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Does your passenger seat vibrate/shake at idle?

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20 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHDoes your passenger seat vibrate/shake at idle?

Leading reported evidence

Fill engine mounts

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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

However one thing to check is your fluid filled engine mounts.

Does your passenger seat vibrate/shake at idle?
Frequently discussed work

Adjust angle of the seat you can reduce the shaking

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

If you adjust the angle of the seat you can reduce the shaking.

Does your passenger seat vibrate/shake at idle?
Read full discussion summary

Leading evidence: 'Fill engine mounts' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'mods' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Adjust angle of the seat you can reduce the shaking' (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 · 20 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace mount and she's smooth at idle

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

Replaced the mount and she's smooth at idle again.

Does your passenger seat vibrate/shake at idle?

Adjust angle of the seat you can reduce the shaking

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

If you adjust the angle of the seat you can reduce the shaking.

Does your passenger seat vibrate/shake at idle?

mods

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
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 suspect a cause
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.

Suspected cause

About the vibration it is probably the mods.

Does your passenger seat vibrate/shake at idle?

Use now are not oiled

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 · Original poster

Furthermore, the filters EvoMS is using now are not oiled.

Does your passenger seat vibrate/shake at idle?
Frequently discussed actions (4)

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

Adjust angle of the seat you can reduce the shaking

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

If you adjust the angle of the seat you can reduce the shaking.

Does your passenger seat vibrate/shake at idle?

Fill engine mounts

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

However one thing to check is your fluid filled engine mounts.

Does your passenger seat vibrate/shake at idle?

Replace mount and she's smooth at idle

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

Replaced the mount and she's smooth at idle again.

Does your passenger seat vibrate/shake at idle?

Use now are not oiled

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

Furthermore, the filters EvoMS is using now are not oiled.

Does your passenger seat vibrate/shake at idle?
Reported and suspected causes (1)

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

mods

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.

Suspected cause

About the vibration it is probably the mods.

Does your passenger seat vibrate/shake at idle?
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.

20 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: 20261026T112012Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

If no one is sitting in my passenger seat while the car is idling, the seat will slightly vibrate and shake - this is especially noticeable on the seat back and the seat belt buckle. The whole car slightly vibrates at idle, including my seat, but it doesn't shake because it has my fat butt in it. In fact I notice that my idle isn't butter smooth, and that it "searches" about 50 RPM up or down. It started doing this after the EvoMS intake was installed, which I attribute to the removal of the air-straightener for the MAF. My car is also GIAC chipped, but they didn't change the idle at all. Perhaps this is just normal? It's not annoying, just seems slightly unrefined. I highly doubt my MAF is bad, as the car only has 16,000 miles on it, and the MAF was extremely clean when I looked at it and installed it in the EvoMS intake. Furthermore, the filters EvoMS is using now are not oiled. - Anthony

POST 8Original post

My tach doesn't bounce around noticeably, but the seats do vibrate at idle.

POST 9Original post

Okay, I'll bite....please explain how a vibrating passenger seat is a symptom of IMS failure...

POST 10Original post

Quotes source post: 6976071

I hope he's kidding around!

POST 11Original post

Streaking windshield wipers are also a sign of impending IMS failure. In fact writing on the Rennlist BB is a sure sign of impending failure. About the vibration it is probably the mods. However one thing to check is your fluid filled engine mounts. They can fail (oil leaks out) causing more vibration then "normal" to be transmitted through the chassis. Sometimes you can tell by looking at the the exhaust tips when the car is parked on a level surface. The tip on the failed side will often be noticably lower then the other.

POST 12Original post

mine did and I found a soft motor mount. Replaced the mount and she's smooth at idle again.

POST 13Original post

Mine does it. It bothered me at first but now I kind of like it--it's a link back to the days when 911s were a little more raw. I can do without the useless A/C and oil smells of yesteryear, though.

POST 14Original post

Quotes source post: 6976821

My wife says it smells like an animal, ha. My passenger seat has some good vibes, too.

POST 15Original post

Quotes source post: 6975748

Same for me. If your looking for more refined, try a lexus.

POST 16Original post

My passenger seat Rocks! When I bought it they told me it has the seat massage option. So...it's not??

POST 17Original post

Mine does as well. My Boxster S did it too, straight from the factory. I kind of like it. Sort of says "this car is for drivers -- passengers are about as welcome as functional cupholders or a good radio."

POST 18Original post

Mine does it as well. The tach stays level at idle but the passenger seat on both of 996's I've had.

POST 20Original post

+1 here too. If you adjust the angle of the seat you can reduce the shaking. Mine is only annoying when it rattles against the seatbelt.

This is a source reference. Confirm exact model applicability in the original material.