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911uk

Power Flat spot.

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Original source
15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPower Flat spot.

Reported or suspected cause

maf and also had new coils

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
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 report identifying 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.

Reported cause

It was the MAF and also had new coils..

Power Flat spot.
Frequently discussed work

Check maf first

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

check MAF first!

Power Flat spot.
Read full discussion summary

Leading evidence: 'maf and also had new coils' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'maf and also had new coils' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check maf first' (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.

Read captured replies

1 matching discussions · 15 captured posts examined · 1 partial discussions

Compare 4 other evidence results

still there

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
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 report identifying 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.

Reported cause · Original poster

I have recently changed the coil packs but the problem is still there.

Power Flat spot.

Replace by the dealer opposite the factory in zuffenhausen

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

Actually had the MAF sensor replaced by the dealer opposite the factory in Zuffenhausen after the car was misbehaving on the way there, and was on my way to another job at CERAM (GS450h launch training).

Power Flat spot.

Replace ignition coils

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 have recently changed the coil packs but the problem is still there.

Power Flat spot.

Check maf first

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

check MAF first!

Power Flat spot.
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.

Check maf first

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

check MAF first!

Power Flat spot.

Replace by the dealer opposite the factory in zuffenhausen

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

Actually had the MAF sensor replaced by the dealer opposite the factory in Zuffenhausen after the car was misbehaving on the way there, and was on my way to another job at CERAM (GS450h launch training).

Power Flat spot.

Replace ignition coils

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

I have recently changed the coil packs but the problem is still there.

Power Flat spot.

Use electronic throttle as well as brakes

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 PSM uses electronic throttle as well as brakes.

Power Flat spot.
Reported and suspected causes (2)

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

maf and also had new coils

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying 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.

Reported cause

It was the MAF and also had new coils..

Power Flat spot.

still there

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying 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.

Reported cause · Original poster

I have recently changed the coil packs but the problem is still there.

Power Flat spot.
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.

15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 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: 20261027T013556Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Old forum user Unidentified(11139) wrote: Hi All. Looking for a bit of advice. My 2000 year 3.6 996 has a big flat spot in the power after about 4500 and 5000rpm, it still pulls but a definate lack of power upto the redline. Any Idea's on what it could be. I have recently changed the coil packs but the problem is still there. Migration info. Legacy thread was 109107

POST 2Original post

could it be the MAF? Migration info. Legacy thread was 109109

POST 3Original post

I'm not sure if this is the same issue but : When I accelerate fairly hard (to about 6000rpm) there is a lag at about 4500rpm in the following gear. It's only very briefly and has only recently happened but it's noticable and it's now starting to bug me. Any clues gratefully received. Migration info. Legacy thread was 109118

POST 4 / ORIGINAL POSTEROriginal post

Old forum user Unidentified(11139) wrote: My flat spot occurs under hard acceleration after about 4500 and it doesn't get any better. if you ease off slightly then re-apply the power gently it's ok but under full throttle it's always there. Migration info. Legacy thread was 109120

POST 5Original post

As smtk said it sounds like the MAF to me... Migration info. Legacy thread was 109121

POST 6Original post

Almost certainly MAF - had the same thing myself last year... Got it fixed and then next day I could do this: /images/migration/UploadedForumImages/DSC_1366-lge.jpg ... one-handed! Migration info. Legacy thread was 109124

POST 7Original post

check MAF first! Migration info. Legacy thread was 109147

POST 8Original post

ooo ooo i got one right what do i win? Migration info. Legacy thread was 109161

POST 9Original post

the satisfaction that you helped a fellow owner re-establish the enjoyment of thier car - asking for anything more would be greedy :wink: Migration info. Legacy thread was 109173

POST 10Original post

Wattie. That is nothing short of mental My power lag is to brief incredibly brief. By the ime time I've felt the lack of power the engine has kicked in again. It feels like a "kangaroo" on the clutch. (before any p*ss taking begins I'm not kangaroo-ing the clutch!) PS Wher are you driving at that fast?? Migration info. Legacy thread was 109177

POST 11Original post

Autobahn of course... :wink: How does the advert go? "If you can, you should" lol :twisted: Actually had the MAF sensor replaced by the dealer opposite the factory in Zuffenhausen after the car was misbehaving on the way there, and was on my way to another job at CERAM (GS450h launch training). Still think MAF sensor is a good place to start looking - they are a bit prone to problems it seems on 996s and would definitely cause those sort of symptoms. If it's not MAF, it could be a fault somewhere in the electronic throttle system - e.g. pedal sensor, electronic throttle motor? Migration info. Legacy thread was 109182

POST 12Original post

I think his car is a pre-face-lift 996... ie, it doesn't have e-Gas (released on the facelift 996). Migration info. Legacy thread was 109206

POST 13Original post

Is it a C2 or a C4? If it's a C4 it's e-gas anyway... C2s had e-gas if PSM specified I think? As PSM uses electronic throttle as well as brakes. Migration info. Legacy thread was 109243

POST 14Original post

E-Gas??? Sound like something I should've have been taking for a good night 10 years ago. Mine is a 98 C2. It does have Traction control (not as PSM though). Thanks Matt Migration info. Legacy thread was 109273

POST 15Original post

I had flat spot exactly the same also a slight miss fire.. It was the MAF and also had new coils.. OK now Migration info. Legacy thread was 109757

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