Question about Kenmore 3.8 cu. ft. HE3 Front Load Washer
Hi. I read your responses to the same problem that I am having. I have the back of my washer off and am not sure what the pressure sensor manifold looks like. Could you describe it so I can try to clean it out? If that doesn't work, I'll replace the pump. Thanks!
There is a thin tube running from the sensor switch down to the pump area, this is the pressure tube. Pull this out carefully after un-clipping from the top, blow thru this, the air shd go thru, or it is blocked. Check for breaks in tube. This tube checks your water level in machine. Refit tube carefully when block if any is cleared.
If you have a similar tube you can fit it above to the sensor switch and blow thru it, you should hear a click when u blow, if you do, your pressure switch is working fine.
Pl rate if helped.................
Posted on May 30, 2008
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Posted on Jan 02, 2017
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OPERATION The Manifold Absolute Pressure (MAP) sensor, used on 1996-99 vehicles, measures the changes in intake manifold pressure which result from engine load/speed changes, and converts this information to a voltage output. The MAP sensor reading is the opposite of a vacuum gauge reading: when manifold pressure is high, MAP sensor value is high and vacuum is low. A MAP sensor will produce a low output on engine coast-down with a closed throttle while a wide open throttle will produce a high output. The high output is produced because the pressure inside the manifold is the same as outside the manifold, so 100 percent of the outside air pressure is measured.
The MAP sensor is also used to measure barometric pressure under certain conditions, which allows the PCM to automatically adjust for different altitudes.
The MAP sensor changes the 5 volt signal supplied by the PCM, which reads the change and uses the information to control fuel delivery and ignition timing.
TESTING See Figures 1 and 2
Fig. Fig. 1: Manifold Absolute Pressure (MAP) sensor circuit
When pumping up and releasing the vacuum, check to make sure the voltage readings are smooth. When applying vacuum to the sensor, the change in voltage should happen instantly. A slow change in voltage could point to a faulty sensor.
Fig. Fig. 2: MAP sensor voltage specifications
REMOVAL & INSTALLATION
3.8L (VIN K) Engine
See Figure 4
On these engines, the MAP sensor is mounted to the PCV valve cover.
Fig. Fig. 4: On the 3.8L (VIN K) engine, the MAP sensor (1) is mounted in the PCV valve cover (2)
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