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Need help- potential purchase 01 Aero C4

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YOUR RESEARCHNeed help- potential purchase 01 Aero C4

Leading reported evidence

Replace battery and it never came back

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 · Original poster

However, seller noted that dealership cleared ABS/PSM and replaced battery and it never came back.

Need help- potential purchase 01 Aero C4
Frequently discussed work

Check aos/water pump/ims issues

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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

As stated above - check the AOS/water pump/IMS issues.

Need help- potential purchase 01 Aero C4
Read full discussion summary

Leading evidence: 'Replace battery and it never came back' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check aos/water pump/ims issues' (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 · 27 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace knowing how it's been cared

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

Knowing how it's been cared for and what has been replaced is huge.

Need help- potential purchase 01 Aero C4

Check aos/water pump/ims issues

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

As stated above - check the AOS/water pump/IMS issues.

Need help- potential purchase 01 Aero C4

Recommend by some

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

It's recommended by some that you change the AOS and water pump every 3 years, the IMS retrofit every 5, and you need to know if the RMS has been done.

Need help- potential purchase 01 Aero C4

Repair sand also determine extent of chain housing oil leak/etc

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

- a good PPI will determine quality of repair sand also determine extent of chain housing oil leak/etc.

Need help- potential purchase 01 Aero C4
Frequently discussed actions (10)

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

Check aos/water pump/ims issues

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

As stated above - check the AOS/water pump/IMS issues.

Need help- potential purchase 01 Aero C4

Recommend by some

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

It's recommended by some that you change the AOS and water pump every 3 years, the IMS retrofit every 5, and you need to know if the RMS has been done.

Need help- potential purchase 01 Aero C4

Repair sand also determine extent of chain housing oil leak/etc

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

- a good PPI will determine quality of repair sand also determine extent of chain housing oil leak/etc.

Need help- potential purchase 01 Aero C4

Replace battery and it never came back

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 · Original poster

However, seller noted that dealership cleared ABS/PSM and replaced battery and it never came back.

Need help- potential purchase 01 Aero C4

Replace front bumper/etc

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

accident damage is important to acknowledge - some guys throw the aero-kit on the car when accidents happen to replace front bumper/etc.

Need help- potential purchase 01 Aero C4

Replace knowing how it's been cared

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

Knowing how it's been cared for and what has been replaced is huge.

Need help- potential purchase 01 Aero C4

Replace look

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

I would make sure you PPI included cam deviations, oil change look for metallic material, borescope the cylinders and drop the sump.

Need help- potential purchase 01 Aero C4

Test drive

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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

I didn't see it while test drive.

Need help- potential purchase 01 Aero C4

Test drive the vehicle this afternoon

No successful repair reported for this finding.

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Reported fixes
0
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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

Had a chance to test drive the vehicle this afternoon.

Need help- potential purchase 01 Aero C4

Test drove this car and decided

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

I test drove this car and decided to buy a different 911.

Need help- potential purchase 01 Aero C4
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.

27 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: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hey guys. Been a long-time searcher on rennlist, but needed some direction on a potential acquisition. Vehicle: 2001 911 C4 Aero Mileage: 51,000 Asking: $22,000 Had a chance to test drive the vehicle this afternoon. Felt very good. No anomalies in driving sensation. Anyways, had some basic questions if you can help. 1.) Vehicle came with a PPI from March 2016 from a Porsche dealership. Do all dealerships do a over-rev analysis? The seller did not have this and noted it never came with it. That seemed odd to me. I plan to contact dealership tomorrow to see. 2.) PPI noted chain case seepage. However, I couldn't note anything as the seller had powerwashed the engine and underbody (suspicious to me). I gave it some heavy foot and oil pressure held at 5 barr and returned back to 3. Seemed normal. 3.) PPI noted PSM off and ABS light on while driving. However, seller noted that dealership cleared ABS/PSM and replaced battery and it never came back. I didn't see it while test drive. 4.) Accident. Car had an accident, no salvage in title, however there is impact damage on the L/R undershield and it was noted in Carfax. Unfortunately, this is the 4th owner and accident occurred with 1st owner and there are no records on hand other than PPI and Carfax. With all that said, it's a pretty car, right options, felt strong. I'm curious to hear about your thoughts on the price point or anything I mentioned that would make you walk away. I'm still learning about the 996. Was thinking of a TT, but this price point is pretty convincing. I plan to do a PPI unless you suggest me otherwise. Thanks!

POST 2Original post

It's really important to find a car that you can get a maintenance history on. Knowing how it's been cared for and what has been replaced is huge. It's recommended by some that you change the AOS and water pump every 3 years, the IMS retrofit every 5, and you need to know if the RMS has been done. You can easily spend 5k right off the bat (unless you are doing the work yourself) just to get the basics up to date. It's all a matter of odds but these cars can cost a whole lot of money to service and maintain so the more info you have going in, the more you reduce your risk. Also, make sure you want a C4. It's all preference but the c2 is a little lighter and I personally like the way it handles a little better. There is a speed yellow '01 C2 with an FSI rebuild (best money can buy) lurking around here thinking about selling. It's a little more money but by the time you do all of the maintenance on this one you will be money ahead. Here's a link. Price is in CDN: https://rennlist.com/forums/996-foru...l#post13175398

POST 3Original post

Research research research Yes to the PPI Ignore the accident, if it happened with the first owner and no problems and the mechanic checks it out, no worries As stated above - check the AOS/water pump/IMS issues. If not done, no big deal, but you will hace to pay eventually to have them done/addressed. Spend more time here asking questions and looking. None of these cars are rare. And if you do not do your homework it can get expensive quick.

POST 4Original post

What color is it? What options does it have? Are they the ones you've been looking for? That could play a part in the decision too.

POST 5Original post

The aerokit is quite desirable. C4 not so much unless you plan on DD in winter conditions. The C4 can be converted to a C2 fairly easily though. I wouldn't worry too much about the accident either but I would recommend getting your own thorough PPI and I'd be prepared for some cash outlay for maintenance. Any pics? Options?

POST 6Original post

That's a bit more than I recently paid for a 99 C4 (non-Aero) with similar mileage. I think the price difference probably is accounted for by the Aerokit. When was the last clutch replacement? Basically, clutch/IMS/RMS/AOS will cost like $4,000 to do all together, but addresses most of the big picture issues in one go.

POST 7Original post

Quotes source posts: 13208014, 13208216

You do know that the C4 has the a stiffer chassis since it shares its tub with the GT3 right? If you want to build a serious track car, the C4 is the better base (and then removing the AWD bits. Actually the AWD is geared towards performance and cornering rather than adverse conditions, but it is a little beast in off color weather.

POST 8Original post

My buddy is also interesting in that car, but I think he lost interest because of the lack of response from the guys selling the car. Here is the thread I started the other day about the engine just being way too clean: https://rennlist.com/forums/996-foru...-thoughts.html I would make sure you PPI included cam deviations, oil change look for metallic material, borescope the cylinders and drop the sump. If it passes those inspections, I would jump on that car due to the options and mods that the previous owners had done if the body looks good. FYI, the asking price on craigslist for the car is $20K, I don't know where you get the $22K. Best of luck!

POST 9Original post

Quotes source post: 13208888

Mr Gnat speaketh the truth. My old C4 would pull like crazy coming out of turns on the track. Not crazy about the current owner power washing away some motor crud though.

POST 10Original post

accident damage is important to acknowledge - some guys throw the aero-kit on the car when accidents happen to replace front bumper/etc. -how is the paint quality on front bumper and all other panels? - a good PPI will determine quality of repair sand also determine extent of chain housing oil leak/etc.

POST 11Original post

Quotes source post: 13208943

There is a '99 listed at 22k. http://sfbay.craigslist.org/sby/cto/5523342244.html I presume you guys are discussing this one? http://sfbay.craigslist.org/eby/cto/5531566533.html

POST 13Original post

vitaminC: Yes, you are correct about the cars. My friend was looking into the $20K one. The sellers are new at the game, bought it from an auction and are providing very little info. The other car is a close cousin to mine! Except it has the "preferred" four spoke steering wheel (if you are a Doc, let's just say I don't prefer them). Best of luck! BTW, the $20K one just has so many options and nice mods IMO. The wheels could easily be changed.

POST 14Original post

Quotes source post: 13209546

They both look great on the outside but my tummy can't handle the grey interior they both have. The 20K car looks good but with all those cool pics you leave the oil cap dirty?

POST 15Original post

re-inspect it, try to varify any history you have, thats all you can do. Personally I would look for look for newer 2002 4S

POST 16Original post

Quotes source post: 13209527

I'm in SanFran this week and have been resisting the urge to reach out to him for a look since it was posted to the CL thread... Nice looking car even with a few things I'd need to take off. Would be a very nice blue twin to our Black one

POST 17 / ORIGINAL POSTEROriginal post

Yes, that is the one . I've got a refundable deposit on her contingent on a PPI at Kahlers. More to come here shortly.

POST 18Original post

Quotes source post: 13208888

Didn't know that, great info. I just know I like the feel of the rear wheel handling better than I did the AWD on the turbo I had. Weight may be a part of that as well but if I had a C4 I would probably convert it pretty quickly. I will say that the C4S is very sexy and if they made a widebody C2 with factory aero I would be all over it.

POST 19Original post

[QUOTE=Paul Waterloo;13209568]vitaminC: Yes, you are correct about the cars. My friend was looking into the $20K one. The sellers are new at the game, bought it from an auction and are providing very little info. theres a scary bit of info - proceed slowly

POST 20 / ORIGINAL POSTEROriginal post

Quotes source post: 13209568

[QUOTE=groovzilla;13209873] You were, right! I have a signed document (took the guy three amendments to get the document right) by the seller and myself explicitly specifying an agreed upon price contingent on the PPI. I get a call at 5:15pm stating they had another buyer and wanted to know if I would counter. I asked to cancel my deposit based on these poor business practices. I will be taking this up with the BBB. Just a warning for all of you in case you see this car relisted anywhere. It's being sold by a company named B&T Motors. They're a DBA under Pleasanton Smog and Repair. Lesson learned...

POST 21Original post

https://rennlist.com/forums/vehicle-...rera-aero.html If you are serious, here you go. Great mods, full maintenance history, beautiful car.

POST 22Original post

Quotes source post: 13212812

But...no mention of IMS replacement or new clutch - at 115K clutch receipt better be available or plan on that being the 1st repair

POST 23Original post

Quotes source post: 13213061

Your twists are dying to be powder coated.

POST 24Original post

never was a fan of black wheels - besides, i wouldn't have the time to be dropping them off at all the black lives matter rallies

POST 25Original post

Quotes source post: 13213089

[Image-only post; no author-written text. Original image references:] https://rennlist.com/forums/graemlins/roflmao.gif

POST 26Original post

Quotes source post: 13209873

[QUOTE=ancientsanskrit;13211333] I test drove this car and decided to buy a different 911. The sellers original ad was not very well written, so I decoded the VIN and drafted a better ad to help him since he didn't know a lot about 911s. Sorry to hear about the way you were treated. By the way, I have no affiliation with the seller.

POST 27 / ORIGINAL POSTEROriginal post

No worries...win some, lose some.

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