Coolant temp 3400c. Engine revs 3900rpm. Fuel temp 6000c. MAF intake 1700c. Battery voltage 12.7v (thank you).
Been a bucket of trouble this car, had this, that, tother, all basically regarding rough running but smoke is less.
Any ideas. Need to check earth leads.
2011 multijet.

With readings as wacky as these, I'm surprised the engine management computer will let it run at all.

What are you using to monitor it?

No chance it's just a badly seated ECU plug?
Or possibly the little earth wire from ECU has failed. That's what I had last time I saw readings like that.

Hi again. Good answers from Irc there, was going to check plug on ECU tomorrow if dry. Fit another earth between engine and battery. Need to check for this wire, like Irc says, wire to ECU.
Yes jrkitching what makes these crazy voltages but it runs. In normality with low crap batteries, the gauges can swing.

goggs said:

what makes these crazy voltages but it runs.

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With the readings from the sensors this far out, it's likely to be running in some sort of limp mode using a default set of parameters; hence the rough running.

I'd agree this is leaning toward a bad ECU connection or a failing ECU. With this many readings out, it's unlikely to be a sensor.

where are you reading the fuel temperature from ?

Reading from ECU via VAGKKL + Fiatecuscan tool. Think it's just same one as you guys are using but can't remember the name. 4 selection switch on plug for ABS, Airbag, KKL/engine, ?.
Used car today as needed too.

goggs said:

Reading from ECU via VAGKKL + Fiatecuscan tool. Think it's just same one as you guys are using but can't remember the name. 4 selection switch on plug for ABS, Airbag, KKL/engine, ?.
Used car today as needed too.

Click to expand...

probably a miss match with the software version

fiatecuscan is quite old version and the ECU are constantly being updated

try the free version of multiecuscan

Kaolar. It came with a disc but never used. Offloaded from internet and paid about £45. Used it to put in new injector data, reset fault codes etc. Got info off here at the time, about 2 years ago. Nice bit kit with pictures on Laptop..