6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH1999 996
Leading reported evidence
Fill with leaves
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: 'Fill with leaves' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean between the a/c condenser and the cooling radiators' (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 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
Ended up replacing the engine and did all the necessary updates before driving, and later selling the car.
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
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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.
Performed · outcome unconfirmed
I had the IMS replaced with the last clutch replace.
Clean between the a/c condenser and the cooling radiators
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
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Suggestion
The other thing I’d suggest is to remove the front bumper cover and clean between the A/C condenser and the cooling radiators on both sides.
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
If you don't know how many miles since the water pump was replaced, I would go ahead and replace it.
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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I'm looking at buying a 1999 911 Cabriolet, with 65k miles on it. Out side of RMS and IMS, what the top 5 other potential mechanical issues I should be looking at? First post - thanks.
The 99 years had dual ROW IMS, which made them
very
unlikely to have IMS issues. Of course a very small percentage had issues, but we are talking less than 3% of all cars. If it's been done, great! If you want to do it for peace of mind, go for it. However, it's not necessary on the 99s.
How do I know? I have a 99 and have had it for almost 20 years and I'm on the same IMS bearings. No issues. 65k miles is relatively low. Best thing is to have a reliable Porsche mechanic do a PPI on it.
Good luck!
I have a 99 996. Over 100K now. Only 3% had the bearing failure. I had the IMS replaced with the last clutch replace. If you read the 996 Carrera threads from the past, you would think 75% had the bearing failure. Buy the car and drive it as much as you can. The 99 Carrera is a $20K car with 60K miles or less. The owner history is more important than anything else. Less than 3 owners is good.
The 996 (fifth generation) was called a slab side. Egg looking headlamps... Blah, Blah Blah.
Best deal you will ever get. Liquid cooled block and heads means reliability.
10:1 weight to horse power means you will hauling arse. Very reliable.
A lot of Porsche 911's are investments. the 99 996 is not.
I bought a ‘99 that had an intermix. Ended up replacing the engine and did all the necessary updates before driving, and later selling the car.
A lot of the early liquid cooled cars are susceptible to cracked heads if overheated. If you’re looking for preventative measures, look at the water pump history. If there is no record of it being updated, then I’d replace it. New coolant as well, obviously.
Get a factory water pump only.
The other thing I’d suggest is to remove the front bumper cover and clean between the A/C condenser and the cooling radiators on both sides. You can only do this by removing the bumper cover. You will be amazed at the sand, leaves, cigarette filters and fluff that can get in there and reduce cooling capacity.
If you plan to do any DE’s then while you there, add the center radiator for increased capacity.
As mentioned.... If you don't know how many miles since the water pump was replaced, I would go ahead and replace it. If you have the dough, get a Porsche replacement. I picked up a rebuilt from NAPA and have over 30k and still hanging in there.
It drops out through the bottom and you got a little shoe-horning to get it drop down. Might a well throw a new serpentine belt on at the same time.
As mentioned also.... Remove the front clip and remove the leaves, dead dragon flies and small errant car parts from behind the radiators. I got a grocery bag filled with leaves.
Nice sports car. A blast on the curvy mountain roads.
