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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW B5 Passat TDIs

VW B5 Passat TDIs This is a general discussion about B5 Passat(>98 (2004-2005 in North America)). Non TDI related postings will be moved or removed.

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Old May 28th, 2019, 06:57   #1
Diesel lifer
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Location: Jacksonville FL
Default 2005 B% chirping

My Passat has developed a chirp from the front of the engine, particularly at idle when I turn the steering wheel. It largely goes away above idle speeds.
Research here says the alternator and cooling fan may be to blame here.
The serpentine belt has about 45k on it. Same for the timing belt.
In the event I need to replace the fan and its clutch, do I need to put the front of the car in the maintenance position?
How do I diagnose a bad 1) alternator, 2) fan/clutch, 3) power steering pump?
If the problem is the alternator or the fan, should I replace the power steering pump at the same time?
I haven't replaced the power steering fluid recently.
Thanks
Jeff
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Old May 28th, 2019, 07:23   #2
QuickTD
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The problem is not the alternator itself, but the one way clutch pulley. It is available as a separate part. The alternator can be removed to service the pulley without putting the car in service position. I get the fan out of the way by removing the single allen bolt that threads into the fan hub from the rear. An 8mm allen bit, a small (3/8) impact, a short extension and a swivel are required. The impact allows bolt removal/replacement without counter-holding the fan. I just leave the fan in bottom of the shroud, no need to remove it completely. A special tool is required to remove the pulley, available from any of the usual vendors here.
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Old May 30th, 2019, 11:15   #3
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Thanks loads for the tips. I have found the pulley at my mail order dealer for about $132, and at Parts Geek for $32 (INA model). Is there any reason to shun the INA model?
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Old May 30th, 2019, 17:37   #4
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Quote:
Originally Posted by Diesel lifer View Post
Thanks loads for the tips. I have found the pulley at my mail order dealer for about $132, and at Parts Geek for $32 (INA model). Is there any reason to shun the INA model?
INA is a very reputable bearing manufacturer. I would not hesitate to buy an INA product.
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Old July 6th, 2019, 10:11   #5
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Late reply but thanks for the tips on replacing the alternator pulley. I used a strap wrench and the fan came right off. The pulley was a little obstinate, but it came off and the new one was installed and torqued. I read in a few discussions that the pulley is left hand thread but in this case it is not. The alternator is returned and the fan attached, and all is well.
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Old July 6th, 2019, 14:21   #6
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Quote:
Originally Posted by Diesel lifer View Post
Thanks loads for the tips. I have found the pulley at my mail order dealer for about $132, and at Parts Geek for $32 (INA model). Is there any reason to shun the INA model?
INA is likely the OE manufacturer for this...
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Old July 6th, 2019, 18:20   #7
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It’s probably the Overun alternator pulley. I just replaced mine due to this. Of course it was the last thing I replaced after doing the rest of the drivebelt system.
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Old July 7th, 2019, 08:34   #8
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The correct fix is always the last thing that gets done. It’s like looking for something lost. It’s always in the last place you look.
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