Question about 2003 Volkswagen Jetta TDI

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2003 tdi automatic transmission seems to be not shifting properly

We use biodiesel and have been running b99 consistently since 2003. That (I hope) is not the issue but I suppose it could be the fuel filter since the engine does feel like it is not getting fuel/ power. It happens mostly going up hills. Gets to 3500 rpms and seems to rev there too long before shifting...which it eventually does but it sounds like it is straining.

We need to travel 150 miles - we're on the last 3rd of a road trip, gone about 240 miles so far - and well be on the road tomorrow. Seem like we'll make it home and then I will schedule with my tdi specialist.

Any thoughts? Thank you for your time!

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  • dtmos Sep 09, 2008

    The problem seems to be kind of low - key. No check engine lights. Nothing done to the car. No new stations. Seems like turbo tries to kick in but can't. I have no idea about the vacuum lines.



    Thanks for responding!

  • DC-Guy May 11, 2010

    You put most of your question in the title and I can't view it all. Is this a sudden problem or has it been slowly getting worse? Are there any check engine lights on? Did you do anything to the car right before this started to happen? Did you fill up at a different station? You may be onto something with the fuel filter and might want to just switch it out. Most people that use bio-D keep an extra fuel filter with them just in case they gell up or get clogged with other gunk. Can you hear the turbo kicking in still? What kind of shape are you vacuum lines in?

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It will not be a clogged intake if you have been using b99 since 03. But it very well could be the fuel filter or the injectors. People that drive these cars, including me, carry a spare fuel filter. this is not dependent on using Bio. When these filters clog power loss comes on suddenly and with out warning. The use of strictly b99 can cause problems with the injectors over a long period. Pitting in the injector causes an inconsistent steam of fuel.

If it was my car, first thing I would do is change the fuel filter and run 2 cans of diesel purge through the engine it. It is very good stuff.
Note:this does not go in the gas tank or through the filter.

Posted on Jan 09, 2009

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I'm going to guess you have a clogged intake. See this site: http://buncombe.main.nc.us/~emaglott/pp022/index.htm

You can clean it yourself by removing the intake and powerwashing it out. If a dealer does it they will way overcharge you. You might need a new EGR valve too since that might be clogged up too. There are a lot of tutorials on the web and it isn't that bad of a job. Just make sure you wear gloves.

Posted on Sep 10, 2008

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tdisline_432.jpg



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