djoptix Posted August 10, 2017 Author Share Posted August 10, 2017 Shit you are brave taking one of these on. They really are hopeless I'm going to get it some new number plates and I'm considering putting this on them. Lacquer Peel, Supernaut, Kiltox and 3 others 6 Link to comment Share on other sites More sharing options...
djoptix Posted August 12, 2017 Author Share Posted August 12, 2017 Sit rep. Lambda sensor fault hasn't reappeared. My one of these looks like money well spent. Can't believe you can actually pay garages for diagnosis! The world's gone mad... Link to comment Share on other sites More sharing options...
beko1987 Posted August 13, 2017 Share Posted August 13, 2017 It's madness isn't it! My egr fault hasn't appeared after oh no renaulting the code away and cleaning it out! It's wonderful! Granted, I'm scared to re scan and see what's reappeared but you know, wahey! Link to comment Share on other sites More sharing options...
djoptix Posted August 27, 2017 Author Share Posted August 27, 2017 Related to Espace. My brother-in-law has recently bought a thoroughly shite VW Sharan, which has turned out to be very down on power. He's therefore using the Espace to take his family to Devon over the BH weekend, and the Shiteran is here. I thought I'd have a look at it. His garage reckon it has a turbo problem, but I'm not 100% convinced that they have ruled out the MAF sensor. I know very little of VAG tdi engines, but apparently MAF sensor failure is common. Symptoms of this car are that it's miles down on power, will rev at part throttle but if you are proceeding and put your foot to the floor, nothing happens. I haven't tested the sensor yet, or removed it for inspection, but I have read that some cars have a 4 wire sensor and some have 5. This car has a MAF sensor with 5 tabs on, but there are (definitely) only 4 wires in the plug. Is that normal? Link to comment Share on other sites More sharing options...
panhard65 Posted August 27, 2017 Share Posted August 27, 2017 Try unplugging the MAF then take it up the road. If you get full power then thats the fault, they can go faulty without putting a fault code in. Link to comment Share on other sites More sharing options...
red5 Posted August 27, 2017 Share Posted August 27, 2017 Indeed. As long as its within operating parameters they'll be no trouble code. Insert garagebashing comment here.... Link to comment Share on other sites More sharing options...
J4mes Posted August 27, 2017 Share Posted August 27, 2017 1.9 tdi by any chance? I'd clean/blank egr, mr muscle vnt vanes on turbo and check all vacuum hoses are ok, especially any that are boost or N75 valve related.If you're feeling more adventurous pull the intercooler and inlet manifold and clean them both as theyre most likely full of oil/gunk. cobblers, Dick Longbridge and djoptix 3 Link to comment Share on other sites More sharing options...
Pillock Posted August 27, 2017 Share Posted August 27, 2017 I'm just amused that your BIL has left you his reliable German peoplewagen because it's not running right, and entrusted his holiday to a three and a half litre V6 Espace. Well played. Is it boosting? Quite a common fault is the little lever that operates the variable vanes gets stuck, or even pops off the joint. Then there's the possibility the vanes themselves are stuck, which means lobbing all sorts of kitchen cleaning products through the intake is a possible fix (I'd stop short of a scouring pad though) I had a very similar problem with plenty of low-down power on a 1.9TDI of pre-PD vintage. Turned out to be the lift sensor on one of the injectors (there's only one), wire snapped so the ECU wasn't getting feedback. That, from memory, threw a light on but only after a fair amount of driving it like that - I had to get it to within 10 miles from home to get recovered, so limped it to 9.9999 miles away. Pretty obvious though, the wire is right in front of you when you lift the bonnet. Does sound sensory. It's all very well saying "it's a turbo problem mate" - if it's mechanical, then that's expensive but it'll be lobbing loads of smoke out and making a racket. Plenty of little things that will stop it from spooling up. Sounds like a proper fobbing off. Link to comment Share on other sites More sharing options...
djoptix Posted August 27, 2017 Author Share Posted August 27, 2017 Try unplugging the MAF then take it up the road. If you get full power then thats the fault, they can go faulty without putting a fault code in. Yes, I should have mentioned I've done that. No change in symptoms - which is sort of one reason I was hoping it was MAF sensor related - engine behaves the same whether it's plugged in or not, therefore it might be dead... I'm just amused that your BIL has left you his reliable German peoplewagen because it's not running right, and entrusted his holiday to a three and a half litre V6 Espace. Well played. When you put it like that... Does sound sensory. It's all very well saying "it's a turbo problem mate" - if it's mechanical, then that's expensive but it'll be lobbing loads of smoke out and making a racket. Plenty of little things that will stop it from spooling up. Sounds like a proper fobbing off. My thoughts exactly. It doesn't make any untoward noises, doesn't smoke at all, doesn't suddenly lose power, the delivery of what power there is is smooth. It's just gutless when you put your foot down. It will reach high revs when not under load, and in the first 20% of throttle travel it feels quite eager, up to a point. I'll get the multimeter out later on and possibly clean the MAF sensor if I can find some switch cleaner. 1.9 tdi by any chance? I'd clean/blank egr, mr muscle vnt vanes on turbo and check all vacuum hoses are ok, especially any that are boost or N75 valve related.If you're feeling more adventurous pull the intercooler and inlet manifold and clean them both as theyre most likely full of oil/gunk. Yes, 1.9 tdi. I'll see what he wants to do with it/how adventurous he's feeling. Apparently, since it turned out to be a lemon, the guy that sold it to him has offered to give him a partial refund if he re-lists it on ebay, i.e. make up the difference to what he paid for it. Which I thought sounded extremely decent, and if he turns out to keep his word, a serious result for BIL. Apparently the Espace is behaving itself apart from occasionally refusing to open the boot Dick Longbridge and J4mes 2 Link to comment Share on other sites More sharing options...
djoptix Posted August 27, 2017 Author Share Posted August 27, 2017 OK, so I've tested the MAF with multimeter - it showed 2.2v at idle (no load) rising to about 3.7v at 5k RPM (again no load). It is mucky, with oil on it. The airbox is filthy too. But to be honest, if BIL can get a refund for the car, I'm not going to do any more digging unless it becomes necessary. It seems that the MAF is at least doing something when the airflow varies, though I have no idea whether those voltages are anything like valid...? One thing I can't work out though, perhaps someone can enlighten me... as far as I can work out, the airflow comes in at the OS wing, and goes straight into the airbox, then through the MAF sensor; then down and under the block, through the intercooler, back under the block and up the other side, into the turbo and then the inlet manifold. So how TF does oil get into the inlet air and onto the MAF sensor? Or into the intercooler, come to that? (there is oil on the intercooler hoses, and J4mes, I have no doubt your statement below is correct...) theyre most likely full of oil/gunk. J4mes 1 Link to comment Share on other sites More sharing options...
Asimo Posted August 27, 2017 Share Posted August 27, 2017 Air goes through the cooler AFTER the turbo has compressed it. Oil gets into the air either from the turbo itself or, more likely, from the engine breather etc. J4mes 1 Link to comment Share on other sites More sharing options...
KruJoe Posted August 27, 2017 Share Posted August 27, 2017 ...a thoroughly shite VW Sharan... down on power. There's loads of info out there on these, but it's worth reading about Stripped_Freds exploits. He bought one off me earlier in the year and had similar issues: http://autoshite.com/topic/27468-stripped-freds-sharan-family-wagon-tdi-tinkering/page-3 and then... http://autoshite.com/topic/27650-vw-sharan-tdi-the-diary-of-an-amateur-mechanic/page-1 HTH Link to comment Share on other sites More sharing options...
J4mes Posted August 27, 2017 Share Posted August 27, 2017 Oily residue from crank case breather combines with egr 'soot' to make a lovely sticky coating on vnt vanes, inlet manifold, etc...The intercooler seems to fill with oil I think because its the lowest point, could be wrong though..The 1.9tdi is a pretty basic, very reliable unit, mine is knocking on 200k miles, on the original turbo too. Well worth some effort.. Link to comment Share on other sites More sharing options...
djoptix Posted August 28, 2017 Author Share Posted August 28, 2017 Thanks KruJoe, that was a really interesting read. It seems that essentially, this engine is great except that it clogs up all over the inlet side. Since I anticipate this one hasn't been particularly well looked after, there are any number of things it could be, and any or all of them would probably make it a bit better... J4mes 1 Link to comment Share on other sites More sharing options...
stripped fred Posted August 28, 2017 Share Posted August 28, 2017 Mine was entirely due to sticky vanes on the turbo. Fixed by undoing the exhaust on the turbo side and filling it with Mr muscle. Leave overnight and then fine. Had to do that a couple of times. I doubt it's anything as serious as a new turbo. J4mes 1 Link to comment Share on other sites More sharing options...
djoptix Posted August 30, 2017 Author Share Posted August 30, 2017 The Sharan has gone and the Espace is back, thankfully. I had happy messages from the BIL to the effect that "it goes like a bloody train!!!" Indeed it does! It's done about 1000 miles so far and seems to be behaving itself, averaging 23-24mpg with a mix of driving, so I'm going to start looking at the various (though surprisingly few) niggly bits that aren't working. At some point it needs to go and have the parking brake sorted but since it's MOTd until next year and is perfectly happy to be left in Park, I'm not feeling very pressured to fork out for that to be fixed just yet. Tyre pressure sensors and GPS are first on the list. The TPS aren't really something I'm desperate for, it's just a bit annoying that the car reminds me they aren't working every time I turn it on. From some forums I understand that it's under the passenger seat on the outside of the car. I had a look and managed to take a couple of photos of (what I think is) it. This one was intended to help me work out how to get it off the car, but it started raining so I stopped trying. This one shows the connector going into it. It's filthy and corroded and I'm pretty sure that some of a wire broke away in my hand while it was fiddling with it, so I reckon if I can get some access to this and do a bit of rewiring, we might be in business, to some degree at least. Incidentally my super diagnostic tool confirms that something is fundamentally up with the receiver, it's not just a case of the sensors being knackered (well it may be, but we don't know which yet). Meanwhile I can see that the faulty parking sensor is on the right... hopefully that means the outside right one; I'll start working in from there. Schaefft 1 Link to comment Share on other sites More sharing options...
Supernaut Posted September 1, 2017 Share Posted September 1, 2017 Renault were just absolutely hilarious* with their early-2000s cars. Let's put the electronic handbrake motor, TPMS receiver, and other vulnerable electronics on the underside of the car with no real guards or covers in place! WCPGW?! Mega respect for cracking on with this! Stevebrookman, Lacquer Peel and mk2_craig 3 Link to comment Share on other sites More sharing options...
stuboy Posted September 1, 2017 Share Posted September 1, 2017 we have a 1.9 dieseasel at work.. drives ok.. Link to comment Share on other sites More sharing options...
lexi Posted September 1, 2017 Share Posted September 1, 2017 The good thing with V6 version is that it has lots of Jap stuff on it. Coil packs are Nippon Denso so no shitty french (delco) like failures there. Hitachi fuel injection. Very good engine. The spark plug change will be interesting. It was tight enough on my Vel Satis. What like is suspension on these? Stevebrookman 1 Link to comment Share on other sites More sharing options...
djoptix Posted September 1, 2017 Author Share Posted September 1, 2017 Difficult to tell at the moment because there's a distracting clonk at the front, suspect drop links or something like that. Once that's sorted I can let you know! It's certainly quite wafty and the steering wheel feels quite remote from the front end. It's smooth but not too barge-like. Thankfully the previous owner did the spark plugs early this year so I won't have to face that for a while Stevebrookman 1 Link to comment Share on other sites More sharing options...
djoptix Posted September 2, 2017 Author Share Posted September 2, 2017 I had a precious 45 minutes in between kids napping etc today, so was going to have a look at the TPMS on the Espace, but the Megane was closer to the drive. I bought this a few months ago and it goes like greased weasel shit. However, I haven't done any maintenance on it apart from putting some oil in it about 20 miles after I'd bought it, when the service light came on and I thought "sod it, I've bought a lemon". However, I put a litre or so of oil in it and it hasn't demanded anything since then. What's more, literally everything on it seems to work, even the silly little electric opening rear quarter windows. Not bad for a 15 year old French car. Anyway I got as far as doing the plugs and air filter, and they were filthy. NSFW dirty filth follows. Having taken pictures of filthy old bits, I've now found that I don't have any pictures of the actual car, but it looks like this, except very very much less yellow. It's a 2.0 with the F4R engine - same as Clio 172/182 etc although detuned so it only produces 140bhp in this car. It's very hard to find an unmolested 2.0 Megane Coupe nowadays - most of them look like this (AAAWWWW SAAAAFE BRUUVVVV etc): Dave_Q, Sloth in a bowl, RobT and 2 others 5 Link to comment Share on other sites More sharing options...
Kiltox Posted September 2, 2017 Share Posted September 2, 2017 Phwoaaaar that is pure filth Link to comment Share on other sites More sharing options...
Sloth in a bowl Posted September 2, 2017 Share Posted September 2, 2017 Another owner of an unmolested Megane Coupe with the 140hp motor here. Bought it for £400, done 2000 hassle free miles so far and I now feel like it deserves to be looked after, which means getting dirty and doing some work (sigh).My motor does burn a bit of oil. Link to comment Share on other sites More sharing options...
Split_Pin Posted September 2, 2017 Share Posted September 2, 2017 That's exactly what the air filter on my Megane was like when I bought it. I would love a 2.0RXE hatch model. Link to comment Share on other sites More sharing options...
Pillock Posted September 2, 2017 Share Posted September 2, 2017 To me, these are still in decent Renault territory before everything went to shit with electronics controlling the indicator stalks and glovebox latches or whatever. A dickhead I lived with had a black one, I think he passed his test and got a ZX Volcane, and then one of those a year after and it was only 4 or 5 years old. Stupidly quick, pretty reliable too until it sat for a few weeks after he bought a Clio 172. That seemed to generate a few faults typical of not being used - battery packed up, the rear electric windows kept popping the fuse, grumbly bearings. Link to comment Share on other sites More sharing options...
SiC Posted September 2, 2017 Share Posted September 2, 2017 The Clio 172 only came in 3 door and the rear windows were fixed glass? Link to comment Share on other sites More sharing options...
djoptix Posted September 3, 2017 Author Share Posted September 3, 2017 I think Pillock means that when the Megane sat around for a bit (after the owner bought a 172) that was when it developed some niggles. Link to comment Share on other sites More sharing options...
Pillock Posted September 3, 2017 Share Posted September 3, 2017 Exactly that, he bought the 172 and the Megane got ignored and dumped in the garage for a while. It had those electric pop-out windows that were never quick but seized remarkable quickly. Sorry, I've read it back and it's a bit confusing I agree. Link to comment Share on other sites More sharing options...
Sloth in a bowl Posted September 3, 2017 Share Posted September 3, 2017 How come other people got electric windows in the back of their Megane Coupes, whilst I get electric switches for the back but only hand pop windows? Something is wrong. Link to comment Share on other sites More sharing options...
Pillock Posted September 3, 2017 Share Posted September 3, 2017 The electric switches should work the poppers. I don't think they're intended to be opened by hand if they're electric though so maybe it was an optional extra, and someone's either fitted low spec windows or a high spec centre console to a car that didn't have it/them Link to comment Share on other sites More sharing options...
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