21 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHelp!
Leading reported evidence
Install backwards
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
I've read, but can't confirm, that the cheaper ones can be bad and that some can be installed backwards.
Leading evidence: 'Install backwards' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean throttle body' (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.
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.
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
Disconnect the battery for 15 minutes to reset the DME/ECU.
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
Disconnect the battery for 15 minutes to reset the DME/ECU.
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.
21 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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I am at my wits end. I had the ABS, PSM , and occasionally a CEL. I would clear them but the ABS and PSM would come back instantly the CEL after a few miles. I replaced the brake switch last week. Did nothing. Researched and found it may be the MAF sensor. So, I replaced that and a new air filter because it was black and greasy. Now I have no warning lights but it runs very rough. What to do now? GRRRRR!
Running rough? New MAF. Disconnect the battery for 15 minutes to reset the DME/ECU. If you have E-gas, do a calibration. Then go for a steady drive to have the DME reset the initial values.
Have it scanned during a test drive and see what the numbers show. Without any real data your guess is good as mine. If you don't do this, it will get expensive.
I'll try that! Good idea. What is E gas? Ethanol? I usually run Shell V-power 93 octane. Getting into new territory for me. I have no idea about calibration.
If you have an electronic throttle, e-gas calibration (or throttle adaptation) is performed by:
1. Switch the ignition on for 1 minute without starting the engine.
Do not actuate the accelerator pedal (for instance, make sure
that there is not a carpet pressing on the pedal).
2. Switch off ignition for at least 10 seconds.
3. Switch on ignition. You should hear some "clicking" from the engine compartment as the computer adjusts the throttle
The following conditions must also be observed, otherwise learning
is not possible:
♦Vehicle is stationary
♦Battery positive voltage between 10 V and 16 V
♦Engine temperature between 5 �C and 100 �C
♦Intake air temperature between 10 �C and 100 �C
However, a "black and greasy" air filter doesn't sound good. If you remove the rubber hose that goes from the airbox to the throttle body, look at the throttle body and make sure it isn't covered in oil. While you are there, clean the throttle body.
"The 1999 model was the only 996 to have a throttle cable connecting the gas pedal to the engine � perhaps a desirable feature for some shoppers. Go with a 2000 model or later and you�re treated to e-gas, and possibly Porsche Stability Management (PSM) on cars so optioned."
K&N...or most any oiled filter belongs only on a race car which gets serviced after every race or lawnmower in my opinion. Seems counterintuitive to me to disable a true cold air intake(the snorkel) and put an oiled filter in the hot engine room then try to block said filter off from the heat with walls. This doesn't take into account the maintenance nightmare of the oiled filter and what can happened if serviced incorrectly. I don't get it! Must be the 20 h.p. gain the manufacturers claim...RIGHT!
The cloth filters come in both Dry and Wet depending on vendor, none of them
work if the directions are not followed carefully as to cleaning and oiling.
The K&N's are washable,, its the whole point of them, was there a problem
when you took it off?
The MAF needs to be > a foot from the filter if your not using a filter box,
the air gets too turbulent and ticks it off badly. If you have oil in the intake path
before the MAF it will foul and kill the unit, they can be cleaned
with MAF cleaner but its a coin toss if it will work once they get oil fouled.
This is a source reference. Confirm exact model applicability in the original material.
