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Moved to correct subforum.

First, is your car under warranty or does it have an extended warranty? They MAY cover the glow plugs. Glow plugs are wear items but if your dealer is nice, they might do it.

^^^ What he said. Here is the part you need: http://www.tdiparts.com/catalog/product_info.php?products_id=607 They don't make cermaic glow plugs anymore, all replacement glow plugs are steel because ceramics can break off and cause damage. The glow plugs are steel.

$150 is an average price for a reflash to use steel glow plugs. This is because they use a different voltage. The only other option is to have someone flash your car with a performance chip and do the voltage change for you at the same time. That will cost twice as much but you'll get some more performance out of the car. Make sure they include the voltage change for steel glow plugs. Some guys who can do it are listed here:
http://www.myturbodiesel.com/1000q/basicpowermods.htm

The oil pump upgrade that Fluid mentions is not going to be covered under warranty. The problem is that it wears down, gets noisy, then breaks. It can happen on low mileage cars, it can happen on high mileage cars. This part was only found on the US on the 2004-2005 Passat and it was later fixed on Euro market cars by switching to a gear drive instead of chain drive. The risk of not switching is severe engine damage. Sorry to be the one to tell you. VW won't cover it because there are only a few people in the US who own these rare 2004-2005 Passat TDI.

The total cost of labor+parts is about $3000. Parts can be purchased here: http://worldimpex.com/parts/genuine-part-bhw-module-repair-kit-passat-bhw_935619.html A VW expert who does these can be contacted here: http://www.cardocautomotive.com/ Most dealers will not be familiar with this problem or the solution or the repair since it's a rare car.

Ceramic glow plug part number:N 105 916 07
The car's computer (ECM/ECU) will be 038 997 016N software version #1388 or higher
Here is the TSB regarding it: www.myturbodiesel.com/d2/images/pdf/ceramicglowplug.pdf
 

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No, do NOT put them in since it will they are different voltages. You MUST have the ECU flashed as stated in the TSB to change the computer's voltage to the glow plugs. Feel free to buy them and then go to the dealer for the flash since you won't have to pay the dealer markup on parts. But do not put them in.

Yes, the B5.5 had a few small changes. All TDI are 5.5 models. B5 means the 5th gen passat body although the platform is based off the audi a4. That's part of why it has a longitudinal engine and that excellent multi link front suspension. However, it does make suspension refreshing quite expensive since the bushings are replaced as part of new links.

Here are more details on what was the 5.5 http://en.wikipedia.org/wiki/Volkswagen_Passat#Mid-2001_facelift_.28B5.5.29
 

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So I can put the new ones in and drive it? I just have to leave the wires off? More than likely I will just throw it on my friends flatbed and haul it up there after the new ones are installed and have them flash it. I just wanted to see if there was a way around having them do it all and also having to arrange a tow. I know you don't need the plugs to start the car in warmer weather so it would make sense to be able to drive it up after the install with no problems.
Whoops, yes, you can put the new ones in and drive it but do not connect them. And do use PB Blaster a few times and let it soak into the glow plug threads before you try to remove them. The ceramic glow plug has been known to break off and damage a cylinder by falling inside. Using PB Blaster will reduce the stress on it by penetrating into the threads,eating any corrosion and lubing the threads.

You'll get error codes but just make sure the dealer clears them out when they flash the ECU.
 
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