I really want to blank it out for a bit more power.. any idea why mine had this result and what i might try.. Thanks for that just cleaned mine on my Trafic and so far it seems to have solved the problem. If all ok check other pipe. This helps to ensure the car maintains fuel efficiency and emits fewer emissions. Rain Defence (author) from UK on June 29, 2014: I have exactly the same problem on mine! Once you've got the bolts undone, then half of the EGR valve should easily lift off and out. I did have problem whit EGR valve, my van Renault master dci100 2.5l, 2005 year, problems no power up to 2500 rev, I changed EGR valve, still same problem, then I just unplugged cables from EGR valve, simple and it works, I believe no wan say anything about electric fault, this is the 5v power supply from ECU, I attached link from yotube how to test and fix the problem, it is easy, and I hope it helps to most of cases, you can try this be for you go to any garage and start changing any parts. At this high-temperature, inert nitrogen naturally present in air burns creating oxides of nitrogen (NOx). I look at the top 3 best emergency window breakers for cars. Let's hope I'm able to iron out a few gremlin$ to get these engines performing as they should be! If you have any questions, or comments, please leave them below. When the EGR valve clogs up (they always do eventually on all diesel engines) this mixture is thrown out of kilter. ps I also broke a lug of the part of the erg valve that fits in the manifold but got it out & you don't use the holes when refitting so no probs there . Mines back to its old self!! they are saying that whistle sound is more than likely the turbo and so it looks like im heading down that route....so looking at a £1000+ bill !!!!!!! You'll find a link to it by scrolling down the page. I have had issues with my primastar cutting out just after starting. I've had very similar problems to previous posters and thought I'd share just in-case its of any help. I have done quite a bit of motorway driving lately and while just leaving it in limp mode and on about 4 occasions while in limp mode the engine has cut out completely with a bunch of extra red lights coming on. A common problem with EGR valves is that they clog up with soot and don't function properly. On another note, the fine-wire mesh in the MAF sensor must also be restricting airflow far more so than the EGR valve does. As you speed up and the engine reaches its operating temperature the valve gradually opens, however, should you slow down or stop the valve will gradually close. Cheers. eventually if you let it runnig not driving it will be ok any rev it will make it but than when you come to a hill even if you're in the right gear engine management light will come on with flashing stop light and will cut out it used to start again but it just got heavier and heavier and now wont start at all only with easy start. My van pisses out black smoke on pulling away, and when accelerating pretty much anywhere,flat,downhill,uphill, had the egr valve changed oct 14 but it's since then that I've noticed the smoke issue, had new cat fitted, air,oil and fuel filters done and injector cleaner put thru but nothing as worked yet, still getting black smoke, any ideas? This is because at low rpm the fuel ignites early when it meets the high temperature. Egr valve helps the engine. Disconnect each pipe and blow down and make sure all clear and not split. The valve has a plug going into it, which is the solenoid control wire. Hi I have a 2005 primastar that all of a sudden has lost power.it drives but a lot slower than normal.sometimes the glow plug light comes on and the van goes into limp mode.I took out the egr valve and cleaned the back of it..mine didn't want to come apart from were the bolt holes are and i wasn't sure if it was supposed to until i seen your picture above.ill try that again today..do i just lever it apart?any other ideas would be great..thanks Andrew. I like to share any knowledge I have to help other people where possible. Its a 2009 1.9dci sl27. So to prevent any more damage I put back together but now I have no revs past 2k and it's slow getting to that! There are two types of EGR valves; a vacuum-operated and an electronically controlled EGR valve. Following this (2 days later) the cam belt and water pump went, had this work done but then realised the van began to drive sluggish dropping into limp mode and coil light would come on and also the speedo would stop working.. this would happen for a while then here and there it would kick back in to full power and light would go out and speedo would start working again. The vacuum is often regulated by a computer-controlled solenoid. Renault 1.5 dci egr valve problem. This article explores the life and legacy of former NASCAR driver, Dale Earnhardt. Clean with a needle or small drill bit. Use brake cleaner or a similar solvent cleaner. But now have the orange light on and fault saying turbo pres sensor fault and the van has no go in her at all till 2300rpm. This means the amount of hydrocarbon gases emitted from the tailpipe increases significantly producing a fuel smell. Thanks for reading this and your article seems very informative even if I don't have a clue what it means! Blanking the EGR valve off actually brings the engine temperature up quicker as the combustion intake is now 'pure' and not contaminated. I’ve just joined this eve. Had this fault on my Vivaro 2002 and it was the fuel line letting air in. Anyway I've cleaned out the egr valve with decarb spray and put back on the van the correct way up and now the van is driving like it should. Rain Defence (author) from UK on September 01, 2014: The concept is the same even though the layout is a bit different. I particularly want to pull the old MAF sensor apart and have a look at its electronics, particularly to see if the fine wire mesh is connected electronically to the sensor wires. 2. How to remove the EGR valve renault trafic (2005 1.9 TD 74KW). SORRY for my English. no lights illuminated on dash. I understand that the MAF can be replaced by a diode on the plug. They are supposed to only be open in certain circumstances and are controlled by the engine management system. Two ports are the same size but one port has a tiny less than 1mm hole in it. I know the out holes Line up but does the inner bottom hole line up. After a couple of minutes I am able to rev the engine. I made sure the wastegate was ok by connecting a tube and sucking on it, it should more with out too much effort. I would say though that separating the valve was quite tough, however. i changed air mass valve . It keeps misfiring in the morning especially and when im high reving in 1st and 2nd gear mostly do you think blocking the egr valve will stop this from happening? Knocking noises from the engine can be caused if the EGR is constantly closed. I have written another guide on how to change the MAF sensor. There are several options available to you when it comes to the EGR valve. Renault Trafic P0409 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. - most come about because the valve itself gets stuck open or closed due to build-up of soot particulates, carbon deposits and a sticky tar-like substance. I did have problem whit EGR valve, my van Renault master dci100 2.5l, 2005 year, problems no power up to 2500 rev, I changed EGR valve, still same problem, then I just unplugged cables from EGR valve, simple and it works, I believe no wan say anything about electric fault, this is the 5v power supply from ECU, I attached link from yotube how to test and fix the problem, it is easy, and I hope it helps to most of cases, you can try this be for you go to any garage and start changing any parts. Here's how to unlock your Nissan Micra when the battery dies. Increased fuel consumption is caused when the valve is constantly open. For payment, of course. sorry have a nissan primaster 1.9, Great post and very informative... changed/cleaned a lot of EGR valves, but can't find mine on a renault trafic 08 plate?. this might be a very useful information on Renault 1.9 dci F9Q engine fitted to a lot of cars throughout the range I have had a problem with my scenic electrical fault /glow plug light coming on now and again even when cruising at 30/40/50/60 any speed really if I hit a bit of a hill slight incline the glow plug fault light would come on by taking my foot of the accelerator the light would go out so by following your great advise by blanking off the egr valve semi fixed this but didn't cure it I have finally found the fault. Poor performance can be caused when the valve is open or closed. Too hard to say by just reading but at least you can rule those two things out if you do them. When I start my Renault Trafic it does start but idles for a while and I am unable to rev the engine. 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