I have been absent for many months, but now I've reached a point where I could do with second opinions from the members of the forum, let me explain...
7 months ago, I did a job on a fiat ducato van 2007 model fiat ducato maxi X250, 120hp multijet engine, 2.3JTD. Engine code F1AE0481D
Van came in with EML on, recently purchased by customer. Plugged in texa navigator and got; P0638 - Throttle solenoid valve control - Short to ground
Carried out a physical inspection of the TB and found the electric actuator completely seized due to water ingress, and one of the drive pawls onto the butterfly shaft broken off - strong case for a replacement part.
Obtained from fiat a re-furbished part (the only option they could offer at the time - an old casting with new moving parts and electical actuator), fitted the part, cleared the code and sent the man on his way. Within a month he had driven the van to corfu, and was later to report that soon after arriving in Greek territory the EML was coming back on intermitently with some hesitance when EML was on. A Greek garage deemed it to be down to 'sub-standard' Greek fuel, and suggested some addative or other. Long story short the van was used very little once actually on Corfu "perhaps four or five times" - quote unquote.
About 1 month ago the guy is back in the UK and fills up in Dover, the van drives all the way back here to the North West with no issue - which tends to back up the poor fuel angle. For a further week its all good, then the EML is back, and the guy brings it into me.
Well imagine my suprise when I plug in to find P0638 - Short circuit to ground, the exact same fault - only this time its not a current fault, only held in the memory.
My texa is capable of commanding the TB for a function check, which I carried out, and couldn't fault and have got the trace below:
Last edited by Avdr
on Thu Jun 13, 2013 10:29 am, edited 1 time in total.