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roy4matra
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« Reply #2 on: April 24, 2009, 01:36:45 am » |
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... and i'm struggling to find a local garage with the diagnostic kit save the main costly dealer.
Has anyone had any similar problems or have any clues as to what might be the cause of the problem?
These are complex systems compared to older diesels and unless you understand them, it is very difficult to explain in a few words just how you should even go about diagnosing faults. However, the first thing should always be a full diagnostics check, so you can see what faults are being indicated and what fuel pressures you have. These systems need around 250 to 300 bar fuel rail pressure just to idle and will go up to 1400 bar when running. So if the pressure is down for whatever reason it simply will not perform properly. You only need a spec of dirt a quarter of the thickness of the human hair to block certain holes, so you can see that the filter is very important, and as Martin has said, if it hasn't been changed in a while you may need to change it as it could be causing the restriction. As there is a flow tap on the filter for bleeding the system, if that is not fully in the correct position for running, it could cause a problem. If an injector leak off is leaking fuel it will drop the pressure sufficiently to cause a problem, and one test is with a set of calibrated bottles to check the leak-offs of all injectors. It is unlikely a normal garage would have these where a dealer will so whilst the dealer may seem expensive, they are often the only people who will understand or have the equipment to do the job. However, first you need the diagnostic. Ask for that and no more if you wish to keep the cost down. You may then use the results to start to trace the fault. Whatever you do, do NOT open or slacken any high pressure connection especially when the engine is running. You can be harmed by the extremely high pressures generated. Roy
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« Last Edit: April 24, 2009, 10:40:02 pm by roy4matra »
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Lennart Sorth
Administrator
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« Reply #8 on: May 04, 2009, 08:01:33 pm » |
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Welcome aboard Mr Pettitt What car are we actually talking about ? - J63, JE "td" or JE "dci" ? ( model overview: http://www.matrasport.dk/Cars/Espace/history.html ) Cut-outs on dci's can also be caused by a malfunctioning TDC sensor or poor connection to it - however that would normally be accompanied by the zigzag symbol and warning buzzer on the dash - wouldn't it ? - also you said it was happily ticking over, and only cut out under load. The TDC is however relatively easy to access from below: http://www.matrasport.dk/Cars/Espace/Gallery1/Med/tdc_g9t.htmlSluggish acceleration must be something else, - EGR most likely, but fuel and airfilters as previously mentioned. I have also heard from a 2.1td owner that on a long journey the turbo-hose kept coming off - which gave some interesting maneuvers in the middle of French traffic ... :-) /Lennart
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« Last Edit: May 04, 2009, 11:15:16 pm by Lennart Sorth »
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RPettitt
Newbie
Posts: 9
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« Reply #9 on: May 05, 2009, 10:35:33 am » |
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Cut-outs on dci's can also be caused by a malfunctioning TDC sensor or poor connection to it - however that would normally be accompanied by the zigzag symbol and warning buzzer on the dash - wouldn't it ? - also you said it was happily ticking over, and only cut out under load.Hi Lennart It's the JE DCI and what you have described above is exactly what happens. The car becomes sluggish then the above happens. So it looks like a have quite a few this to sort Thank you for the advice Rob
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RPettitt
Newbie
Posts: 9
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« Reply #10 on: May 08, 2009, 03:21:29 pm » |
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Hi all Thanks for your help so far. I started to check out other forums including honest john, renaultforums and parkers amongst other and this appears to be a common problem. I'm not exactly sure where to start to be honest because everyone has a different opinion on it, so far i have seen the following suggestions: - Replace TDC sensor and wire - Check parts are earthed properly and wires are not touching - Replace air and fuel filters - Replace fuel pump and injectors - Replace solenoid The problem is that there doesn't appear to be any general consensus on what causes the problem and i can' really afford to do the more expensive things so i think i might just get it back to the dealer For interest the following threads have the biggest discussions on the issue: http://www.honestjohn.co.uk/forum/post/index.htm?v=e&t=24466&m=614963http://www.renaultforums.co.uk/showthread.php?t=25719Rob
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TheJoker
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« Reply #12 on: May 08, 2009, 07:02:38 pm » |
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RPettitt, I'm in a similar situation to you, and I've also had a similar problem to you. Now I have another one. HAHAHA! My first problem was the TDC sensor. The car refused to start despite grinding the starter motor, and sometimes it just cut out. I fixed that by changing the TDC sensor. It was a very easy job to do, once you can get under the car. Read more here: http://www.matrasport.dk/forum/index.php/topic,1281.0.htmlHowever, right now I've got an intermittent problem (described here: http://www.matrasport.dk/forum/index.php/topic,1349.0.html), but just like you. I've received a lot of helpful hints from this forum, especially Roy, but I just don't seem to be able to do anything about the issues. End result is the car is not being used, nor fixed. I'm hoping that I'll find some time this weekend to start going over the list of things to try. I feel quite bad about having received top tips but not done anything about them. Sorry to all who've helped! Do the things that Martin has suggested (I need to do air filter and fuel filter too) and then do the TDC sensor. It's an easy fix if you can raise the car and it might fix all of your problems. Good luck!
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Grand Espace 2.2 dCi 2001 Silver KTM 990 SuperDuke R Dead: BMW K1200R
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