Even sluggish, contaminated or biased oxygen sensors may cause similar symptoms. Due to the abundance of air, the combustion process does not take place properly causing a problem with the engine. The passing air cools the wire down. Does the scan tool indicate that this diagnostic failed this ignition? To diagnose this issue, exhaust back pressure or the engine vacuum must be checked. It measures the intake flow rate by measuring a part of the entire intake flow.
It's not often that cause check engine light codes. It is obvious that the certified mechanic has more credibility since he has a certificate to prove his worth. The thermistor measures the temperature of the incoming air. Confirm your hypothesis as follows: First, make sure you have followed the steps outlined in the two rules above. This is different than the trucks mentioned above. However, problems with the wire harness near the sensor remain possible.
One recommended cleaner is the which can be found on the link on Amazon. If the airflow report was consistently increased or decreased by the same factor, say 10% or even 50%, the shape of its graph would remain the same. The sensor has two wires inside, of which one is heated and the other left cold. If the sensor doesn't measure the air flow correctly, the fuel injection system won't work properly. In addition, if the air filter was recently replaced, make sure it was properly installed. If they do, then proceed with further diagnosing the problem.
How a hot-wire air flow sensor works A hot-wire mass air flow sensor has a small electrically heated wire hot wire. Refer to in Wiring Systems. Before replacing the sensor, however, the rest of the circuit should be checked for proper operation. The pots have 3 terminals. The vertical white line indicates the trigger point for the recording. It may take a few minutes for the condition to improve. Don't let the fact that you don't have the appropriate tools discourage you.
The certified mechanic will also charge you a high price, but once you give them your car you can rest assured that whatever problem your car is gone. P0102 is a very common trouble code in the Chevy Silverado. If the air filter has been improperly installed, then reinstall it properly. If weather information is the only available source, a rule of thumb is to subtract about 1 in. Low mass air flow readings do not mean the sensor is bad. Third, the symptoms mimic among other possibilities those of a vehicle suffering from low fuel pump output coupled with slightly leaking injectors or an overly active canister purge system.
If it doesn't, refer to the procedures in the following paragraph now. The numbers below refer to the step numbers on the diagnostic table. Symptoms: The engine computer uses the mass air flow sensor signal to determine how much fuel to inject. Wiggling the wiring harness with the engine running is a good way to test this theory. This slows the information coming from the component back to. Let's start with Ford vehicles, for a couple of reasons.
Without knowing how much air is really getting into the engine, P0102 will be thrown. I wouldn't treat both of them. Double the resistor size or even triple it, and you will find the device is much less sensitive. This will aid in locating a short to another 5. The amount of air entering the boot through this crack is not measured by the sensor, therefore the airflow sensor reads a much lower amount of air flow than actually is. If the code comes back, it may be necessary to replaced the mass air flow sensor. If it improves, it means the sensor was faulty.
How the mass air flow sensor is tested In modern cars, the only way to test the mass air flow sensor is with a scan tool. We will cover exactly what that means and potential fixes for it below. As you can see in the photo in the image viewer. Anything that acts like insulation to the hot wire will cause this type of issue. The second technique is to buy a Mass Air Flow sensor cleaner spray from a nearby auto store and use it to clean the sensor. Is there a way to check the mass air flow sensor readings at home? Just because your truck falls within the criteria doesn't mean you actually have a failed part.
A large discrepancy here—say, more than 2 in. Finally, the should also be checked to see if it is clogged — this can happen on some vehicles and lead to the P0101 code being produced. Such as solenoids, relays, and motors. The other outside terminal connects to ground, via the resistor. Usually, best practice dictates starting with the simplest and least expensive repair first. Additional repair tips will depend on the particular make and model of your vehicle.