Rennlist

Water Pump Noise?

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHWater Pump Noise?

Leading reported evidence

Replace idler pulley prior

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.

Performed · outcome unconfirmed
I also replaced the idler pulley prior to the pump melt down thinking that was the problem.
Original post Read captured discussion
Water Pump Noise?

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Leading evidence: 'Replace idler pulley prior' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace idler pulley prior' (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.

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1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Replace idlers and the water pump

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed
I replaced all the idlers and the water pump on my 2000 when I owned it.
Original post Read captured discussion
Water Pump Noise?

Replace their pumps

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed
I've since spoken with a number of 996ers that have replaced their pumps.
Original post Read captured discussion
Water Pump Noise?

Run .......i'm keeping a watchful eye

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
At 87k miles and running.......I'm keeping a watchful eye on my water pump.
Original post Read captured discussion
Water Pump Noise?

Frequently discussed actions (4)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace idler pulley prior

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed
I also replaced the idler pulley prior to the pump melt down thinking that was the problem.
Original post Read captured discussion
Water Pump Noise?

Replace idlers and the water pump

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed
I replaced all the idlers and the water pump on my 2000 when I owned it.
Original post Read captured discussion
Water Pump Noise?

Replace their pumps

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed
I've since spoken with a number of 996ers that have replaced their pumps.
Original post Read captured discussion
Water Pump Noise?

Run .......i'm keeping a watchful eye

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
At 87k miles and running.......I'm keeping a watchful eye on my water pump.
Original post Read captured discussion
Water Pump Noise?

Coverage and how to read this overview

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.

6 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: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

My car (2000 C4) has been making a constant noise in the past few days. Sounds like a bad water pump noise (bearing noise - ice cubes on slow in blender sound). Called dealer and they said that would be very rare for that car, 994 yes, 996 no. Service scheduled for next Wednesday. What else could that noise be?

POST 2Original post

The sound you described could be the water pump or one of the idler pulleys is crapping out. I replaced all the idlers and the water pump on my 2000 when I owned it.

POST 3Original post

Very rare my butt. Changed out the water pump on my 99 996 this winter and the impeller was about half there. The imbalance of the impeller screws the bearing (this the noise) and you'll start to see a small leak of coolant, that gradually gets worse until complete failure. Ask me how I know.... I've since spoken with a number of 996ers that have replaced their pumps. I replaced mine with one that has the metal impeller and its working perfectly. I also replaced the idler pulley prior to the pump melt down thinking that was the problem. Not a big deal, but I am surprised by your dealers response.

POST 4Original post

Not rare, my 99 996 water pump went out at 65k same noise you described, and have heard many others who have had the water pump fail in their 996 about the same miles or less. I was able to verify by removing the belt and turned and shook each of the pulley by hand and indeed was the water pump. There were play (side to side) movement on the water pump pulley.

POST 5Original post

At 87k miles and running.......I'm keeping a watchful eye on my water pump. I thought it should be about that time, could be anytime now.

POST 6Original post

does the water pump on MKII cars fail similarly?

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