ColinR Posted March 17, 2009 Share Posted March 17, 2009 I recently got a 52 Discovery, shortly after getting it I had noticed a leak from the fuel pressure regulator, organised for it to be fixed under the warranty. This took a few days to get into the garage to get done so carried on using it as the leak wasn't to bad. Anyway was out in the vehicle and had lifted of the accelerator as was coming to a junction and as i approached the junction the vehicle started to die and then cut out. I had a look to see if the leak was worse and it was just the same, after a couple of minutes it restarted ok and drove fine. Cut out again on the way to get FPR changed this time there was a load of black smoke. switched off and checked with my nanacom to see what was showing and this was showing an intermittent short circuit on one of the injectors. I cleared the fault restarted and all okay. Got the FPR Changed and returned home ok (40 mile drive) Next day drove it about 2miles and again as I lifted off the vehicle lost all power and cut out, lots of black smoke. It wouldn't restart this time. Had a look on nancom and it showed an intermittent short on the turbo waste gate valve, cleared the fault and it started up okay, drove home. Having had two different faults on the Nanocom thought i would check the plugs on the ecu(despite the garage having had a new injector wiring loom fitted) sure enough there was oil on the red plug. Cleaned this out and then checked ecu this was okay. Went for a test drive and within a mile it lost all power and cut out lots of black smoke. Switched of, restarted after a few minutes went a hundred yards and it cut out again, more black smoke. Only common factor I can see is that it cuts out when I lift off the accelerator, Anyone shed any light on what could be wrong, been suggested its the fuel pump others say it could be the injector seals? Quote Link to comment Share on other sites More sharing options...
BogMonster Posted March 17, 2009 Share Posted March 17, 2009 It would be worth checking the EGR system as that tends to open the valve when you lift off the accelerator so if it is sticking then it might cause lots of black smoke but I've never seen an engine actually stop because of it. Fuel pressure can be checked by plumbing in a pressure gauge where the fuel temp sender goes in, the pressure should be 4 bar/58psi. Another thing I wonder is whether a dud crankshaft sensor could cause the problem as if the engine loses the crank signal it can't figure out when to inject the fuel which could cause a cut out but not really seen that happen. The only other thing I can think of that I have seen cause total cutout is the ECU. Probably not much help but let us know if you find the problem for future reference! Quote Link to comment Share on other sites More sharing options...
ColinR Posted March 25, 2009 Author Share Posted March 25, 2009 Cheers Bogmonster for the reply. ****Update: Now changed both the fuel pump and the turbo wastegate modulator. Took it for a test drive and the problem still occurs, checked on the nanacom and it showed 01-05 turbocharger wastegate short circuit CURRENT. I have checked the wiring for damge and not seen anything that would relate to this. No warning lights come up on the dash and the above is the only fault that shows on the nanocom. Anyone had a simliar problem or suggestions as to cause? Quote Link to comment Share on other sites More sharing options...
ColinR Posted April 1, 2009 Author Share Posted April 1, 2009 Now fixed, it turned out to be the hose between the inter cooler and the turbo had collapsed internally. Quote Link to comment Share on other sites More sharing options...
therealboss Posted July 2, 2009 Share Posted July 2, 2009 Now fixed, it turned out to be the hose between the inter cooler and the turbo had collapsed internally. I have the very same problem, took off the pipe from the intercooler and its soft, so will fit a new one tomorrow and let you know how I get on. Quote Link to comment Share on other sites More sharing options...
d1scv Posted July 3, 2009 Share Posted July 3, 2009 Just trying to pick the bones of this one-for future reference. It would seem that oil on the red plug has indicated a circuit fault in the injector area. The delaminated hose has indicated a circuit fault in the waste gate area. Seems quite logical- after the event. Bogmonster, Would you expect a delaminated hose to also show up in live data-i.e. lower than expected MAP readings Quote Link to comment Share on other sites More sharing options...
BogMonster Posted July 3, 2009 Share Posted July 3, 2009 Don't think I have ever seen a Td5 with a collapsed hose - just loads of 300s - so I'm not sure. However low airflow/pressure doesn't usually register a fault code - a dud AFM won't trigger a fault code if the AFM is just under-reading (as a lot of them do when they fail) - the power output will just be way down. Quote Link to comment Share on other sites More sharing options...
therealboss Posted July 3, 2009 Share Posted July 3, 2009 New hose an it is running fine again for future reference I will try and get some photos up. Quote Link to comment Share on other sites More sharing options...
d1scv Posted July 3, 2009 Share Posted July 3, 2009 Don't think I have ever seen a Td5 with a collapsed hose - just loads of 300s - so I'm not sure. However low airflow/pressure doesn't usually register a fault code - a dud AFM won't trigger a fault code if the AFM is just under-reading (as a lot of them do when they fail) - the power output will just be way down. So maybe this is a yes. Accepting that that low MAP and/or MAF readings will not show up as a fault, it is likely that a delaminated turbo pipe will show unusual readings on live data. Sorry- that's a question! Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 3, 2010 Share Posted February 3, 2010 Please help something like this problem is on a Td5 Disco of my friend. But he has an fuel leak from presure regulator (doesnt have smoke) engine starts and works for 10-15 minutes then when trying to start once more it doesnt start and just after a lot of cranking it starts works fine for 1km and cuts off again. I whant to mention theat he has changed the entire housing with fuel return pipe but he didnt replaced the metal gasket (he used special silikon).He also changed the fuel pump.diagnostic doesnt show problems. What can it be please help ... Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 3, 2010 Share Posted February 3, 2010 Please I am desperate... :( :( Quote Link to comment Share on other sites More sharing options...
cipx2 Posted February 3, 2010 Share Posted February 3, 2010 Tell your friend to try replace the injector washers (and the O-rings while he's at it). Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 3, 2010 Share Posted February 3, 2010 But it cant be the ECU ? Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 4, 2010 Share Posted February 4, 2010 Pease can you tell me if Td5 from a Disco 2002 has an BMW engine ? Quote Link to comment Share on other sites More sharing options...
bobtail4x4 Posted February 4, 2010 Share Posted February 4, 2010 the td5 is a landrover engine. NOT a bmw one. Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 4, 2010 Share Posted February 4, 2010 But wy I have seen in net theat Td5 is the same as by BMW - is there an year of a model from LR wich has the BMW engine? Quote Link to comment Share on other sites More sharing options...
therealboss Posted February 4, 2010 Share Posted February 4, 2010 But wy I have seen in net theat Td5 is the same as by BMW - is there an year of a model from LR wich has the BMW engine? From what little I know, Landrover designed and built the TD5 engine before BMW too them over and BMW just rubber stamped the use of the TD5 engine. Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 4, 2010 Share Posted February 4, 2010 It means theat they the Td5 and Bmw engine are common? Quote Link to comment Share on other sites More sharing options...
cipx2 Posted February 4, 2010 Share Posted February 4, 2010 NO, it means BMW said it's ok to continue the project on the Td5 cylinder diesel as BMW didn't have any other engine to replace it with. From what I know, BMW helped with the (early) manufacturing of the Td5 crankshaft as they had a factory better equipped for this - and that's about all the BMW contribution to the Td5 project. BMW didn't ever make a 5 cylinder diesel engine, so the Td5 can't possibily be a BMW engine in the first place. They only made 4, 6 and V8 diesel engines, see List of BMW engines. See this article for the rest of the Td5 engine story. Land Rovers with BMW engines: - Freelander TD4 (2001-2006) which has a 4 cyl 2.0 diesel M47 engine. - RR MK II (P38) with the 6 cyl 2.5 diesel M51 engine - RR Mk III with the V8 4.4 petrol M62 Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 4, 2010 Share Posted February 4, 2010 NO, it means BMW said it's ok to continue the project on the Td5 cylinder diesel as BMW didn't have any other engine to replace it with. From what I know, BMW helped with the (early) manufacturing of the Td5 crankshaft as they had a factory better equipped for this - and that's about all the BMW contribution to the Td5 project. BMW didn't ever make a 5 cylinder diesel engine, so the Td5 can't possibily be a BMW engine in the first place. They only made 4, 6 and V8 diesel engines, see List of BMW engines. See this article for the rest of the Td5 engine story. Land Rovers with BMW engines: - Freelander TD4 (2001-2006) which has a 4 cyl 2.0 diesel M47 engine. - RR MK II (P38) with the 6 cyl 2.5 diesel M51 engine - RR Mk III with the V8 4.4 petrol M62 Very useful as allways-Thanks very much. Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 4, 2010 Share Posted February 4, 2010 But what do you think about the problem of my friend's Disco ? Quote Link to comment Share on other sites More sharing options...
therealboss Posted February 4, 2010 Share Posted February 4, 2010 But what do you think about the problem of my friend's Disco ? Check there's no oil in the injector the loom! Quote Link to comment Share on other sites More sharing options...
cipx2 Posted February 4, 2010 Share Posted February 4, 2010 But what do you think about the problem of my friend's Disco ? Already told you what I think in post #12. If the engine (more or less) starts on cold, looses power or stops when approaching operating temperature and it can't be restarted or restarts after one or more bleeding procedures then runs briefly and stops again, if all ok with the fuel pump and the fuel pressure regulator then the next thing to try is to replace the injector copper washers. One or more washers can seal satisfactory when engine is cold but when the engine gets heated up, allows compression to past into the fuel rail which will manifest as the fuel system has 'air' in it. Quote Link to comment Share on other sites More sharing options...
ebdesignDEFENDER Posted February 5, 2010 Share Posted February 5, 2010 Thanks very much I hope it helps. Quote Link to comment Share on other sites More sharing options...
MONTENEGRO Posted February 9, 2022 Share Posted February 9, 2022 (edited) I have same problem 12years after your post, i read a lot forums and I'm desperate now, nobady at the end goes back to forum and write his solution, I was replace buck of parts and I steel have cut out uphil, Disco 2 TD5. Edited February 9, 2022 by MONTENEGRO Write mistake Quote Link to comment Share on other sites More sharing options...
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