JTDm - Faulty Injector?
I've had my '07 GT JTDm for a few years, but it seems to run quite rough some times - especially at idle.
With the aim of doing some DIY investigation, I got myself a wifi OBD dongle and a copy of Fiat ECU Scan / Multiecuscan. Having connected it all up, I found that there were no ECU error codes listed, but that the injectors seemed weird in 2 ways:
1. As per the attached graph, Cylinder 2 seems to have a much bigger correction value than the others. Plus this moves in the opposite direction to the others when revved to 1830 and then 2000 rpm.
2. The 9-digit injector codes recorded in the ECU are totally different from the codes on the actual injectors. None of them match at all!
Now I'm new to modern diesel engine technology (and engine diagnostics in general!), so I can't work out whether I have:
1. Two issues
2. Or just one
3. Or whether they might be related?
Can anyone help please?