HDi Picasso down on power

[c.morewood]

I had a little problem with my Xantia being down on power.. suspected it might have been a malfunctioning tuning box or a small hole in the exhaust.
However I did an ECU reset over the weekend and she's back to what she used to be like an extra 10 or 20 bhp I'd guess.


Chris

[kitchD6C]

I've got a similar problem now, mine's fine at low revs. It's once you get past around 2k revs and ask a bit more of it that you come a cropper!

[Huskyxantia]

That's a good find Richard

I popped my Lexia on Rattiva today and witnessed an airflow of between 270 units* at idle and around 750-800 units at 3,000 rpm off-load.

I then did the same on Chris570's HDi and saw more like 600 units at idle and about 750-800 units at 3,000 rpm off-load.

So, a different reading between two cars at idle and I don't know which is absolutely correct. I was surprised to notice that Rattiva (on a W plate) and Chris's on a V plate have very different ECU software revisions despite being close in age and both being 110 HDIs. So much so that the Lexia display on mine looks totally different to Chris's...

* I cannot recall what the airflow units are now I will make more of a note when I next go Lexia'ing tomorrow...

Jim, was the maf fully at fault with yours ?
Mines losing the free running feeling,like your pulling something behind, brakes are fine ,engine runs perfect nice tick over starts ok too.