Some fault codes

[Harvy]

Morning all,

I bought a vlinker from the link somewhere on this forum and downloaded forscan. Everything I own is apple so I had to go to my in-laws to use a windows laptop to plug it in! Anyway, I have quite a few codes showing most of which seem to be Egr related and tail light related.

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Is there a way, from looking at this screen, to tell what date the code first showed or how many times it has been thrown? More importantly, how do I clear them? I’d like to clear them and run the van to see if they reoccur. I have had a flat battery and I’ve seen that that can throw some phantom codes. Thanks,

[Airthies]

Go to the triangle section that says DTC it has an expanded list of codes and all details.

A play around hovering over each button will tell you what it is and there's loads of Utoob videos on Forscan

[Harvy]

Hi,

I’ve done some journeys in the van including using it to pull the caravan. It goes fairly well considering. On occasion I get a loss of power and sometimes changing up a gear will let me have power back. Other times if I hold it in gear and keep the throttle down eventually as I get somewhere near 2000 revs the turbo will appear to kick back in. So I plugged for scan back in this evening and reread the codes, this is what I found.

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So it looks like I need to order a new EGR.

Can a fault with the EGR cause the loss of power I was describing above?

[knobby1]

Hi,
So it looks like I need to order a new EGR.
Can a fault with the EGR cause the loss of power I was describing above?

Yes, if the EGR is open when it should be closed, the engine will suffer...they're a very common fail on Mk7 Transits, you can also get it mapped out so it never becomes an issue again.

Also check the turbo waste gate actuator linkage to see if it's free to move etc..they do lock up and/or snap the pivot links. There's no sensor on the turbo actuator so if it fails, you'll never know.

Lord Knobrot

[Harvy]

Thanks,

I think I’ll temporarily replace it with at £50 Amazon jobby, until I eventually send the Ecu to vantuner and then get it mapped out. I’ll see if I can see anything broken on the turbo too. It does has a whistle under acceleration. It’s a constant pitch, unchanging with the revs and seems more prominent when cold. The turbos appear to o lay be about £125 on eBay too! If it is broken it doesn’t seem to much to replace.

[knobby1]

Thanks,

I think I’ll temporarily replace it with at £50 Amazon jobby, until I eventually send the Ecu to vantuner and then get it mapped out. I’ll see if I can see anything broken on the turbo too. It does has a whistle under acceleration. It’s a constant pitch, unchanging with the revs and seems more prominent when cold. The turbos appear to o lay be about £125 on eBay too! If it is broken it doesn’t seem to much to replace.

If you have a whistle on acceleration...it might pay to check all the boost pipes/hoses and inlet manifold for splits. Is she also blowing a bit of black smoke under acceleration..??

Lord Knobrot

[Harvy]

Hi,
So it looks like I need to order a new EGR.
Can a fault with the EGR cause the loss of power I was describing above?

Yes, if the EGR is open when it should be closed, the engine will suffer...they're a very common fail on Mk7 Transits, you can also get it mapped out so it never becomes an issue again.

Also check the turbo waste gate actuator linkage to see if it's free to move etc..they do lock up and/or snap the pivot links. There's no sensor on the turbo actuator so if it fails, you'll never know.

Lord Knobrot

The waste gate actuator… is that the 15ish cm long rod that goes to a pivot joint? If so is this supposed to be movable by hand with the engine off? Mine doesn’t move at all. In neutral with my wife revving the engine to 3000rpm it doesn’t move either? Is there a fix for this or is it just a new turbo job?

[knobby1]

The waste gate actuator… is that the 15ish cm long rod that goes to a pivot joint? If so is this supposed to be movable by hand with the engine off? Mine doesn’t move at all. In neutral with my wife revving the engine to 3000rpm it doesn’t move either? Is there a fix for this or is it just a new turbo job?

Yes, that's the one...it can be tight as there is a diaphragm & a fairly strong spring inside the actuator....you'll not see much movement of the actuator just free revving the engine as the engine is not under load. If you're getting normal power out of the engine when driving, you can assume it works ok....if it wasn't working, you'd certainly know it.

Lord Knobrot

[Harvy]

The waste gate actuator… is that the 15ish cm long rod that goes to a pivot joint? If so is this supposed to be movable by hand with the engine off? Mine doesn’t move at all. In neutral with my wife revving the engine to 3000rpm it doesn’t move either? Is there a fix for this or is it just a new turbo job?

Yes, that's the one...it can be tight as there is a diaphragm & a fairly strong spring inside the actuator....you'll not see much movement of the actuator just free revving the engine as the engine is not under load. If you're getting normal power out of the engine when driving, you can assume it works ok....if it wasn't working, you'd certainly know it.

Lord Knobrot

I couldn’t move it using all my strength! I thought neutral revving would probably not build enough boost to move it. I have been having Major power loss issues that have been getting worse. I just haven’t started a thread about it yet. I’ve just changed the EGR as that is what my fault codes were for. (What a nightmare of a job that is!!) I finished that about 2 hours ago, I took the van for a quick run to check it works so I can take it on a proper run to work tomorrow and see if the power loss fault persists. I can clear the fault codes with forscan and test it yet as the charger for my in-laws laptop has disappeared! Tomorrow a new charged I bought should arrive and I can see if I have fixed my Egr issues which hopefully also fix my power loss issues. If not I shall look at the turbo. Fun times!

[Harvy]

I’ve just tried moving the wastegate actuator by hand and it moved fine now, I can feel the spring action. I drove the van to work and back today and I’ve still got the loss of power fault occasionally. Ive cleared the fault codes in the last few mins so I’m about to take it out for a drive and see if any other fault codes come up. Any tips on what PID’s to track on live data to try and find out the fault?

[Harvy]

I’ve taken the van for a drive and selected a load of PID’s to record on the live data. The van did the usual trick of loosing power and then it returning later. I managed to get my son to look at what elapsed time was when the fault occurred so I could check back when we got home. There was one perfect representation around 840 seconds into the run. Upon returning I had a look and I was in third gear no traffic in front and I was trying to build up speed for an upcoming hill. No power. Holding it in third gear with the pedal registering at 98% pressed down it took nearly 20 seconds before the power was suddenly back. During that time the most noticeable thing wrong in the data is the disparity between the desired fuel rail pressure and the actual fuel rail pressure. Desired being around 140,000 to 160,000 while the actual was 15,000 to 20,000kpa. I can tell when the power comes back in by the engine revs and the vehicle speed. When the power comes back in the actual fuel rail pressure jumps up to almost the same as the desired fuel pressure.

Do you think the fuel pressure is the problem, or a symptom of a different problem. I haven’t changed the fuel filter yet. I will, but I don’t think that will solve the problem due to the fact that the power suddenly comes back in. Is there anything else I can do to check the fuel pump is functioning properly. I’m very new to forscan so might not know something obvious. Is there an easy way to publish forscan data on here for you to see?

Thanks.

[knobby1]

I’ve taken the van for a drive and selected a load of PID’s to record on the live data. The van did the usual trick of loosing power and then it returning later. I managed to get my son to look at what elapsed time was when the fault occurred so I could check back when we got home. There was one perfect representation around 840 seconds into the run. Upon returning I had a look and I was in third gear no traffic in front and I was trying to build up speed for an upcoming hill. No power. Holding it in third gear with the pedal registering at 98% pressed down it took nearly 20 seconds before the power was suddenly back. During that time the most noticeable thing wrong in the data is the disparity between the desired fuel rail pressure and the actual fuel rail pressure. Desired being around 140,000 to 160,000 while the actual was 15,000 to 20,000kpa. I can tell when the power comes back in by the engine revs and the vehicle speed. When the power comes back in the actual fuel rail pressure jumps up to almost the same as the desired fuel pressure.

Do you think the fuel pressure is the problem, or a symptom of a different problem. I haven’t changed the fuel filter yet. I will, but I don’t think that will solve the problem due to the fact that the power suddenly comes back in. Is there anything else I can do to check the fuel pump is functioning properly. I’m very new to forscan so might not know something obvious. Is there an easy way to publish forscan data on here for you to see?

Thanks.

Have you replaced the SCV recently..?? Might be intermittently sticking..??

Lord Knobrot

[Harvy]

No I have not. Since my last post I was trying to look at what could be causing the discrepancy. I’ve seen the SCV mentioned a few times, it appears when it fails it causes the actual rail pressure to be far higher than the demanded. My issue is the other way round so sticking rather than failing sounds plausible. Is there a good guide on this forum showing how to change it? Will any brand do or is it a ford only part?

[Harvy]

Hi all,

I went out and bought a SCV from my local diesel specialists as they had it in stock and it’s a genuine denso part. £90 including VAT but I would like it to work and keep on working so better buy quality! I found a thread from 2013 on this forum that shows how to change it, very helpful. I got home this afternoon and with an hour of daylight left started the job.

Are these the right bolts holding on the fuel rail. Because I can’t get a torx but in the one on the left, the manifold is in the way!

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I managed to undo it using mole grips but it fouls on the manifold before it’s fully our of the head. With a little gentle persuasion I got it out without cracking the plastic manifold.

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This is the end of what I assume are 2 vacuume hoses that run over the top of the engine, it wasn’t attached to anything…. I think I have found where it goes. It looks like it should be attached to the back of something that has a pulley on the aux belt. Would this cause any problems being disconnected?

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After getting the manifold off I had a look inside and it is disgusting. I can’t believe how much crap is inside it. Its supposed to be the clean air intake! Bloody Egr!

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[Harvy]

On closer inspection of the manifold gaskets, one of them has split. I imagine this wouldn’t be helping engine performance!

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This, in turn, has been blowing the intake air (mixed with the filthy crappy Egr air) through the split and straight onto the top of the SCV and fuel pump!

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I cleaned a good amount of the gunk off so I could take the old SCV off.

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And refit the new one. Initially i fitted it upside down! I’m not sure if it would have any effect so I took it off and refitted it the correct way up.

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I have ordered some now manifold gaskets from Amazon because the will get delivered tomorrow! I can’t in all good conscious refit that heinous intake manifold in it current condition so I have made a petrol bath for it and have been using some rag and long nose pliers to clean the gunk out from inside it. The petrol is like black ink now! I’ve left it to soak through tea and the writing of this post, so it’s time now to go out and try and finish cleaning it as best as I can for tonight. Will it harm the plastic manifold being left in petrol over night?