A work in progress.

[euromodder]

Originally Posted by Piwoslaw

I'm paying close attention, since this may effect my engine also, though without the FAP problems.

Looks like the culprit will be small tears in the intake ducting.

It could affect your engine, though PSA seem to use different routing and tubing for the intake.

[euromodder]

Having to keep Snert the S40 for a few more days, I'm doing some more experimenting with it.

The first tanks saw me driving the way I was hypermiling my own V50, just to see how they'd compare - ending with the technically identical S40 doing far better in the FE department, while driving better to boot.

Now I'm seeing how well the S40 does in normal driving, at normal speeds, and yes, even with normal tire pressure.
It still does far better than the V50 ever did.
Far better than the 0,01 Cd difference should allow for.
This is leading me to believe that my V50 has had issues since very early on in its life.

I've always found it astonishingly hard to reduce its fuel consumption, and found myself wondering how on Earth people on Spritmonitor got 52mpg or better.
But driving the S40 suddenly makes it seem simple.


@ 120 kph (74.5 mph)
S40 indicates 4 - 4.5 L/100 km (58.8 - 52.3 mpg) - it's rated for 4.2 (56 mpg)
V50 indicated 5.5 - 6 L/100km (42.8 - 39.2 mpg) - it's rated for 4.3 (54.7 mpg), that's what 0.01 Cd will cost @ speed.

[Piwoslaw]

That's a huge difference! More than each car should differ from any other. Pester the techs and get some answers! Ask if you can drive a V50 w/1.6D and see how that goes.

[euromodder]

Hägar's back !

First test at 120 and 100 kph seem to indicate he's now getting similar fuel economy as the S40 - if the on board computer is to be believed.
Without coasting, the indicated average is already down to 4.4 L/100km or 53.5 mpg.

This tank will likely be the tank from hell though.

[Piwoslaw]

Originally Posted by euromodder

This tank will likely be the tank from hell though.

Well then fill up now and get over with it

[nemo]

Originally Posted by euromodder

Hägar's back !

First test at 120 and 100 kph seem to indicate he's now getting similar fuel economy as the S40 - if the on board computer is to be believed.
Without coasting, the indicated average is already down to 4.4 L/100km or 53.5 mpg.

So spill the bean what did they do or say they did? Or did they just just slide s40 guts under your v50 skin to be done with you?

[euromodder]

Originally Posted by Piwoslaw

Well then fill up now and get over with it

There's some additive in the tank - forgot to ask what (for) - so I have to run the tank down, then only do a partial fill-up in order not to dilute what's left of the additive too much.

Then, they want it back for a few days to check it out again.

Originally Posted by nemo

So spill the bean what did the do or say the did?

Fresh oil and oil filter.
New air filter.
New air mass meter.
Fixed two leaks in the intake path, fore and aft of the turbo, by replacing the damaged air ducts.
Replaced the diesel particulate filter.

Replaced a few more hoses that had deteriorated beyond their age.
This could be the result of a leaking injector seal early in 2010, as the engine bay got very hot because of the blow-by.


It'll be interesting to see who'll be picking up what part of the bill
It took a while, but I must say they did go a long way to sort this.

Or did they just just slide s40 guts under your v50 skin to be done with you?

The guts should theoretically be the same.

[Piwoslaw]

Originally Posted by euromodder

Then, they want it back for a few days to check it out again.

Will you get Snert back again, or will you get to test drive yet another car?
[theatrical whisper]
Ask for a V50 1.6D!
[/theatrical whisper]

Originally Posted by euromodder

It'll be interesting to see who'll be picking up what part of the bill

The same question came up when I read that list. Good luck with negotiating with them!

BTW Did them explain exactly how each and/or all of those things on the list influenced the cause/symptoms? A pre-turbo leak shouldn't make too much of a difference, while post-turbo should lower boost pressure. I remember reading somewhere that one of the things PSA did in the new 1.6 e-HDi is to seal up the air doser (between turbo and intake manifold) to make it less leaky.

Originally Posted by euromodder

The guts should theoretically be the same.

You could say the same about humans, but I love my Wife more than anyone else

OK, here I am making smart comments, while you get a born-again car tune-up to go and leave my fuel consumption in the dust! Well, someone has to, since Arragonis is on vacation...

[Arragonis]

Hmm smart ass comments. I go all the way to Paris to follow up on an aero car and this is what I get

I'm glad Hagar seems to have his drinking and wind problem sorted, the next few tanks will be very interesting to watch. Is it me or is this list more or less someone deciding "sod-it, replace everything except the engine that is only attached with nuts and bolts, lets see if that sorts it" ?

Originally Posted by euromodder

Fresh oil and oil filter.
New air filter.
New air mass meter.
Fixed two leaks in the intake path, fore and aft of the turbo, by replacing the damaged air ducts.
Replaced the diesel particulate filter.
Replaced a few more hoses had deteriorated beyond their age.
This could be the result of a leaking injector seal early in 2010, as the engine bay got very hot because of the blow-by.

However major credit is due to the dealer for doing it and for you for sticking it out and making them do it. The "bill" will be interesting.

[euromodder]

Originally Posted by Arragonis

Is it me or is this list more or less someone deciding "sod-it, replace everything except the engine that is only attached with nuts and bolts, lets see if that sorts it" ?

They kept all the parts in a box and showed the damage on them.

In the case of the air flow meter, they showed the oily part.
Now there's a brilliant design !
It's one unit, a grid on either side so you can't get at the actual probe to clean it, and it sure looks like you can't remove the probe either.

Oil level was already up again, so changing it makes sense.
Swapping the oilfilter along is standard practice - less old oil remains in the system that way.

The DPF was replaced due to the number of cycles it had already done in its short 17.000km life, including one forced regeneration.

The "bill" will be interesting.

I haven't seen an invoice yet


The main dealership (it's a small chain) is to be commended for the effort they put in, but I'm left wondering about Volvo's parts quality and why none of this was spotted earlier on - the car's been in quite a few times.
Leaking air hoses are a known cause of trouble, so they should be checked even if there's no obvious damage.


Being abroad on vacation, Hägar has hardly racked up any miles lately.
I've emptied the tank with the additive, the partial fill-up has been done.
I expect to fill it up completely tonight or tomorrow at the latest, then it's back to hypermiling.


On the butt-dyno the engine seems to pull better .

Fuel efficiency has been tested at different steady speeds on CC and found to be more or less in the S40's ballpark - where it should be.
We'll see ...