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Discussion summary
YOUR RESEARCHHelp with water pump DIY-suggestions
Leading reported evidence
Use prestone extended life 50/50
Performed · outcome unconfirmed
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0
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1
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Performed · outcome unconfirmed · Original poster
I decided to buy a remanufactured WP from AutoZone and I am using Prestone Extended Life 50/50.
Leading evidence: 'Use prestone extended life 50/50' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is '3-4 hour diy job' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace wp' (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.
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Suspected cause · Original poster
Time-wise, if you have the right tools and all goes well this is probably a 3-4 hour DIY job.
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Suggestion · Original poster
After reading some of the recent water pump posts I decided to replace my WP on my '99 C4 90K miles as preventative maintenance.
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Suggestion
You should not need any sealant, if properly seated and tightened the gasket will seal.
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.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T072535Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
After reading some of the recent water pump posts I decided to replace my WP on my '99 C4 90K miles as preventative maintenance. There were no issues with the WP. 1st off I wish I had not. The WP I pulled was the orginal and was turning smoothly and showed no wear. I decided to buy a remanufactured WP from AutoZone and I am using Prestone Extended Life 50/50. The WP was a Porsche OEM part and has the Porsche part number on it. Prestone claims the coolant is compataible with everything.
The WP replacement is not all that hard, watch the 8 minute movie (that guy is a Porsche DIY superstar, hats off to you sir) but there is one little dirty secret that I have not seen mentioned. The #3 bolt (starting at top and going clockwise) is a biiiich to get to.
DOES ANYONE HAVE A SUGGESTION AS TO WHAT TOOL I SHOULD USE TO TIGHTEN THAT BOLT??????
I decided not to use any goo (gasket sealant) and after I put everything back together it leaked like a sieve. Tomorrow I start the whole thing over and will use some goo.
Time-wise, if you have the right tools and all goes well this is probably a 3-4 hour DIY job. I spent 8 hrs. getting it wrong but that includeded a trip to McDonalds and to Autozone to find a tool for #3 bolt and lots of time on my creeper looking up and listening to the XM GD 24/7 channel.
Thanks,
You should not need any sealant, if properly seated and tightened the gasket will seal. It is a difficult job unless you take out the engine carrier for better access. I did mine when the engine was out of the car and the carrier was off. Very easy access to all the bolts then. To remove the carrier you have to temporarily support the engine from underneath.
I used sealent. Being I didnt have a torque wrech that woudl go as low as needed and I was pulling down "by feel and experiance", Mine doesnt leak, its been 300 miles.... See my post and the video in it.
The post is "when water pumps attack"
