Question about 2003 Mazda MPV

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ECT Sensor location on MPV 2003

I need to change the ECT Sensor on my MPV 2003 but I am unable to find it!, help please

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Find the thermostat housing a little left of the bottom of the battery base plate. It is a junction point of three coolant hoses. Then, diagonally to the upper left about 2.5 inches you'll find the L-shaped sensor. Unclip the wire feed from the top part of the sensor. Then turn the piece to the left and pull it out. Have the other one ready quick as coolant will come out fast so place a catch basin under the car to catch the coolant. I just did mine an hour ago and it was easy.

Danny K

Posted on May 12, 2009

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It will be in your main fuse box under the hood, the lid should be labeled showing you what is what.

Posted on Nov 26, 2008

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NOTE Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

  1. Turn OFF the ignition.
  2. Drain the coolant system.
  3. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.
  4. Carefully back out the ECT sensor.

b08e1af.gif

Fig. Coolant temperature sensor for the 2.2L Engine




To install:

  1. Coat the threads only with sealer P/N 9985253 or an equivalent.
    NOTE Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
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0996b43f8020330c.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart-2001 MPV

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0996b43f8020330f.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart- 2002-06 MPV

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