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First time posting, logging in to gain access to Part 2 of timing belt change out procedure for a 2004 Passat TDI 2.0 Liter.
Is there a inspection procedure for the chain driven oil pump?
 

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The oilpump is a part of the balanceshaft module and you must drop the oilpan to see both. Have you replace the balance shaft module yet they usually go bad between 70,000 and 125,000 miles?
 

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The oilpump is a part of the balanceshaft module and you must drop the oilpan to see both. Have you replace the balance shaft module yet they usually go bad between 70,000 and 125,000 miles?
I won't argue that this is the case but they can last longer and my local VW mechanics, who probably see very few passat tdi's, have never seen issues with these. Mine has 155k and afaik is still working good, I have some noise that I think is from tired timing belt accessories but I'm not positive that it isn't the chain. I wonder if the quality in parts varies or if inferior oil is used if it causes and early demise like the camshaft wear issues.. I'm seeing if I can find someone locally who is familiar with the BHWs.
 

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vw passat timing belt (1st post)

I just purchased a 2004 vw passat with 104k miles. The serpentine belts were replaced at 87k. How important is replacing the timing belts at 105k? How much is the total of this procedure likely to be and should I have it done by a certified VW mechanic/dealer?
 

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I just purchased a 2004 vw passat with 104k miles. The serpentine belts were replaced at 87k. How important is replacing the timing belts at 105k? How much is the total of this procedure likely to be and should I have it done by a certified VW mechanic/dealer?
Replace it ASAP, it's already well past due. The timing belt is a separate belt than the serp belt.

If the tech follows the instructions they can be certified insane for all it matters. If they don't follow the instructions and think they know better, the car will not run right.

FYI, read the B5 buying guide, the oil pump mod should also be done w/timing belt if you don't want it to fail. It's a very common problem.
 

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I won't argue that this is the case but they can last longer and my local VW mechanics, who probably see very few passat tdi's, have never seen issues with these. Mine has 155k and afaik is still working good, I have some noise that I think is from tired timing belt accessories but I'm not positive that it isn't the chain. I wonder if the quality in parts varies or if inferior oil is used if it causes and early demise like the camshaft wear issues.. I'm seeing if I can find someone locally who is familiar with the BHWs.
My 2005 Passat BHW has 271,000km (168,000 miles) and the chain just recently went on it. I'm not yet sure what caused it (hex shaft ceased or chain/tensioner wore out or broke) as I have yet to pull it apart, hopefully in the next 2 weeks. I have always used VW spec oil, changed every 10,000km since I've owned it. If you're hearing "some noise" that doesn't seem normal then it's probably the chain/tensioner assembly giving you forewarning of the inevitable. The "timing belt accessories" don't make any noise at all, at least nothing that sounds like a rattle or marbles in a blender. If your timing belt is "tired" enough then it would just break, bend your valves and your engine stops running. There is no forewarning (other than mileage) for this to occur.

Using non VW spec oil will speed up the demise of critical engine components on TDIs especially. Regardless, these VWs are known to have low quality cams in them from the factory that will need replacing at some point in time.

Just because one VW shop/dealer doesn't see BHWs with issues very often doesn't mean they don't have issues. I have owned mine for over 4 years and I have taken care of it but what is known to fail on these vehicles is what I am, or have been, faced with.

Just thought I'd share my $0.02 (CAD). :)
 
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