Clutch on it's last limb? Bucks in 4th gear
Jun 26, 2011, 10:34 PM
#32
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Thats not a heater, its most likely a photo transistor. Our MAF's are karmen Vortex types which use a photo coupler which usually is a LED and photo transistor.
The Air entering the Sensor passes a vortex generator which causes a disturbance in the air flow, then as this eddy flow of air passes, it's pulses bounce off a thin film mirror which will change the direction of light hitting the transistor at the frequency of the
air pulse. The transistor then sends a voltage signal that the ECU.
But the tap test is the way to diagnose it or if you have an oscilloscope you can apply power to the MAF and blow air trough it and see if its registering the frequency correctly.
So it could be one of the main three parts are not working the mirror is too dirty, the light source is not efficient or the transistor is bad.
Ok I went a little too much in detail there !
Athanasios
The Air entering the Sensor passes a vortex generator which causes a disturbance in the air flow, then as this eddy flow of air passes, it's pulses bounce off a thin film mirror which will change the direction of light hitting the transistor at the frequency of the
air pulse. The transistor then sends a voltage signal that the ECU.
But the tap test is the way to diagnose it or if you have an oscilloscope you can apply power to the MAF and blow air trough it and see if its registering the frequency correctly.
So it could be one of the main three parts are not working the mirror is too dirty, the light source is not efficient or the transistor is bad.
Ok I went a little too much in detail there !
Athanasios
I used electric parts cleaner at first, cause the maf cleaner says don't use on karman mafs but lots of guys on here had luck with it.
Jun 27, 2011, 05:19 AM
#34
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I used the CRC cleaner a few weeks ago and mine is working fine since. I wonder if the cleaner
messes up the mirror film so it does not reflect light properly.
We should have a small get together someplace for the WNY guys.
Athanasios
messes up the mirror film so it does not reflect light properly.
We should have a small get together someplace for the WNY guys.
Athanasios
Jun 27, 2011, 03:59 PM
#35
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Mine had 85k on it so probably was gonna be shot regardless.
It got really bad today where car wanted to stall several times. I had to keep moving the maf so It wouldn't cut out.
Got the new maf and so far hopefully it's well, just have to adjust idle cause I believe that old maf screwed up the idle.
How about the STM meet on July 10th. I think some locals are setting up a cruise.
It got really bad today where car wanted to stall several times. I had to keep moving the maf so It wouldn't cut out.
Got the new maf and so far hopefully it's well, just have to adjust idle cause I believe that old maf screwed up the idle.
How about the STM meet on July 10th. I think some locals are setting up a cruise.
Jun 27, 2011, 07:11 PM
#36
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What's the STM meet?
My car needs lots of maintenance, it has 95k. Its my DD and I mean I DRIVE it! lol
Need Timing belt soon( like 30k ago!! ) Breaks rotors and pads and caliper painted, AC just died on me today( gas is full) And it has tons of chips and dings.
I need more $$$ and Time to do all this.
Athanasios
My car needs lots of maintenance, it has 95k. Its my DD and I mean I DRIVE it! lol
Need Timing belt soon( like 30k ago!! ) Breaks rotors and pads and caliper painted, AC just died on me today( gas is full) And it has tons of chips and dings.
I need more $$$ and Time to do all this.
Athanasios
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