have a look at the video a few posts down in that thread, might be the issue?

Thanks, thats what I think is the problem, hos do I get the ecu tested?

ale199020 said:

Someone posted a video a few weeks ago about the cause of the ECU failure, is your ECU mounted on the actual engine?

I'll try find the post but if I remember correctly the issue was pins within the ECU dissconecting from the board as the solder melted from the heat of the engine, was an easy fix with 10 minutes and a soldering iron. Could be your problem?

Click to expand...

Thanks for the tip, but I've already checked this, and they are all fine

mitudor said:

Hello. I recently had this problem and I have changed the ECU, but even after that I still had problems.
The next thing I did was to disassemble the fuse box near the battery, clean it and also clean the pins from the fuses and relays. I observed that if I played a little with the T9 relay by pulling it out and putting it again (which from what I read is the one through which these connections pass) the error dissapear and I can start the car again.

Click to expand...

OK, thanks Gonna try that