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YOUR RESEARCHhow do you clean a MAF?
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Check & it's a t15 bit you need
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Leading evidence: 'Check & it's a t15 bit you need' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check & it's a t15 bit you need' (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.
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Performed · outcome unconfirmed
Use Shell V Power - My daughter has an Audi A3 1.8T and the engine management fault lamp indicated a fault about every 2 months and had new sensors fitted each time by the main dealer under warranty, it was running on normal 95 unleaded, the last time this happened, in desperation I suggested that she switch to V Power and within 2 days the fault had disappeared, to prove that this was not a coincidence she went back to the original fuel and the fault returned, she now only uses V Power and has not had any recurrence of the problem.[
Check dealers report and it definitely sayscleaned or
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Suggestion
I know it does not make sense, but since changing the fuel the problem has gone away, I have checked the dealers report and it definitely sayscleaned or changed air flow sensor, they have not changed the Lambda probes - perhaps they should have![>:]
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.
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Suggestion
Thanks for that, if it happens again I will check the inlet as you suggest and I will endeavour to speak to the technician rather than the service receptionist.
Clean mass airflow (maf) sensor gets mentioned quite a bit
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Suggestion · Original poster
Cleaning the mass airflow (MAF) sensor gets mentioned quite a bit when the engine seems to stutter but how exactly do you clean it?
Check dealers report and it definitely sayscleaned or
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
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Discussions that contain suggestions
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Suggestion
I know it does not make sense, but since changing the fuel the problem has gone away, I have checked the dealers report and it definitely sayscleaned or changed air flow sensor, they have not changed the Lambda probes - perhaps they should have![>:]
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
Thanks for that, if it happens again I will check the inlet as you suggest and I will endeavour to speak to the technician rather than the service receptionist.
Discussions that performed work without a confirmed outcome
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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
Use Shell V Power - My daughter has an Audi A3 1.8T and the engine management fault lamp indicated a fault about every 2 months and had new sensors fitted each time by the main dealer under warranty, it was running on normal 95 unleaded, the last time this happened, in desperation I suggested that she switch to V Power and within 2 days the fault had disappeared, to prove that this was not a coincidence she went back to the original fuel and the fault returned, she now only uses V Power and has not had any recurrence of the problem.[
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 know it does not make sense, but since changing the fuel the problem has gone away, I have checked the dealers report and it definitely sayscleaned or changed air flow sensor, they have not changed the Lambda probes - perhaps they should have![>:]
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 know it does not make sense, but since changing the fuel the problem has gone away, I have checked the dealers report and it definitely sayscleaned or changed air flow sensor, they have not changed the Lambda probes - perhaps they should have![>:]
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.
14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 1 discussions
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Generation: 20261026T181445Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Cleaning the mass airflow (MAF) sensor gets mentioned quite a bit when the engine seems to stutter but how exactly do you clean it? 'Cleaning MAF' in the search function doesn't provide a DIY guide, so I'm curious.
1) Remove MAF from vehicle
2) Spray copious amounts of carb cleaner over the entire MAF. Allow to flash off & repeat a couple of times. DO NOT TOUCH THE ELEMENT!
3) Replace
The only tricky part is finding a torx bit with a hole in the middle.
Hmm, I don't know about the Torx bit being "readily available" - I was lucky & one came with a "every conceivable bit & a few more" kind of kit I picked up at Maplins for, IIRC, under a tenner. Carb cleaner (or Maplins electrical contact cleaner also works) is readily available. The Torx bit is required to remove the MAF from the large plastic pipe it normally sits in. If you can't get the torx bit, you could just remove the plastic pipe & spray cleaner at the MAF inside. Not as neat but should work just fine.
Just checked & it's a T15 bit you need.
Good torx set from Machine Mart:
http://www.machinemart.co.uk/shop/product/details/cht569-100pce-bit-set
I bought this set when I needed to remove my MAF.
Has come in handy on several occasions since.
Not sure if this help
Use Shell V Power - My daughter has an Audi A3 1.8T and the engine management fault lamp indicated a fault about every 2 months and had new sensors fitted each time by the main dealer under warranty, it was running on normal 95 unleaded, the last time this happened, in desperation I suggested that she switch to V Power and within 2 days the fault had disappeared, to prove that this was not a coincidence she went back to the original fuel and the fault returned, she now only uses V Power and has not had any recurrence of the problem.[
]
The MAF cannot be directly affected by fuel as it sits in the air intake, long before any fuel is introduced. The sensors you are thinking of are the Lambda (oxygen) sensors in the exhaust system which detect the levels of oxygen in the exhaust gasses. Sounds like the dealer didn't do the ECU reset & training procedure after replacing the Lambda sensor.
I know it does not make sense, but since changing the fuel the problem has gone away, I have checked the dealers report and it definitely sayscleaned or changed air flow sensor, they have not changed the Lambda probes - perhaps they should have![>:]
Hmm, the only thing that the MAF really doesn't like is oil contamination. I suppose it's possible that with better fuel the ECU has not seen a knock-sensor signal & so hasn't needed to retard the timing & that may have had a knock-on effect on the crankcase pressure which has meant less oil vapour being recycled through the inlet. It would be inteseting to see what the state of the inlet pipework is. Bet there's a fair bit of condensed oil in there...
Thanks for that, if it happens again I will check the inlet as you suggest and I will endeavour to speak to the technician rather than the service receptionist.
Regards
Geoff
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