Question about 2000 Chevrolet Prizm

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2000 Prizm i purchased a Mass Air flow sensor. after my mechanic said that is the reason my check engine is on. can you assist me with installing it? i see you have a picture the the engine configuration but its to small for me to read it. does it make sense that running the a/c causes it to go on? because it has gone off a few times then when turning on the a/c and driving for a wile the check engine light turns back on (it might just be a coincidence dont know) any why i hope you can help me out, thank you

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  • Ezzy1984 Oct 30, 2008

    Thank you very much!

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2 Answers

Is that the same for a 1999 Prism?

Posted on Oct 30, 2008

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Hi...
Yes I can help you.
The Mass Air Flow sensor. Is located on left side of the Engine compartment.
If you follow the Big Hose comoing from the Throttle Body to the Air filter Housing.
Check the Hose for any Break down. or loose Clams, or any damage on the hose repair as need
On the BLACK BOX of the Air filter. is the Mass Air flow sensor.
Normally mounted with 2 small screw. Just Remove the Screw them remove the sensor.
If the Air filter need change due.
Remove the Negative Battery terminal to Clear the LIght.
If the Light come back. Give me the Code number and I will help you.

OK.. The coment about when you turn on the a/c. it make sense.
Because when you turn the a/c on, the computer command more or less Idle. Based on RPM. TPS. ECT. And AIR FLOW.

OK.. I hope this help on your problem.
Thank you for use fixya...

Posted on Oct 05, 2008

  • Juan Guillen Oct 30, 2008

    Guest. Yes is the Same for the 1999.

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SOURCE: 2000 Prizm

If you go to Auto Zone or Advance Auto they can point it out.
If you saw a picture then that is small, you can copy and paste it on your computer and enlarge it and brighten it to see it clearly.

Posted on Mar 16, 2009

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Locating MAF on 2001 alreo


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P0102 - Mass Air Flow Sensor Circuit Malfunction

The mass air flownissan-maxima-maf-sensor.jpg or MAF sensor is placed in the intake air duct between the air filter and the engine intake manifold. The MAF sensor measures the amount of intake air flow. The MAF sensor converts the air flow measurement into a voltage or frequency signal, with the voltage or frequency changing proportionally to the amount of air flow. The air flow sensor signal is monitored by the engine computer (ECM). The engine computer (ECM) uses the mass air flow signal to know the engine load and to calculate the proper amount of fuel injected. If the signal from the mass air flow sensor is out of expected range, the ECM detects a fault and sets the code P0100. For example, the mass air flow sensor signal could be higher than expected when the engine is not running or lower than expected with the engine running. A car with the code P0100 may have some driveability issues, such as stalling, lack of power, surging, hesitation, etc. In some cars, the code P0100 can cause the fail-safe mode where the engine speed would be limited to 2,500 - 3,000 rpm.
If there are other trouble codes present, they might need to be looked at first. Checking the freeze frame may help, as it may contain some important information. The freeze frame is a snapshot of the engine parameters at the moment when the fault was detected. The freeze-frame may show whether the vehicle was running or stopped, whether the air-fuel ratio was lean or rich, was the engine was cold or warmed up at the time of the malfunction. Read more about the freeze frame.


Read more about mass air flow sensor.

What could cause the code P0100:
- faulty or contaminated mass air flow sensor
- open or short in the mass air flow sensor electrical circuit
- open or short in the sensor power or ground circuit

- other electrical problem with the MAF sensor wiring, (corroded wires, bent terminals, bad ground connection, burned fuse, etc.
- vacuum leaks
- restricted air flow at or before the air filter
- wrong air flow sensor installed
- problem with ECM





P0102 - Mass Air Flow Sensor Circuit Low

The mass air flow or MAF sensor measures the amount of air entering the engine. The engine computer (ECM) uses the mass air flow signal to calculate the amount of fuel injected (read more how the MAF sensor works below). The code P0102 is set when the signal from the mass air flow sensor is lower than expected. Often a car may exhibit some driveability symptoms, such as lack of power, surging, hesitation on acceleration, hard starting, pinging (detonation), or rough idle when started cold. Often the codes P0171 or P0174 could also be stored along with the code P0102, as the incorrect air flow signal can cause the engine to run lean. The codes P0171 and P0174 indicate a lean condition. Checking the freeze frame might help in the diagnostic process. The freeze frame is stored in the ECM along with the trouble code. The freeze frame contains some recorded parameters (e.g. vehicle speed, engine temperature, fuel trim) at the moment when the fault was detected. The freeze frame can also be accessed with a scan tool.



What could cause the code P0102
- faulty or contaminated mass airflow sensor
- debris blocking the air flow at the mass air flow sensor
- unmetered air leaking past the MAF sensor (vacuum leaks)
- PCV system vacuum leaks
- restricted or collapsed intake air duct
- dirty or restricted air filter
- restricted air screen before the air filter
- improper application of aftermarket components (e.g. cold intake, modified air filter, etc.)
- wrong air flow sensor installed
- electrical problem with the MAF sensor wiring, connector, power supply or ground.
- problem with ECM
- in some cases other issues with the fuel injection system like a clogged catalytic converter or a faulty manifold absolute pressure sensor (MAP) can also cause the code P0102.




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Thanks for using FixYa. The BUICK Regal Mass Air Flow sensor is usually installed in the intake air duct between the air filter and the throttle body mounted on the intake manifold. Also check the throttle body for mass air flow sensors location.
On mass air flow sensors with a sense wire, this wire can become contaminated with dust particles. These particles can be removed with automotive solvents that are safe for the use on mass air flow sensors. Before replacing the mass air flow sensor check for air leaks in the connecting air ducts and intake manifold. These leaks can cause similar symptoms as a malfunctioning mass air flow sensor.

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Please do accept the solution if the issue is resolved or else revert for further assistance.

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If you go to Auto Zone or Advance Auto they can point it out.
If you saw a picture then that is small, you can copy and paste it on your computer and enlarge it and brighten it to see it clearly.

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I had a very similar problem with my prizm, and it was mass air flow sensor. They cleaned it out, and now shes back to running good! It could also be an O2 sensor, or a regulator.

Good luck!

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