17 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHReplacing The Pulley System
Leading reported evidence
Replace water pump
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Leading evidence: 'Replace water pump' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'accessory drive' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check any play' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
This might be due to a mis-aligned accessory drive but more likely it is due to an accessory drive that has excessiive bearing play at its shaft.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion
Then give each accessory drive pulley a check for any play.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Check idler roller bearings and tensioner roller bearing
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Also, check all the idler roller bearings and tensioner roller bearing for any play or roughness.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T120458Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi guys,
Where could i find replacement pulley systems for my 996? Feel like replacing all the pulleys and bearings etc ... they're giving funny sounds.
The only pulley, I have heard which requires replacement, that makes noise is the idler/tensioner pulley or alternator. What kind of noise is your car making?
The pulleys shouldn't make any noise, unless the belt is rubbing against one side of one or more of the accessory drive pulleys and it would only do this if the belt were not tracking properly.
This might be due to a mis-aligned accessory drive but more likely it is due to an accessory drive that has excessiive bearing play at its shaft.
And most often if this is the case the water pump is the accessory drive.
Check the belt for any sharp edges. The belt edges (compare to a new belt) should be rather blunt.
If you find an edge that is sharp (or sharper than the other edge) that's sign the belt's rubbing.
Note the direction of belt rotation and the routing and remove the belt.
Then give each accessory drive pulley a check for any play. The play may not be much. But you have several various drives to check and you should spot the one with any play. The one with any play is the one that has to be suspected of causing the noise.
Also, check all the idler roller bearings and tensioner roller bearing for any play or roughness.
Every car is different in this area. For example my 02 Boxster with over 241K miles is on its original belt idler rollers and tensioner but a failing water pump developed a noise and a bit of play gave me the clue. The water pump was replaced.
My 03 Turbo developed a 'dry bearing' noise at around 35K miles and the uppermost idler roller bearing was found to be bad.
Sincerely,
Macster.
I don't think the pulleys are sold separately. They are not wear items. But give a look at Suncoast's web site to see if it lists these items separately.
The idler roller/tensioner roller bearings are avaiable separately. I do not have the numbers handy but Suncoast may have them listed on its web site.
Or you can take your car's VIN to your local Porsche parts department and have the parts department look up the part numbers for you, if they exist.
Sincerely,
Macster.
If you are inventive (or poor) you can replace the bearings in the rollers - both the 2 guide rollers and the tensioning roller have the same bearing. Cost was less the $20 each bearing....
Learn something new every day. Thanks.
Added: Wait a minute. As best I can tell those part numbers are for the idler/tensioner rollers. These are for sale separately. I bought a full set for my Boxster shortly after I bought the car in 02. I still have all the new parts in the front trunk, unused. The original rollers have held up rather well, over these last 242K miles. (The 03 Turbo did need a new idler roller though at 35K miles.)
I do not find the accessory drive pulleys list separately though.
But Pelican Parts or Suncoast or even (God forbid though anyone here ever visited one....) the local dealer parts department should turn up a part number for these parts if they are available separately.
Though why the OP needs new ones is beyond me.
Sincerely,
Macster.
can someone please help me. How many rollers/pulleys are there on a tiptronic? 2 deflection rollers and 1 tension roller am i right? Is there a difference between manual and tiptronic pulley system?
Cheers
A couple of suggestions that I hope will save you a lot of future pain:
1) If it ain't broke, don't fix it. More often than not you'll end up breaking something in the process that does require repairing, especially on these cars. Unless you have some noise, free play, or grinding coming from the pulleys I wouldn't start taking them off and trying to replace them.
2) Instead of asking how many rollers and pulleys there are on different models, go out and look at your car and count them up. I wouldn't start ordering parts until you can look at a diagram and match them up with your car so ensure you get the parts you need. Listening to second hand sources can be easier, but it's a lot less reliable than confirming things for yourself. If you end up with the wrong parts there's only one person to blame...
-Shawn
