![]() I would get it into a shop ASAP as problems never get better on their own and you really don’t wanna kill that powerplant. I work on plenty old VW diesel engines but I have to admit outside of some oil changes and diesel purge haven’t delt with anything major on one of the new ones from the last 5-6 years. Without being there to probe and check its tough to stab at it on the internet unless you can find something of a following for the same year and engine with that same issue. The good news is that if you have a VagComm scanner you will always find people on craigslist offering to pay someone to scan their car for them. Some scanners say they do all cars but believe be without Vag-Comm software it wont understand a VW computer. The next thing to bring up is your scanner. They also have glow plugs with a cylinder pressure sensor in them to meter a bad ignition, so you can see how complex they are compared to the old 1.6 Diesels that came in Rabbits and Golfs. Because of its electronic controlled injection you have sensors similar to a gasoline engine at work, a very high pressure common fuel rail, a low pressure pump in the tank, and a very very high pressure pump up front. Basicaly they built that motor with the intention of it passing California Emissions. It was their first go at a very electronic controlled diesel engine for improved power and emissions rating. The engine in that car is a good one! But there is a lot going on. I would try the dealer first and then go to the second option only because it could be a warranty issue. If not take it to a shop in your area that’s got a good reputation working with VW/German cars, in particular the diesel ones. Is your gal the original owner? If so take it to the nearest big VW dealer. I tried to reply last night and earlier this morning with my phone but it was experiencing some Samsung difficulties.įirst things first, 35000 miles is really low for anything major to happen. I saw that some mentioned problems such as water in the intercooler, or fuel pressure or fuel filter issues, so would those be good places to try and start to look? I’m not sure that these would be the issue, because I wouldn’t think that these would disappear by turning the car off and on again, but if its a place to start, then I’m happy to check it out. Once the car is resets, it sees everything as normal once again, and performs just as it always did, until another instant occurs. If I were to do that, then the problem would just disappear again.īased on what experience I have with things like this, which isn’t too extensive, it sounds like a sensor is “freaking out” for an instant, perhaps due to some event. It’s one of those problems that just hides away until the most inconvenient time, such as last week when she was going home on 95, and had to pull over on the left side, which made merging a terrible experience for her.Īs far as trying to pull the code as soon as it has the issue, will my reader be able to read it without me shutting off the car? I thought that you had to turn the car off and then plug the reader in. It’s making me crazy how the issues are so diverse, and how it’s been difficult to find a place to start the troubleshooting process. It sounds crazy to me that it wouldn’t even save them, especially with the severity that comes along with some of the issues that the glow plug light could be indicating. When I try to pull up the codes, my reader says that there are none, and there aren’t any saved on the computer either. ![]() ![]() The car is a 2010, and has about 35000 miles on it. ![]() Thanks everyone for all the great info so far. I will have a deeper look at this… i would also advise checking this and i will look at some stuff some more. Its also possible that the engine is opening the waste gate of the turbo, i am almost sure your engine is turbocharged, when that wastegate opens you loose boost, you loose power, your car decelerates in some diesel trucks this is a form of governing! Low fuel pressure will cause drivability issues as fuel pressure is ultra crucial for dieselsįuel injectors not atomizing fuel correctly can cause major issues because if the diesel isn’t atomized correctly it will not burn.Ĭompression for a diesel engine is ultra important because it uses compression too ignite the fuel as it is injected low compression wont inject fuel but this would cause un burnt fuel too come out the tail pipe and cause a miss i am sure in one of the cylinders especially when cold.Įngine reaching operational temp is very crucial for diesel because the air in the combustion chambers need too get hot enough too make the diesel burn, low engine temps can cause drivability concerns. With a diesel engine there is one major difference between a gas engine, it requires compression too ignite the air fuel mixture rather than a spark, fuel is injected into the hot compressed air and burns expanding pressing down the piston.
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