Look at the Short term fuel trim at

800 rpm …….(enter data)


3000 rpm held for 30 seconds ( enter data)

The turbo return line “gasket” will coat the entire back/ right side of the engine with oil and also look like a seam leak! If it really is a seam leak, there is a Austrian product called Kangaglue which might fix it

Sold here as JB Weld

P0573 tracks to ECM-9400, which is a brake pedal sensor signal too high reading, either intermittent or permanent.

I think this uses the same sensor, check the resistance per this chart

Ooof, that mid range STFT IS 27%, that’s a huge adjust. Something is leaking or fuel pressure is kaput, have you checked that?

If that is reproducibly rpm depenendent in the mid range, I would look at the intake manifold area for a leak. That’s induction dependent vs a leaky hose

volvolugnut wrote: ↑12 Oct 2021, 08:02

abscate wrote: ↑11 Oct 2021, 19:50 It’s Fortitude, except now it’s Greelitude…

It is hard to be clever, when you have it half wrong. Heavy sigh.
volvolugnut

You were more than half right! That’s 4x better than the six times I have installed my cams wrong over two days!

Charge air pipe? Yep that helped, thank you very much. Cataloged as "Upper Pipe" in volvo parts (8638967) as well. for reference: https://www.volvowholesaleparts.com/oem-parts/volvo-upper-pipe-8638967?c=bD0xJm49U2VhcmNoIFJlc3VsdHMmYT12b2x2byZvPXM2MCZ5PTIwMDUmdD10NSZlPTItNGwtbDUtZ2Fz There...

You’ve inspired by next TV show based on if you sell the car, paint the car, do performance upgrades , or just drive it yourself…


Flip, Dip, Chip, or Zip?

Thinking of you, hang in there p.

You can do the return line by just tapping in before the leak and routing up to the reservoir.

That fitting in the rack can be horrible to Release, it’s soft alloy and rounds off.

Avoid messing with it if at all possible

There are five bolted on plates on the exhaust side of the engine , right side of engine technically, that Allow access to the squirters, which I’ve never seen serviced.

I think this was posted as a mystery here before one of the guru Volvo Swamis posted the deep knowledge