Where is the MAP sensor on a 2004 Honda Civic?
intake manifold
2 Answers. Dicksen Mah , The MAP sensor on the Honda 1.7 engine is stuck in the intake manifold right beside the throttle body(driver side) held by 1 bolt. Remove plastic filter air ducting from above throttle body.
What happens if the MAP sensor on a Honda Civic fails?
Since the MAP sensor’s vacuum pressure input is used to calculate engine load and thus fuel injection and timing advance when it fails, the PCM won’t be able to keep your 1.6L Honda Civic running smoothly. You’ll see one or more of the following symptoms:
How many wires does a Honda Civic sensor have?
If you have already identified the manifold absolute sensor on your Honda Civic, you know that its connector has 3 wires coming out of it. Each one of those wires (circuits) has a specific job to do.
How can I check if my MAP sensor is working?
Sensor If the sensor is installed correctly, both to the intake manifold and electrically, use a vacuum gun and a voltage meter or a scan tool to check MAP sensor output. Then you will have to look up a chart to mete voltage against full vacuum and no vacuum.
What does speed density mean on a Honda Civic?
Your Honda Civic’s fuel system is a speed density type. Which, in plain English means that your Honda’s fuel injection computer needs to know the engine speed and the engine load to inject the proper amount of fuel (advance ignition timing, etc.).
How do you test a MAP sensor on a car?
How to Test a MAP Sensor When testing a MAP sensor, first make a preliminary check. The sensor connects to the intake manifold with a rubber hose, depending on your particular application; otherwise it connects directly to intake. When problems arise, it’s more likely that the vacuum hose has failed.
Can a bad MAP sensor cause engine failure?
MAP sensor on footwell inside engine compartment. A bad manifold absolute pressure (MAP) sensor can upset fuel delivery and ignition timing. Depending on your vehicle model, your engine might experience one or more of these performance problems: However, these symptoms are not exclusively symptoms of a failed MAP sensor.
What should the voltage be on a MAP sensor?
Your voltage reading should be between 4.6 and 5 volts. Apply 5 in-Hg of vacuum to the sensor. The readout should be about 3.75 volts. Now apply 20 in-Hg of vacuum to the sensor. The voltage should be about 1 volts. Your readings may vary slightly, depending on altitude and current weather conditions.
Can a bad vacuum hose cause a bad MAP sensor?
For example, in many applications a leaking vacuum hose or a bad throttle position sensor (TPS) may cause a trouble code that points to a faulty MAP sensor. Troubleshooting the sensor is the only way to determine whether the sensor or part is actually bad. On some models, you only need to remove a couple of screws to get to the sensor.