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Trying to find a pic, and this is the best I could find of what might be a MAF sensor (immediately aft of the air filter), but I don't see any wires going to this tube at all. Does anyone have better pictures and can confirm if it has a MAF or not? Just wondering if it will be a speed density tune perhaps?
A Mass Air Flow sensor (MAF) is one of the key components of an electronic fuel injection system in your car. It is installed between the air filter and the intake manifold of the engine. See the diagram. The mass air flow sensor measures the amount of air entering the engine or the air flow.
Mass Air flow Sensor (MAF)
In modern cars, an intake air temperature sensor or IAT is built in the mass air flow sensor. There are few types of air flow sensors, however, modern cars use a hot-wire type. Let's see how it works.
How a hot-wire air flow sensor works
A hot-wire mass air flow sensor has a small electrically heated wire (hot wire). A temperature sensor installed close to the hot wire, measures the temperature of the air near the hot wire.
When the engine is idling, a small amount of air flows around the hot wire, so it takes a very low electric current to keep the wire hot. When you press the gas, the throttle opens allowing more air flow over the hot wire. The passing air cools the wire down.
Toyota mass air flow sensor (MAF)
Volkswagen mass airflow sensor
The more air flows over the wire, the more electrical current is needed to keep it hot. The electric current is proportional to the amount of the air flow. A small electronic chip installed inside the air flow sensor translates the electric current into a digital signal and sends it to the engine computer (PCM). The PCM uses the air flow signal to calculate how much fuel to inject. The goal is to keep the air/fuel ratio at the optimal level.
In addition, the PCM uses the air flow readings to determine the shift points of the automatic transmission. If the air flow sensor doesn't work properly, the automatic transmission might shift differently too.
I didn't know what a MAF sensor was so here is what I found in case anyone else doesn't know. JUST CALL ME JAKE!!!
That looks more like the electric throttle body blade motor than a MAF.. Usually, aren't they in the tube between the TB and Airfilter housing? Typically in a place where they're not going to hit turbulence and whatnot, so they can have an accurate measurement of the air.
If you look closely, you can see what looks like a rectangular nub of a platform and typically MAF is after filter.. So, I ~think~ it'll go right there.
If you look closely, you can see what looks like a rectangular nub of a platform and typically MAF is after filter.. So, I ~think~ it'll go right there.
Both of these are wrong, the 1st is the ETB (electronic throttle body). There is no way to put the MAF in the TB or anywhere near or under the intake manifold at all. The MAF sensor relies on Laminar airflow in order to work, because of that it needs to be away from the throttle body and in a straight piece of the intake tubing. Typically GM puts them somewhere between the TB and the airbox and usually in a place where the airflow comes straight across the MAF with no turns before or after the MAF. Any place where the intake track tubing makes a turn before or after the MAF causes the air to tumble and disrupts the airflow across the MAF and skews the signal causing a "dirty" signal.
The current generation GM MAF is actually 3 sensors, it is the MAF, the IAT (Intake Air Temperature) and the MAP or Barometric sensor. On the N/A LT2 engine the MAP in the MAF will be the barometric sensor and the one in the intake manifold will be the MAP (Manifold Absolute Pressure).
Both of these are wrong, the 1st is the ETB (electronic throttle body). There is no way to put the MAF in the TB or anywhere near or under the intake manifold at all. The MAF sensor relies on Laminar airflow in order to work, because of that it needs to be away from the throttle body and in a straight piece of the intake tubing. Typically GM puts them somewhere between the TB and the airbox and usually in a place where the airflow comes straight across the MAF with no turns before or after the MAF. Any place where the intake track tubing makes a turn before or after the MAF causes the air to tumble and disrupts the airflow across the MAF and skews the signal causing a "dirty" signal.
The current generation GM MAF is actually 3 sensors, it is the MAF, the IAT (Intake Air Temperature) and the MAP or Barometric sensor. On the N/A LT2 engine the MAP in the MAF will be the barometric sensor and the one in the intake manifold will be the MAP (Manifold Absolute Pressure).
The part I circled isnt near the TB. It's just after the filter on the filter housing box and it is the last straight piece of filtered air tubw before the electric TB which we already pointed out before you re explained to us.
Unless you can show concrete proof you know 100% where it is, you dont get to just up and say the circled area is wrong. We pointed out the ETB not being correct because it is known what that is.
The part I circled isnt near the TB. It's just after the filter on the filter housing box and it is the last straight piece of filtered air tubw before the electric TB which we already pointed out before you re explained to us.
Unless you can show concrete proof you know 100% where it is, you dont get to just up and say the circled area is wrong. We pointed out the ETB not being correct because it is known what that is.
Based on the blurry quality of the pic used, no way to tell what that is that was posted. My point still stands, based on how GM has recently been putting the MAF into the intake tract it will be just after the exit from the air filter box.
09-25-2019, 10:36 AM
Does the LT2 have a MAF sensor?
