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#1
04-12-2003, 10:20 PM
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1999 chev tahoe
what does the mass air flow sensor do ?:alien:
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#3
04-12-2003, 10:35 PM
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it tells the ECU how much air the engine is sucking in, therefore allowing the ECU to make necessary adjustments to the rest of the engine. I can't fully explain what it does, but that sort of gives you the idea.
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Tony 91 Civic Sedan DX - Stock 287k Miles
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#4
04-12-2003, 11:03 PM
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The mass air flow (MAF) sensor measures the amount of air entering the engine. The VCM uses this information to determine the operating condition of the engine in order to control the fuel delivery. A large quantity of air indicates an acceleration. A small quantity of air indicates a deceleration or an idle.
The scan tool reads the MAF value and displays the MAF value in grams per second (gm/sec). At idle, the MAF value should read between 5 gm/sec - 7 gm/sec on a fully warmed up engine. The values should change rather quickly on acceleration, but values should remain fairly stable at any given RPM. When the VCM detects a malfunction in the MAF sensor circuit, the following DTCs will set: DTC P0101 System Performance DTC P0102 Frequency Low DTC P0103 Frequency High
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Shop Foreman Corvette Specialist A.S.E. Master Technician L1 Certified A.S.E. Master Machinist GM Certified Technician
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#5
04-13-2003, 02:30 PM
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mass air flow sensor
so does ram air or kn filters really help or does the computer
shut it down to factory specs.:alien:
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#6
04-13-2003, 02:36 PM
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oh yea, a ram air and k&n does help, the sensor just tells the computer how much air is coming in so everything else can try and step up and meet it. Or I think that is what it does. bowtie's definition lost me completely
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Tony 91 Civic Sedan DX - Stock 287k Miles
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#7
04-13-2003, 02:39 PM
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mass air flow sensor
thank you. is it safe to take out the screen in the sensor:alien:
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#9
03-21-2006, 08:58 PM
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Re: 1999 chev tahoe
I took mine out a long time ago and it did help with performance a bit. I've heard of a lot of people doing this and I have never heard of any problems with doing it. I've got a K&N cold air intake too.
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#10
03-22-2006, 07:35 PM
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Re: 1999 chev tahoe
When I had my 94 Caprice with the LT1 engine, there was a lot of debate on that issue too. If I remember, there was no noticeable difference after removing the screen. Some people ended up doing damage to the fine wires running through it and had to replace it.
Looking at the date of this original post, he probably moved on.
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97 Tahoe 2WD LT (mine) 00 Astro (wife's) 89 S-10 p'up (daughter's) 72 VW Beetle (mine too)
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