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Igeo Samba Member
Joined: September 25, 2018 Posts: 888 Location: Oakland, CA
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Posted: Sun Feb 25, 2024 3:57 pm Post subject: MAF Sensor? (Solved, Air temperature sensor) |
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1987 2.1.
Is this thing sticking down in the airstream of the intake tract a MAF sensor? Do they like periodic MAF cleaner treatment? _________________ 1987 Westfalia 2.1 WBX Manual |
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kamzcab86 Samba Moderator
Joined: July 26, 2008 Posts: 7915 Location: Arizona
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Posted: Sun Feb 25, 2024 4:27 pm Post subject: Re: MAF Sensor? |
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Igeo wrote: |
Is this thing sticking down in the airstream of the intake tract a MAF sensor? Do they like periodic MAF cleaner treatment? |
That's an intake air temperature sensor. From the Pro-training Manual:
" It is a negative temperature coefficient (NTC) resistor, which means its resistance value drops as its temperature increases. The signal it supplies to the control unit is used to modify fuel injection rate depending on intake air temperature. The sensor can be tested by measuring the resistance value of the sensor and comparing the reading to a graph."
Whenever I have mine out - for whatever reason - I clean everything up, and take a look at that sensor. If it's dirty, I'll give it a squirt of Berryman's cleaner. _________________ ~Kamz
1986 Cabriolet: www.Cabby-Info.com
1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子 |
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Igeo Samba Member
Joined: September 25, 2018 Posts: 888 Location: Oakland, CA
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Posted: Sun Feb 25, 2024 4:57 pm Post subject: Re: MAF Sensor? |
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Thanks. That makes sense based on what I know about how the AFM works. Im chasing a low rpm stumble, like when running hard all day then trundling around a campground in 1st at below around 2000 rpm. Stumble as in momentary loss of throttle response. Rarely and one or two revs to clear it's throat and it's good again. Its the only bad habit the van has. Runs really well otherwise. _________________ 1987 Westfalia 2.1 WBX Manual |
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Vanagon Nut Samba Member
Joined: February 08, 2008 Posts: 10367 Location: Sunshine Coast B.C.
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Posted: Sun Feb 25, 2024 5:24 pm Post subject: Re: MAF Sensor? |
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Igeo wrote: |
... Im chasing a low rpm stumble, like when running hard all day then trundling around a campground in 1st at below around 2000 rpm. Stumble as in momentary loss of throttle response. Rarely and one or two revs to clear it's throat and it's good again. Its the only bad habit the van has. Runs really well otherwise. |
Check the idle switch function and adjustment?
Neil. _________________ 1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
VE7TBN |
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