15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH1999 996 suspension problems
Leading reported evidence
Check bushings and suspension while it was
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
I had the car aligned, replaced inner and outer steering links, put new tires on and checked all the bushings and suspension while it was on the lift.
Leading evidence: 'Check bushings and suspension while it was' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust best we could in the pits and it helped' (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 · Original poster
I had the car aligned, replaced inner and outer steering links, put new tires on and checked all the bushings and suspension while it was on the lift.
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
We adjusted best we could in the pits and it helped, but didn't eliminate the problem (at very high speed).
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
Check the flange nut on the rear lower control arm for tightness.
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 · Original poster
So I should setup strings to be parallel and check toe front and rear to see where I'm at?
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.
15 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: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
It started by just feeling a little oversteer in a hard turn under power. Now I'm feeling all squirly on the highway in straight line. It will pull to the right and then pull to the left. It feels like something dynamic is happening to the rear suspension. Straight line it will dive left or right and after it sets in a turn it feels normal but as you turn I feel the back end move outward. I had the car aligned, replaced inner and outer steering links, put new tires on and checked all the bushings and suspension while it was on the lift. Everything looks normal but its still there and getting scary to drive. It's got 72,000miles, no modifications, and has always been stored indoors. Thoughts?
Have to agree with Joe ^^^ Jack up the rear and remove the wheels so you can do a very careful inspection of all the suspension linkage. If you do not have the means or know how to do this, get it to an indy who knows your car or get it to a Porsche dealer. I would limit your driving anymore until you get it figured out. Sounds like something is majorly wrong/broken.
I was up under there myself with a pry bar and didn't find a single thing loose. I'll get back under and pay special attention to rear toe. I think that makes sense with what I'm feeling.
I had the same thing just happen on the track. On the front straight of Auto Club Speedway at 130 - it feels like the car is being steered by the rear end....back and forth. Pretty unsettling....
Toe at the rear passenger appeared to be off (we had to check with string). We adjusted best we could in the pits and it helped, but didn't eliminate the problem (at very high speed). Lower speeds and turns were not an issue. Drove home on the highway and didn't really notice (crappy CA highways). We're working on alignment now. Good luck.
Having the rear not track properly due to suspension is a frightening feeling - especially in a RWD car with the sensation of the rear end trying to overtake the front.
An alignment will at least tell you what's out of spec and will hopefully point to a broken/worn component...
Make sure that either of your rear shocks aren't blown too. If everything else looks tight and checks out, I would check the rear shocks, especially since you said they were original(no modification at least).
So I should setup strings to be parallel and check toe front and rear to see where I'm at? I'm assuming that they should both have some slight toe in for stability.
check out this alignment calculator for using strings.
https://robrobinette.com/DIYAlignmentCalculator.htm
It states that the strings need to be parallel, but do not need to be perfectly parallel with the vehicle. That's the magic of trigonometry in the calculations.
Had this happen to me at 140mph at COTA first time I raced there. Not a pleasant feeling.
COTA Qualifying Run - Loose Ball Joint - YouTube
Check the flange nut on the rear lower control arm for tightness. Also, as has already been suggested, check the toe links at the rear.
This is a source reference. Confirm exact model applicability in the original material.
