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I dont think that the 120 V6 uses as an Airflow sensor as such. They are located before the throttle body on the inlet path after the filter to prevent dirt from fouling. I have not seen this on my V6. If its there it must be under the inlet plenum.
I would say they use MAP sensor instead to control the mixture in conjunction with the EGO in the exhaust.
Ensure that your air filter is clean and your tyre pressures are good. Run some injector clean through at your next fuel stop as well.
Replaced the fuel filter, checked the air filter and ran a load of injector clean, all with no improvement.
Today i dropped into Toyota Toowoomba and one of the mechanics came out, showed me the position of the air flow sensor; its a little probe that screws into the top of the air box, just after the air filter. The probe electronically measures the flow rate of air passing it and adjusts the mixture. Mechanic explained that they tend to get dirty and then the motor runs rich and fuel consumption increases - reckons its fairly common. He suggested i unscrew and give it a dose of contact cleaner.
So yes, our v6s do have an air flow sensor ... took a while to find it. Its now been cleaned. I'll provide an update on fuel consumption in a few weeks.
On the side, i was pleasantly surprised at how ready the Toyota guys were to offer help. Especially as i was up front with them that i had not had the vehicle serviced with them
Some of those models had a MAP Sensor and some didn't.The mazda and the Ford ranger are the exact same truck with the exception of the grill and tail lights. I am not sure if your saying that you have a map sensor and no wire or a wire and not map sensor.If there is no wire for a map sensor then you truck does not require one. If it has the wire then you will have to get a map sensor.The trucks that don't have a map sensor will have a Mass Air Flow Sensor, located at the top of the air filter box.
I hope this will help you.
This engine doesn't use a MAF sensor, it uses a different kind of sensor to measure air flow, it is called a MAP (manifold absolute pressure) sensor, it is about the size of a pack of smokes and has a single 7/32" vacuum hose going to it from the upper intake manifold, it should be on the engine compartment fire wall. See picture below.
Well there are several things that could cause this problem...
1. one of the coils may not be firing.
2. the ignition module could be bad.
3. the mass air flow sensor could be tellign the car to run rich (too much gas)
4. if the car is equiped with a map sensor it could do the same as a mass air flow sensor.
5. fuel pressure regulator could be leaking at vacuum port drawing in more fuel than needed.
6. the computer itself could be bad as well.
The car either has a map sensor or mass air flow not both. The mass air flow would be right after the air cleaner housing usually a 4 wire connector. map sensor is normally located on the rear of the upper intake manifold with 1 vacuum line going to it with 3 wire connector. Hope this helps.
If you look at the sensor it will have a vacuum hose to it and yes 3 wires, they are reference, ground and signal output Do not replace the sensor just because there is a code, that code means a problem with the system itself, it can be the sensor, the wiring the PCM, test first, replace parts only then, MAP sensors are expensive and it may no cure the problem.