12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH'99 2.5L Runs fine, intermittent check engine light - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Replace tank valve
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.
'99 2.5L Runs fine, intermittent check engine light - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work
Replace any of your sai components, i have a full
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
I don’t know what the exact cause of your errors are, but If you need to replace any of your SAI components, I have a full set minus the crossover tube available.
'99 2.5L Runs fine, intermittent check engine light - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary
Leading evidence: 'Replace tank valve' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace any of your sai components, i have a full' (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 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
I don’t know what the exact cause of your errors are, but If you need to replace any of your SAI components, I have a full set minus the crossover tube available.
'99 2.5L Runs fine, intermittent check engine light - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Set minus the crossover tube available
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
I don’t know what the exact cause of your errors are, but If you need to replace any of your SAI components, I have a full set minus the crossover tube available.
'99 2.5L Runs fine, intermittent check engine light - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (3)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace any of your sai components, i have a full
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
I don’t know what the exact cause of your errors are, but If you need to replace any of your SAI components, I have a full set minus the crossover tube available.
'99 2.5L Runs fine, intermittent check engine light - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Set minus the crossover tube available
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
I don’t know what the exact cause of your errors are, but If you need to replace any of your SAI components, I have a full set minus the crossover tube available.
'99 2.5L Runs fine, intermittent check engine light - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.
12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 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: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hello,
My 99 2.5L Manual Boxster has just over 133K. Recently it's been the victim of a intermittent check engine light that will come on, go off, then stay a few days.
I was able to pull these codes
Porsche Error Codes6/8/18
P0410
Secondary air injection system Cylinder (1-3) Signal implausible
P1411
Secondary air injection system Cylinder (4-6) Signal implausible
P1124
Oxygen sensing range 1 Cylinder (1-3)
P1126
Oxygen sensing range 1 Cylinder (4-6)
P0442
Fuel tank ventilation minor leak below limit value
I cleared the codes with my Durametric and it's been fine ever since.
Any ideas?
I don’t know what the exact cause of your errors are, but If you need to replace any of your SAI components, I have a full set minus the crossover tube available. Removed from my ‘98 at 46k miles & working fine when my car crossed the grandfather line and no longer has to pass emissions.
Will let it all go cheap.
No issues on my end, no parts needed. Was more interested by the idea of removing unnecessary smog equipment. Any performance or other benefits? Easy to do?
I did it to save about 10lbs of weight for autocross. Having completed it, I would only recommend this if you are taking the intake manifold off for another reason. Too much work for this by itself.
There are several components involved and it is rarely the air pump that fails. If it's working, you'll hear it at cold startup.
FYI: p0446 has nothing to do with the SAI system. That's an EVAP code.
at cold startup. So maybe the sound that I think is the fan working is the air pump. Also, I have started to diagnose the EVAP problem and will go after the valve near intake and the canister. Already replaced the tank valve on canister.
Thanks Particle.
Secondary Air Injection System (cold starting emissions system, about 14 parts and lots of hoses). Both renntech and 986 have diagnostic instructions and there is even a flow chart and parts diagram. I captured some SAI stuff
here
.
