6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHnegative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported repair
Replace oil filler tube
Reported resolution
1
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 report a fix
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1 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 fix · Original poster
(vacuum system re-done al fixed ) , leaky AOS (replaced now ), new FPR , new upstream 02 sensors both banks , new spark plugs , new MAF sensor , bank 1 intake gaskets replaced , oil fill tube replaced several smoke test - last test no more leaks as of now.
negative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Replace oil filler tube' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, The most frequently discussed action is 'Replace oil filler tube' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Replace oil filler tube', supported by resolution reports in 1 discussions. 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
and did you disconnect the battery to reset the trims after doing the work?
negative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace bank 1 intake gaskets since
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
AND also just got the evap purge valve - replacing bank 1 intake gaskets since that has to be removed anyways to get to the valve .
negative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reset trims
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
and did you disconnect the battery to reset the trims after doing the work?
negative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Run after a while seems
Suggestion or failed attempt
No successful repair reported for this finding.
0
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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 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
last night got my car running after a while seems to idle and run pretty good however bank 1 LTFT - 13 bank 2 LTFT -14 WTF....
negative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (10)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace oil filler tube
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1
1 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 fix · Original poster
(vacuum system re-done al fixed ) , leaky AOS (replaced now ), new FPR , new upstream 02 sensors both banks , new spark plugs , new MAF sensor , bank 1 intake gaskets replaced , oil fill tube replaced several smoke test - last test no more leaks as of now.
negative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Test hate
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
also before the last rive cycle I had deleted the MIL since then I have completed 7 components for the emission test - hate to reset everything and start getting it ready again.!!!!
negative LTFT both banks -13,-14 constant ? - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Actions with reported resolution accounts (1)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace oil filler tube
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1
1 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 fix · Original poster
(vacuum system re-done al fixed ) , leaky AOS (replaced now ), new FPR , new upstream 02 sensors both banks , new spark plugs , new MAF sensor , bank 1 intake gaskets replaced , oil fill tube replaced several smoke test - last test no more leaks as of now.
negative LTFT both banks -13,-14 constant ? - 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.
6 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.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
both banks upstream sensor voltage fluctuating pretty good , I m afraid soon or later MIL will come back and emission components 2 of still not completed test so waiting for them to be completed so I can the inspection..
hello guys ,
So I have been dealing with vacuum leaks for a while LTFT high both -/+ so i TOOK care of the following items :
(vacuum system re-done al fixed ) , leaky AOS (replaced now ), new FPR , new upstream 02 sensors both banks , new spark plugs , new MAF sensor , bank 1 intake gaskets replaced , oil fill tube replaced
several smoke test - last test no more leaks as of now.
I m down to the "evap purge valve" - read somewhere that maybe staying open causing air/fuel mixture issues !!!!!
last night got my car running after a while seems to idle and run pretty good however bank 1 LTFT - 13 bank 2 LTFT -14 WTF....
both banks upstream sensor voltage fluctuating pretty good , I m afraid soon or later MIL will come back and emission components 2 of still not completed test so waiting for them to be completed so I can the inspection..
help a brother out here what else ?
what tool are you using to get the data? using a porsche tool you should get two readings:
FRA which is the closed-loop load value and is a number that can be between 0.7 and 1.32 before you get a code.
RKAT which is the idle value and can be between +/-4% before code.
vacuum leaks will usually impact idle before load as the small amount of air has a bigger impact when idling than when at load sucking in a lot of air.
load trim issues are often due to fuelling.
bad sensors (o2, maf) can get you too.
i got that data using ICarsoft PORIII
although I also have durometric which I can also pull the data using it .
MAF sensor and 02 new ones too .
also before the last rive cycle I had deleted the MIL since then I have completed 7 components for the emission test - hate to reset everything and start getting it ready again.!!!!
planning to take it for smog test / emission test here in TX in about an hour or so is past due two months now.
Years ago when dealing with a bad MAF sensor I saw something that may be similar. I replaced the MAF, cleared the codes and fired up the car while watching the Durametric fuel trims. To my horror they were out of range. I thought I wasted a bunch of money. It took many minutes of running at idle for them to settle out and the engine to run smoother.
The lesson I learned, is anytime after to clearing the codes let the car idle for a while before driving it. I'm not sure what your timeline looks like, but this is something to consider.
I did DO that let it idle for a while several times, fuel trims specially LT were pretty good till I drove back and forth to work and the gym - I have also noticed at increase speed higher RPMs LTFT are as high as -17 on Bank 2 and bank 1 -15 ALWAYS banks around 2 % points difference.
I m thinking there may be a chance on the 02 sensors not reading right perhaps !! so swapping the upstreams sensors from bank1 to bank2 really curious if BANK 2 MAY STILL BE HIGHER OR NOT
AND also just got the evap purge valve - replacing bank 1 intake gaskets since that has to be removed anyways to get to the valve .
This is a source reference. Confirm exact model applicability in the original material.
