hi all me again. doblo 1.9 multijet 56 plate an update no eml are on.
starts up fine and after about 2 minutes it starts to hunt .
went the temperture gauge starts to come off of cold the hunting stops but there is also a diesel knock not on tick over but from about 2000rpm
work done so far is
new egr vaule
filters fuel and air
injectors tested and two of them was reconditioned
map sensor and a air cross over sensor??
today i done about a 10 mile journey stoped and got talking to a work mate and left it running for a good 30 mins and when i drive away the knock was a lot quieter then after about 1 mile got on the motorway 70 ish maybe 80 and then the knock came back . when driving around town it knocks and when i take my foot off the gas it knocks for a second or 2 and then stops knocking:bang::bang: can anyone help as this is doing my head in

could it be craksensor have seen these on here before