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| T1G UP Member Since: 08 Dec 2009 Location: Bath Posts: 3101   
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well the EGR bypass program would of kept the EGR shut so not chuka chukas for you. This may well cause a gumming up once off the remap. Are they easy enough to remove or check visually?
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7th Sep 2012 8:24pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
I take it there is no MIL light illuminated? All the dtc's you have listed are common untested dtc's which appear all the time and will clear themselves after 40 ignition cycles unless they are relogged, again this is common. The only two odd ones are:
P068A - Engine Control Module/powertrain control module - power realy de-energised too early P0606 - Engine Control Module/powertrain control module processor These tend to appear after something has been plugged/unplugged from the OBDII socket. The only tool that I use which doesn't seem to log those DTC, is the legacy IDS system, which is a LR tool. The remap interfaces/scangauge/ultragauge/nanocom/msv2 all seem to log those dtc's after nearly every use. If the EGR was gummed up and taking longer to open and close the EMS would log a tested dtc and illuminate the MIL because it would be classed as an emissions fault. Also you would notice if the EGR was not working as it should by the engine sound/power and emissions. There are different classes of DTC as well, tested being the fault has been tested 3 times and it has failed all the tests which usually means there is a problem needing rectified. Untested dtc's come and go all the time and if an untested dtc continually fails the self test it then becomes a tested dtc. Remember as well that only emissions sided dtc's tend to illuminate the MIL. What you have to take into consideration with untested dtc's is that if say the EGR valve takes a millisecond longer to move than instructed to do so by the EMS, then the EMS will log an untested dtc because the actual readings don't match up to the stored readings stored within the EMS. Also any live data tool plugged into the system will average out the data values shown, because the actual true values received by the EMS would fluctuate wildly and not give a steady readable value for the user to understand. Below are some old EMS dtc readings taken from my Puma with a nanocom which doesn't differentiate between tested and untested dtc's. All of the below are untested dtc's, I unplugged the nanocom and used the MSV to classify the DTC's. .NANOCOM - PUMAENG.APP - PUMA ENGINE fault file 0606 - 49 Engine control module (ECM) processor internal electronic failure --- 0100 - 29 Mass or volume air flow A circuit signal invalid --- 1103 - 00 Mass air flow (MAF) sensor in range but higher than expected --- 0299 - 00 Turbocharger A under boost condition --- 068A - 00 Engine control module (ECM) power relay deenergized - too early --- NANOCOM - PUMAENG.APP - PUMA ENGINE fault file 0404 - 72 Exhaust gas recirculation (EGR) control circuit range/performance actuator stuck open --- 0606 - 49 Engine control module (ECM) processor internal electronic failure --- 0299 - 00 Turbocharger A under boost condition --- 0100 - 29 Mass or volume air flow A circuit signal invalid --- 1103 - 00 Mass air flow (MAF) sensor in range but higher than expected --- 0234 - 00 Turbocharger A over boost condition --- 1402 - 17 Exhaust gas recirculation (EGR) control valve metering orifice restricted circuit voltage above threshold --- Brian. |
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8th Sep 2012 9:20am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8171  
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Hi Brian,
thank you for the detailed response. good to learn more. so in essence dont worry. you are correct - no MiL light. i was just wondering what the screeching noise could be attributed to and the lack of economy compared to previous. Cheers James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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8th Sep 2012 6:27pm |
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| rossy Member Since: 29 Nov 2010 Location: Co. Roscommon Posts: 1296  
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Oh thats interesting, jst because I get that same noise when under load.
Just to clarify - if I am towing the caravan and come to a roundabout, letting go of the acellerator pedal, I then get this loud induction roar (whilst in 2nd gear). Its not an unpleasant sound - as if the engine has been replaced with a V8 monster - and to get rid of it I have to take my foot off the gas pedal again or blip the throttle. MPG and performance seem to be improving as the miles rack up (I'm only on 12k still and have done 2 oil changes so maybe its taking longer to bed in). Lorryman100, if you're about, is this normal or indicative of something amiss? I must admit diagnostics is like astrophysics to me. On a recent service the dealer plugged her in and said there were no fault codes so, in my innocence I assume everything's OK. My Puma is a rattly one and I have heard that incorrect hex codes or slightly out injector timing could be the culprit but as it runs well I'm not bothered as long as there's no harm done. Last edited by rossy on 8th Sep 2012 6:44pm. Edited 1 time in total |
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8th Sep 2012 6:36pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
When you say screeching? Does it sound like a mildly slipping fan belt? Or is it more an induction whoosh sort of sound?
Brian. |
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8th Sep 2012 6:38pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
When the dealers check for fault codes they are looking for tested faults only, which they then act on ref warranty repairs as they need the dtc's to appear on the session files. Could the noise you are hearing be the viscous fan running?
Brian. |
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8th Sep 2012 6:53pm |
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| rossy Member Since: 29 Nov 2010 Location: Co. Roscommon Posts: 1296
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I don't know. It seems a lot louder and deeper than that. I never thought much of it until jst mentioned it.
As I said I'd be quite happy if it made that noise all the time as its quite a powerful sounding roar ! 
But if there's nothing wrong then so what, I suppose. Thanks Lorryman |
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8th Sep 2012 8:34pm |
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| T1G UP Member Since: 08 Dec 2009 Location: Bath Posts: 3101
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I took the MAP off mine yesterday as it'll need a service soon and it'll need about 40 ignition cycles to clear the codes.
So mine had a EGR shut map aswell as a tune. They do seem to make more noise with the standard EGR operation. Almost as its bleeding air back and creating more turbulance in the air supply pipework. And i now get the Chuka chukas. But boy isn't it slow! 3rd gear alot more and no ooomph to speak of. I had the usual codes up, they cleared and i'll check it later today to see it i still have any. I have noticed the viscous fan on a few times lately. Screeching can only be a belt, a bearing running dry or the fan, although theres not much in the viscous unit to screech? Have you tried running with out the fan? |
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9th Sep 2012 7:52am |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
You can also add a blown exhaust manifold gasket, warped turbo/exhaust flange and Turbo failure to that list Tig.
Mine turned out to be coming from the Turbo itself which then got replaced under warranty. Symptoms where a high pitched squeal like a mild slipping fan belt. Sounded the same as when an exhaust manifold stud had snapped on a 200TDI. The noise only appeared once the engine was warm and the squealing coincided with boost demand. Put the Puma into the dealers twice with the normal no fault found answer from them. As it is a pain to keep dropping the Puma into the dealers I did a few tests including the fast idle test on IDS with no sensor readings out of the norm. Also performed a smoke test on the inlet and exhaust systems with no leaks found. Also used a boroscope and ran it around the exhaust manifold and turbo manifold incase the leak appeared when very hot, no soot marks, both still have that nice shade of rust. Next was the Accessory Drive Belt, as it sounded like a slipping belt, some of the paint was missing off the deflection pulley directly under the AC compressor but there was no damage to the drive belt to show slipping, no flattening of the belt grooves etc. Started the engine and had a listen as it was still hot, could hear a slight whistling from the area of the AC compressor, deflection pulley. Removed the cooling fan and accessory belt and started the engine (max of 3 mins as the coolant pump runs off the accessory belt), could still hear the whistle but it was coming from the turbo. Refitted the pulley belt and fan and then removed the turbo heat shield. Restarted the engine and using a stethoscope listened to the turbo and found it was to blame. Went back to the dealers and let them listen, result was a new turbo and no more whistle. I'm hoping that it was a manufacturing defect on the turbo and not an oil feed problem with the duratorq. Brian. |
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9th Sep 2012 9:23am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8171
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Hi Brian sounds exactly like that ^^^^^ and only when under boost. BUT its only come about since removing the egr blank software. i guess that would explain P0299, P0100??? Cheers James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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9th Sep 2012 10:00am |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
James, could you put the remap back on with the EGR closed software, to see if the noise is still present under boost?
I never got a chance to really examine the turbo other than a quick look inside with a boroscope. There was no obvious signs of failure present and I have put the failure down to faulty production. If the sound is still present with the egr closed then have a closer look at the turbo itself. 
Brian. EDIT P0100 deals with the airflow over the MAF sensor in the airbox. And P0299 is a very common untested dtc. |
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9th Sep 2012 10:47am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8171
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will have a look see over the course of this week. thank you Cheers
James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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9th Sep 2012 3:06pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8171
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been doing a bit more reading up on this.
its still running original tune, it didnt do the 'screeching' noise this morning so i am waiting until i get it regularly again in std tune will then go back to non egr map and see if its still there. thinking vane actuator, if the vehicle isin't pushed hard often - probably only when towing, can this actuator seize up? ( its more pronounced now as its being pushed more in std tune than it would of been when remapped.??) i have movement in mine at both ends but didnt want to force it through a vertical stroke for fear of damaging it or the motor drive in the control 'bit' MAP was a little gummed up so have cleaned that too. MAF as clean. cant see any evidence of air from gaskets Cheers James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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10th Sep 2012 11:07am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8171
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http://www.defender2.net/forum/topic9410.html
here is the previous thread on the issue. Cheers James 110 2010 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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10th Sep 2012 11:10am |
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