LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

MAF in 92 LS400

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Old 09-20-07, 01:20 AM
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wpai
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Default MAF in 92 LS400

Hi, everyone,

I used K&N filter. Recently, I felt my gas mileage somewhat drops in all-city driving, i.e., 6-7 km/liter, compared to 7-8 km/liter I used to get. I read some posts about the possibility of contaminating MAF with K&N so I took a look at my MAF. It appears that it's not the hot wire type and is more like the Karmen vortex type - so it's unlikely to be contaminated at all and I don't think it will ever need cleaning.
Does 92 LS400 use Karmen MAF? If so, what years of LS400 use hot wire type?
Old 09-20-07, 09:29 AM
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CptnTonus
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Originally Posted by wpai
Does 92 LS400 use Karmen MAF? If so, what years of LS400 use hot wire type?
Yes, a '92 LS400 has a Karman/Vortex type MAF. As far as I know, all LS400's came with that type of MAF. Toyota likes to use the Karman/Vortex MAF sensors. I think only the newest Toyotas are coming with hotwire MAF's.
Old 09-20-07, 10:47 AM
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sonyman
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Originally Posted by CptnTonus
Yes, a '92 LS400 has a Karman/Vortex type MAF. As far as I know, all LS400's came with that type of MAF. Toyota likes to use the Karman/Vortex MAF sensors. I think only the newest Toyotas are coming with hotwire MAF's.
1995+ use the hot-wire type.
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