Diesel flow regulator......

[fhmboy]

Hi all had codes read this morn, think they may not use planet as no P code recorded just, " intermittent fault, diesel fuel regulator signal coherence" any ideas as I'm posting on my phone do its not ideal for trawling the forums,

Backstory is misfire at 1300-1600 in 123 not so much in 456 but this is probably coz you don't tend to do such low revs in these gears. No other problems really other than quite low mpg 39-42 but my wife rarely does more than 15-20 miles a day round town I tend to do bigger miles at the weekend but nothing to write home about

Any ideas would be appreciated

Gaz

[jmkent]

39-42 mpg isn't far off.... presumably its a 2.0HDI? I get about the same myself in mine

[fhmboy]

Originally Posted by jmkent

39-42 mpg isn't far off.... presumably its a 2.0HDI? I get about the same myself in mine

yeah 2.0 hdi bit disappointed i used to get 50 ish avg out of my 1.9 meggie diesel

[battlestar]

well, keep in mind that 407 is quite a heavy car, almosr 300kg heavier than megane at around 1.600kg's

[jmkent]

Forget figures of 50mpg with the 2.0HDI 407.... they just aren't going to happen unless you only ever do motorway cruising

For average use, the best you'll get is low 40s

[407 mad]

mine was 44 max till I fitted cruise and stuck to the speed limit, got it up to 49.9 (once)