Pelican Parts

2005 996 C4S questions... one more

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YOUR RESEARCH2005 996 C4S questions... one more

Leading reported evidence

Install 3rd radiator

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Performed · outcome unconfirmed
I also installed the 3rd radiator and after both of those changes my engine has run noticeably cooler while still warming up generally just as fast as before and still easily getting up to full operating temp everytime I drive it.
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2005 996 C4S questions... one more

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Leading evidence: 'Install 3rd radiator' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install 3rd radiator' (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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Repair porsche 996 engine repairs, porsche engine problems

Suggestion or failed attempt

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Suggestion
Hartech | Porsche boxster engine repairs, Porsche engine repair, Porsche 996 engine repairs, Porsche engine problems
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2005 996 C4S questions... one more

Replace drive belt

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Suggestion
BTW, unless it was recently done then you prolly want to change the drive belt when you do the water pump and thermostat because it has to be removed anyway.
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2005 996 C4S questions... one more

Replace engine has

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Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
I also installed the 3rd radiator and after both of those changes my engine has run noticeably cooler while still warming up generally just as fast as before and still easily getting up to full operating temp everytime I drive it.
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2005 996 C4S questions... one more

Replace regardless of condition due

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Suggestion · Original poster
Drive belt...yeah I was going to change regardless of condition due to water pump failure and possible stress from that.
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2005 996 C4S questions... one more

Frequently discussed actions (7)

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Install 3rd radiator

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed
I also installed the 3rd radiator and after both of those changes my engine has run noticeably cooler while still warming up generally just as fast as before and still easily getting up to full operating temp everytime I drive it.
Original post Read captured discussion
2005 996 C4S questions... one more

Repair porsche 996 engine repairs, porsche engine problems

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
Hartech | Porsche boxster engine repairs, Porsche engine repair, Porsche 996 engine repairs, Porsche engine problems
Original post Read captured discussion
2005 996 C4S questions... one more

Replace drive belt

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.

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Suggestion
BTW, unless it was recently done then you prolly want to change the drive belt when you do the water pump and thermostat because it has to be removed anyway.
Original post Read captured discussion
2005 996 C4S questions... one more

Replace engine has

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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
I also installed the 3rd radiator and after both of those changes my engine has run noticeably cooler while still warming up generally just as fast as before and still easily getting up to full operating temp everytime I drive it.
Original post Read captured discussion
2005 996 C4S questions... one more

Replace regardless of condition due

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 · Original poster
Drive belt...yeah I was going to change regardless of condition due to water pump failure and possible stress from that.
Original post Read captured discussion
2005 996 C4S questions... one more

Replace water pump (with oem pump)

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Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
Some people will advise you to stick with the stock 186 deg, personally I would go with the 160 deg thermostat and that's what I did on my car when I replaced the water pump (with OEM pump).
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2005 996 C4S questions... one more

Run right now

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Suggestion · Original poster
Maybe it is rare I would just like to keep it running right now!
Original post Read captured discussion
2005 996 C4S questions... one more

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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.

Pelican Parts: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

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Generation: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Forgot to ask: 160 deg. or 186 deg. thermostat? I think it already has the 160 based on observed temp. on gauge. Thanks, again.

POST 2Original post

Some people will advise you to stick with the stock 186 deg, personally I would go with the 160 deg thermostat and that's what I did on my car when I replaced the water pump (with OEM pump). I also installed the 3rd radiator and after both of those changes my engine has run noticeably cooler while still warming up generally just as fast as before and still easily getting up to full operating temp everytime I drive it. Hartech has a good writeup on why a low temp thermostat is a good idea, among other things... read PART 5 of their buyers guide here: Hartech | Porsche boxster engine repairs, Porsche engine repair, Porsche 996 engine repairs, Porsche engine problems BTW, you have an 2005 99 6 ?

POST 3 / ORIGINAL POSTEROriginal post

Yes, 2005 996 911 C4S. As I understand 2005 was the switch-over year for the 911 from 996 to 997. Read somewhere that there 4012 996's made for the shortened run in 2005. Just what I read! I am no expert by any means. Think I'll go with the 160. Thanks for the info.

POST 4Original post

Ah I see, in 2005 the C4S was only built as a 996. Interesting. Rare model to have. Enjoy it! BTW, unless it was recently done then you prolly want to change the drive belt when you do the water pump and thermostat because it has to be removed anyway.

POST 5 / ORIGINAL POSTEROriginal post

Again, certainly no expert here but I believe the C4S continued in the 997 form beginning sometime in 2005 and beyond. Not sure how many C4S were built in 2005 as 996's. Maybe it is rare I would just like to keep it running right now! Drive belt...yeah I was going to change regardless of condition due to water pump failure and possible stress from that. Thanks for suggestions

POST 6Original post

Quotes source post: 8240112

I totally agree on that Hartech article being a very informative read.

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