What should my mass air flow sensor read?
With a 78% opened EGR you should read about 290 mg/stroke. If the values you find are much lower, something is blocking the air flow or the MAF has gone bad. The air flow can be blocked by a clogged air filter, a clogged intercooler, a (partly) closed anti shudder valve, a clogged intake manifold or bad valves.
Where can I find the trouble code on my air flow sensor?
When the air flow sensor signal varies from the expected range, the PCM records a fault and stores the corresponding trouble code, illuminating the Check Engine light on the dash. This trouble code can be retrieved with a scan tool. The following trouble codes are usually associated with a mass air flow sensor:
How does a hot wire air flow sensor work?
How a hot-wire air flow sensor works. A hot-wire mass air flow sensor has a small electrically heated wire (hot wire) and a small temperature sensor installed close to the hot wire. The temperature sensor measures the temperature of the air near the hot wire. When the engine is idling, a very little air flows pass the hot wire,…
What should the air flow sensor read at idle?
So if the ECU reads 480 mg/stroke at idle, it equals to 108,000 * 480e-6 = 52 kg/hour air flow. 480 mg/stroke is the value you should read with a 1.9L engine during idle when the EGR is closed. One full cilinder filling is 0.48 liter.
Where is the intake air temperature sensor located?
The Intake Air Temperature (IAT) sensor of your vehicle is usually installed in the lefthand side of the intake manifold. It could be on the throttle body attached right to the intake manifold.
Where is the IAT sensor located on the intake manifold?
It ensures optimum combustion and efficient fuel consumption. Where Is the IAT Sensor Located? The Intake Air Temperature Sensor is located somewhere on your intake pipes between the air filter and the intake manifold. It is often integrated with the MAF Sensor. Often, it is also installed on the intake manifold.
With a 78% opened EGR you should read about 290 mg/stroke. If the values you find are much lower, something is blocking the air flow or the MAF has gone bad. The air flow can be blocked by a clogged air filter, a clogged intercooler, a (partly) closed anti shudder valve, a clogged intake manifold or bad valves.
Can a bad intake air temperature sensor be repaired?
The chances are that your car’s intake air temperature sensor (IAT) is damaged and that it should be fixed immediately to avoid any serious damage to the engine. In this article, you will learn the meanings & the symptoms of a bad intake air temperature sensor.
How much air flow does a Pierburg MAF have?
(If the turbo would be really working at idle, the air flow could be higher than 619 mg/stroke.) The output voltage of a Pierburg MAF during idle and closed EGR is about 1.6V. A Bosch MAF reads about 2.2V in this situation. With a closed EGR you should measure about 480mg/stroke. With a 78% opened EGR you should read about 290 mg/stroke.
How to calculate mass air flow from ECU?
Converting mg/stroke to kg/hour When reading data from the ECU, the mass air flow is not reported in kg per hour but in mg per stroke. Converting one value to the other is quite simple: At 900 RPM a 4 cilinder 4 stroke engine makes 900 RPM * 2 strokes/revolution * 60 minutes in one hour = 108,000 strokes.
How to test your mass air flow sensor?
Mass Air Flow Sensor -Quick test To Tell if Bad or Dirty! – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.
How can I Fix my mass air flow problem?
After cleaning it properly several times with MAF sensor cleaner & re-installing it, I realized one of the mounting screws wasn’t tightening fully, allowing it to seat properly into the plastic air inlet tube where it’s mounted. A slightly larger screw did the trick for me, although I can’t say I had similar symptoms as you’ve described.
Why is the mass air flow code setting?
The fact that yours is doing it under high load makes me think you have a fuel delivery problem and the mass air flow code is setting because the engine isn’t doing what the ECM is telling it to do. I had an 09 that from 70,000 miles on had constant P0101 issues.
How did the EGR cooler get out of warranty?
With the help of tech assistance at 95,000 we condemned the EGR cooler as it was restricted just enough to throw the mass air reading off at idle and set a P0101. Finally it made it out of warranty and we did a DPF and EGR delete via tuning and with a block off plate and the damn thing started setting the P0101 again.