Question about 2006 Mazda 3

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How do I change the ECT sensor on a 2006 Mazda 3 ?

Replace the ECT sensor.

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I think they are located in between sparkplugs 3 and 4 and are accessible by removing the gromit that the wiring goes through. You need to flick the wiring plug off with a small screwdriver then you can get to the sensor with s socket and extension.

Let me know if this helps
Cheers

Posted on Dec 31, 2012

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Here is the location if this is the 2.3L engine


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The ECT (Engine Coolant Temp sensor) should be located by the coolant thermostat housing or where the upper radiator hose connects to the engine. It screws in with a plug or small/short wire harness attached to it. -------------------------------- To replace ect sensor:---
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  2. Remove the intake manifold cover, if necessary.
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see fig below:--- techmecho.jpg

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It is directly at the back of the cam cover, more on the driver's side.Look down about 2-3 inches from the top of the cam cover and you will see it.


I believe a 21 or 22mm deep well socket is what you will need, and be careful you don't lose the small aluminum washer under it when you remove it.





TIM................

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0996b43f80203328.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart-2000 MPV

1 PCM 2 Mass air flow (MAF)/intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Fuel tank pressure sensor 5 Engine coolant temperature (ECT) sensor 6 Crankshaft position (CKP) sensor 7 Camshaft position (CMP) sensor 8 Knock sensor 9 Heated oxygen sensor (HO2S) (front, LH) 10 Heated oxygen sensor (HO2S) (front, RH) 11 Heated oxygen sensor (HO2S) (rear, LH) 12 Heated oxygen sensor (HO2S) (rear, RH) 13 EGR boost sensor 14 Power steering pressure (PSP) switch 15 Main relay


0996b43f8020330c.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart-2001 MPV

1 PCM 2 Mass air flow (MAF)/Intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Engine coolant temperature (ECT) sensor 5 Crankshaft position (CKP) sensor 6 Camshaft position (CMP) sensor 7 Knock sensor 8 Heated oxygen sensor (HO2S) (front, LH) 9 Heated oxygen sensor (HO2S) (front, RH) 10 Heated oxygen sensor (HO2S) (rear, LH)* 11 Heated oxygen sensor (HO2S) (rear, RH)* 12 EGR boost sensor


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

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