JKD Posted June 28, 2012 Report Share Posted June 28, 2012 Hi all you PW mechanics, hope you can help with a diagnosis to this query. My Trafic dci 100 1.9 [54 plate] has just developed its 2nd fault. The first was [18 months ago], it wouldn't restart when hot, having to wait a few minutes, then no problem starting, or running. This was when I was fueling up in Tesco's exclusively. Since stopping going to T's for my fuel this fault has cured itself?!?! Right, now the current fault. The coil light is now nearly always the last light to go out, used to be the first/second. Also the engine rev's have increased, but go back to normal when the engine warms up. Also the water temp guage flickers up and down sometimes, but now just doesn't move unless the cooling fan kicks in, which is intermittently. Also there's an excess of dark smoke from the exhaust, and it seems more sluggish than normal going uphill, not much but noticable. No problems with starting/re-starting, or with the engine cutting out, just these problems. Can anyone help with this and offer some advice for a complete non-mechanic type? It has been suggested that the timing belt might be about to go? Any help and advice as to the possible cause and solution will be much appreciated, and some virtual refreshments will be handed out Thanks in advance. Chris Quote Link to comment Share on other sites More sharing options...
clakk Posted June 28, 2012 Report Share Posted June 28, 2012 Hi all you PW mechanics, hope you can help with a diagnosis to this query. My Trafic dci 100 1.9 [54 plate] has just developed its 2nd fault. The first was [18 months ago], it wouldn't restart when hot, having to wait a few minutes, then no problem starting, or running. This was when I was fueling up in Tesco's exclusively. Since stopping going to T's for my fuel this fault has cured itself?!?! Right, now the current fault. The coil light is now nearly always the last light to go out, used to be the first/second. Also the engine rev's have increased, but go back to normal when the engine warms up. Also the water temp guage flickers up and down sometimes, but now just doesn't move unless the cooling fan kicks in, which is intermittently. Also there's an excess of dark smoke from the exhaust, and it seems more sluggish than normal going uphill, not much but noticable. No problems with starting/re-starting, or with the engine cutting out, just these problems. Can anyone help with this and offer some advice for a complete non-mechanic type? It has been suggested that the timing belt might be about to go? Any help and advice as to the possible cause and solution will be much appreciated, and some virtual refreshments will be handed out Thanks in advance. Chris oh dear i sold my 1.9 renault laguna last year after replacing the turbocharger.the glow plug coil is also the turbo fail light on a diesel .you have an EGR <exhaust gas recycle..>valve next to your turbo which fowls up and stays open allowing oil into the turbo ,hence the smoking exhaust.im afraid your turbo is dying the valve is about 80quid ,a recon turbo 350 quid .new oil feeds n gaskets about 50 quid.the turbo makes your engine go up n down hence weird running or revving .sorry if you go on the renault owners forum there are page after page of this problem .and yes just after replacing the turbo the cambelt did go /part ex it mate .the orignal garrett turbos renault used were very good but now the have copies made in france of dubious reputation n quality.temp sensors on diesels dont last many years so a 54 plate its probably old age.as i say the RENAULT OWNERS CLUB FORUM is littered with your storey im afraid its time to change it :no: Quote Link to comment Share on other sites More sharing options...
unclemicky Posted June 28, 2012 Report Share Posted June 28, 2012 There must be over 100 pages of renault turbo problems , my 03 laguna's turbo went cost £600 to put it right , JKD has it started to "whistle" yet as the revs climb , if so you turbo is on its way out , Quote Link to comment Share on other sites More sharing options...
andypaint Posted June 28, 2012 Report Share Posted June 28, 2012 I've got same van, and had similar probs. I cleaned egr valve and replaced air flow mass sensor. Cured the problems, but coil light still on as it has to be reset by an auto electrician. Quote Link to comment Share on other sites More sharing options...
JA3llis Posted June 28, 2012 Report Share Posted June 28, 2012 Coil is an engine management light on all diesels. When this comes on it doesnt just mean your turbo is ******** could be any problem with the engine which the ecu has picked up. Quote Link to comment Share on other sites More sharing options...
Dunkield Posted June 28, 2012 Report Share Posted June 28, 2012 I would blank the EGR off first before writing the turbo off? you should be able to get a kit of eBay. Quote Link to comment Share on other sites More sharing options...
JA3llis Posted June 28, 2012 Report Share Posted June 28, 2012 EGR, Injectors, Diesel pump and turbos are all common on these as is the gearbox if its a 6 speed and the dual mass rumble at 70k Quote Link to comment Share on other sites More sharing options...
JKD Posted June 28, 2012 Author Report Share Posted June 28, 2012 Many thanks for all your replies guys I'll digest some of the info and try to speak to a mechanic to see if I get told anything different. Is it likely to just pack up, or is it ok to run [carefully, I don't race about] for a while? regards Chris Quote Link to comment Share on other sites More sharing options...
JA3llis Posted June 28, 2012 Report Share Posted June 28, 2012 Really you carnt tell it need the diagnostic trouble codes reading to get an idea of the problem area. Good luck hope its not too serious Quote Link to comment Share on other sites More sharing options...
Paul223 Posted June 29, 2012 Report Share Posted June 29, 2012 Try the engine temp sensor, sounds like it's reading to low, hence why the glow plus are active longer and the ecu is giving more fuel (smokey). Nice and easy cheap fix, iirc two sensors for temp on your van Quote Link to comment Share on other sites More sharing options...
Paul223 Posted June 29, 2012 Report Share Posted June 29, 2012 To show a diagnostic fault the glow plug light will flash on and off Quote Link to comment Share on other sites More sharing options...
al4x Posted June 29, 2012 Report Share Posted June 29, 2012 Try the engine temp sensor, sounds like it's reading to low, hence why the glow plus are active longer and the ecu is giving more fuel (smokey). Nice and easy cheap fix, iirc two sensors for temp on your van sounds most likely, if you have enough oil bypassing the turbo seals to be an issue for starters you would notice increased oil consumption, if its drinking oil like a scott drinking whiskey then get it looked at sooner rather than later as when they go the engine just revs its tits off till you either stall it or it runs out of oil. If the latter it junks the engine pretty much Quote Link to comment Share on other sites More sharing options...
Paul223 Posted June 29, 2012 Report Share Posted June 29, 2012 Most likely? I'll be right, anyone like to lay a wager? Quote Link to comment Share on other sites More sharing options...
al4x Posted June 29, 2012 Report Share Posted June 29, 2012 bear in mind its a renault so probably the sensor is fine its probably the wiring from it Quote Link to comment Share on other sites More sharing options...
Paul223 Posted June 29, 2012 Report Share Posted June 29, 2012 Nah, sensor bet it reads minus 40 in live data, faulty writing should throw a trouble code for open circuit or short to ground type thing and bring the management light on Quote Link to comment Share on other sites More sharing options...
JKD Posted June 29, 2012 Author Report Share Posted June 29, 2012 (edited) Thanks for the extra help Paul223. If it helps, I slept in my van one night a few months ago [don't ask ] and started the engine a couple of times through the night. On the third time, at first light [it was very cold that night] this latest fault started. Engine revving, fan kicking in randomly, temp gauge flicking about. Would this have burnt something out, with the van being stationary? It's only recently that it's getting worse, with the exhaust noticeably darker. Oil consumption has been getting higher recently, only noticeable when parked on a slant and the oil and service lights stay on. I hope it is an easy cheap fix, 'cos I'm skint :unsure: Thanks to all, will keep you informed. regards Chris Edited June 29, 2012 by JKD Quote Link to comment Share on other sites More sharing options...
Livefast123 Posted June 29, 2012 Report Share Posted June 29, 2012 Sounds like it could be a MAF problem combined with maybe a split intercooler hose which would cause overfuelling (smoke) and a lack in power. Do you notice a louder than normal woossh sound when on boost? However being a Renault and the fact that my parents have the same symptoms on their Megane 1.9 Dci before the turbo let go i'm not hopefull....luckily theirs was in warranty. Don't top your oil up too much as if the EGR/seals are suspect you'll end up with a runaway. Best way to stop that is to put the engine in 5th and drop the clutch to stall it. Quote Link to comment Share on other sites More sharing options...
JKD Posted June 29, 2012 Author Report Share Posted June 29, 2012 (edited) Sounds like it could be a MAF problem combined with maybe a split intercooler hose which would cause overfuelling (smoke) and a lack in power.Do you notice a louder than normal woossh sound when on boost? However being a Renault and the fact that my parents have the same symptoms on their Megane 1.9 Dci before the turbo let go i'm not hopefull....luckily theirs was in warranty. Don't top your oil up too much as if the EGR/seals are suspect you'll end up with a runaway. Best way to stop that is to put the engine in 5th and drop the clutch to stall it. Cheers for your help.... Can't say I notice this? Sorry,,,, what's MAF and EGR? You'll gave to spell it out for a total non mechanical type please fella atb Chris Give me a building query,,,, now that's my thing Edited June 29, 2012 by JKD Quote Link to comment Share on other sites More sharing options...
Livefast123 Posted June 30, 2012 Report Share Posted June 30, 2012 MAF is the mass air flow sensor usually located on the air intake system after the airbox and EGR is the exhaust gas recirculation valve which puts dirty air back into the engine to clean up the emissions. Quote Link to comment Share on other sites More sharing options...
Rupert Posted June 30, 2012 Report Share Posted June 30, 2012 This is not very encouraging,i have a 5 yr old traffic aprroaching 90k,just cant afford to swap yet. Quote Link to comment Share on other sites More sharing options...
Paul223 Posted July 1, 2012 Report Share Posted July 1, 2012 I'm still waiting on my virtual pint of guinness for fixing your van! Quote Link to comment Share on other sites More sharing options...
JKD Posted July 3, 2012 Author Report Share Posted July 3, 2012 I'm still waiting on my virtual pint of guinness for fixing your van! Sorry fella, not got it fixed yet been away over the weekend and just got back. Popping in to see a mechanic one day this week. Will keep you all informed. Once again,,,, many thanks for all the advice and suggestions. Quote Link to comment Share on other sites More sharing options...
Paul223 Posted August 18, 2012 Report Share Posted August 18, 2012 i recon my virtual pint will have evaporated by now Quote Link to comment Share on other sites More sharing options...
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