S80: Engine Problems won't go away. What else could there be?

[Black dog]

Right I've seen this thread pop up a few times but I decided to hold back due to the amount of bol locks talked about could be this, might be that, specialist this, and useless dealer service!
I'm gonna spell this out once and its gonna sound rude.
But as you stuck with the car so long clearly you are no quitter and as you decided you may tackle it yourself you now have my input.
Firstly on the bottom of page 3 you said it smokes and is off cylinder 4, it stops smoking when injector unplugged.
Your wiring is fine. It's a bad injector or compression issue. Whoever said they can test them injectors without removing is talking bol locks!
2nd you snapped a timing belt on this before the problems, read page 6 post from grahambrown1 because he is on the nose with the cause.
Once you've done this post back if your still up for investigation and il assist.

[Kev0607]

Originally Posted by Laird Scooby

I daresay there's a lot of carbon in it as well - fairly sure brushless motors are a relatively recent thing and therefore i would expect most of the electric motors powering the underground trains to be brushed - carbon is the common material for them.

Must admit though, i've never looked into the motors for electric/underground trains - they may be brushless these days but i daresay historicallly the had brushes.

I also watched a video on YouTube where a chap in America who owns a big warehouse was using a big space heater (600,000 BTU output) on kerosine, but closer to 750,000 BTU's running on diesel to keep warm inside (he used diesel though, not kerosine). Most days, it was 2 degrees above freezing inside & he had to put additive in the agricultural diesel he was using to stop the fuel from gelling up inside the tank.

The floor across the whole workshop, which was a massive area was turning black with the soot off the space heater. He was using up to 10 gallons of fuel a day just to keep the heater running, but then decided that he would get natural gas to heat the shop instead with blowers pumping out heat via ventilation fans around the area.

So yeah, diesel isn't very clean!

[venomtail]

Is measuring the ohms resistance on my injectors a valid way to see if any of them are faulty? Took out the suspect injector and measured it's readings on my multimeter and it read 0.3.

Would anyone know what the figure should be on the multimeter? From looking at my VIDA it's saying part number for my injector is 8603595.

[Laird Scooby]

Originally Posted by venomtail

Is measuring the ohms resistance on my injectors a valid way to see if any of them are faulty? Took out the suspect injector and measured it's readings on my multimeter and it read 0.3.

Would anyone know what the figure should be on the multimeter? From looking at my VIDA it's saying part number for my injector is 8603595.

What about the other injectors, what do they measure?

[Kev0607]

Originally Posted by venomtail

Is measuring the ohms resistance on my injectors a valid way to see if any of them are faulty? Took out the suspect injector and measured it's readings on my multimeter and it read 0.3.

Would anyone know what the figure should be on the multimeter? From looking at my VIDA it's saying part number for my injector is 8603595.

You'd need to tell us the full engine code. Have a look on VIDA.

It should be something like D5244T4 for example.

You need to test the other injectors too whilst you're at it, not just one.

**Although, I've come across something in a recent post of yours (see bold font).

Originally Posted by venomtail

Had my mechanic go over the car again to see if something comes up. Nothing did and he said it seems like the last issue is software related since everything else checks out and only the dealership is able to do that.

Went to the dealership and agreed that they will do a full on "investigation" part by part, step by step. Gave them a list of everything that's been done to the car, like in this thread and they began work.

3h of work later, I get told that they have no results after trying various things and want some 3 more hours, yet they ask £130 for an hours work. I'm already at £390 and they want another £390 with the possibility and no guarantees of finding the issue with.

In the 3 hours, they removed my exhaust, checked EGR, checked timings and replaced the tensioner as well are reprogrammed the injectors just in case electronically there's something wrong. No change.

Next they want to check every single injectors (even when all but 1 of them work just fine) and want to check the swirl valves. I would likely go ahead with this except for the £130 an hour asking price. I'm looking at another £600 with no guarantee for a fix, so I guess it's time to save up again. A Scania dealership asks only £70 an hour. Don't understand where this £130 comes from.

In the meantime, I've taken the car home and maybe I'll takle this myself while saving up. I guess it's time for me to become an expert on D5 engines

Glad to know at least that the EGR valves, DPF filter, its sensors and timing are not to blame as they're working fine. Not everything's a waste.

Really excited forwards to what will happen in the next few months.

So they've reprogrammed the injectors. Didn't they test them before reprogramming?

You also mentioned that the car stops smoking when you unplug the wiring to cylinder 4 (on page 3 of this thread). Why haven't you replaced this injector before now, told the garage to do it, or at least made them aware?

[venomtail]

Originally Posted by Laird Scooby

What about the other injectors, what do they measure?

I've only managed to take a look at one today, will hopefully have a look at the rest of them this week to see how they compare.

Originally Posted by Kev0607

You'd need to tell us the full engine code. Have a look on VIDA.

It should be something like D5244T4 for example.

You need to test the other injectors too whilst you're at it, not just one.

I'll test other injectors, only got around to doing one today. I don't know VIDA that well but the error I'm thrown out is ECM-P030400. Don't know what more codes I need to look for. And yes, I think the engine is the D5244T4 variant.

[Kev0607]

Originally Posted by venomtail

I've only managed to take a look at one today, will hopefully have a look at the rest of them this week to see how they compare.



I'll test other injectors, only got around to doing one today. I don't know VIDA that well but the error I'm thrown out is ECM-P030400. Don't know what more codes I need to look for. And yes, I think the engine is the D5244T4 variant.

If you have the D5244T4 engine, the injectors should read 0.22 ohms at 20°C.

***This is based on a V70 with a D5244T4 engine*** Double check your engine code to be certain that you have the same engine.

You did mention that the car stops smoking when you unplug the wiring to cylinder 4 (on page 3 of this thread). Why haven't you replaced this injector before now, told the garage to do it, or at least made them aware when the car went in for its most recent trip to the dealership?

You are aware that if you put a new injector in, it needs to be coded. You won't be able to do that yourself.

ECM-P030400 - That's a cylinder 4 misfire code.

For example;

ECM-P030100 - That would indicate a cylinder one misfire.

ECM-P030200 - Cylinder two misfire.

ECM-P030300 - Cylinder three misfire.

[venomtail]

Originally Posted by Kev0607

You'd need to tell us the full engine code. Have a look on VIDA.

It should be something like D5244T4 for example.

You need to test the other injectors too whilst you're at it, not just one.

Here's is a picture of the VIDA error code window. Did the last diagnostics two months ago but pretty much nothing's change. Will do another one. Are you able to see something I'm missing?

Originally Posted by Kev0607

**Although, I've come across something in a recent post of yours (see bold font).

So they've reprogrammed the injectors. Didn't they test them before reprogramming?

You also mentioned that the car stops smoking when you unplug the wiring to cylinder 4 (on page 3 of this thread). Why haven't you replaced this injector before now, told the garage to do it, or at least made them aware?

What they told me is they thought maybe the testing of compressions and injectors might had messed something up, so they wanted to reprogram them just in case. And no, they didn't test them.

As of saying smoking stopped once the injector connector was unplugged, I can't fully remember actually. To my knowledge we were thinking it might had been more of a symptom of something rather than a cause, because one garage had tested them and said each injector was working fine but that garage messed up on so many other parts I have doubts on everything they did, even the injector testing. That's why I want to do everything they did again.

[Kev0607]

ECM-P030400

That indicates a problem with cylinder four.

Do another diagnostics check with VIDA & post a list of all the fault codes that come up.

You could have more since it was last done two months ago. You might not, but its worth checking.

You do really need to nip this one in the bud though. Make your decision... you're either fixing the car, or count your losses and move on. To be honest, I'd be inclined to go with the latter.

You've spent a fortune & are no further along. I don't mean that in a negative way, but it sounds to me like every person under the sun has worked on this car & it doesn't sound like they really knew what they were doing. That has cost you a lot of money, time, inconvenience... its time to make your mind up.

So, ask yourself these questions... Are you going to commit more time/money trying to fix this car, in addition to what you've already spent? Or have you reached the point where enough is enough, so its time to call it quits?

[venomtail]

Looking online my engine parameters match the D5244T4 engine variant and I only seen one place on VIDA that says my engine and it's along with the model and year. Safe to assume I have the D5244T4 model?