Question about 2000 Mazda MPV

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2001 Mazda MPV upper front oxygen sensor change

Is there a way to get to and change out the upper front oxygen sensor on my 2001 Mazda MPV without removing the radiator and AC condenser?

It looks as if the engine will need to be removed or the radiator and condenser will have to be removed to get access to the sensor and change it.

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  • jcbarrozo Feb 21, 2009

    I tried removing the upper 02 sensor for my 2002 Mazda MPV from the botton using a J-lift and I still couldn't get perfect leverage to remove the sensor. It just seems to be too difficult to reach it up there even with the special tool. What type of tool exactly do I need and how do I do it.

  • Anonymous Mar 25, 2014

    Bank 1 and Bank 2 located

  • Anonymous Mar 25, 2014

    Bank 1 and Bank 2 locations

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I replaced this sensor about 6 months ago. (If this is the sensor that is located near the firewall on the exhaust manifold under the ignition coil.) The only way to easily replace it, is to remove the MAF and air filter assy. then remove the intake plenum, remove the ignition coil, and then you'll have access to the sensor. You'll need a sensor removal socket. If the socket slips around the hex of the sensor, then you'll need to use a regular deepwell socket and cut the cable from the top of the sensor, or use a combination wrench that will fit it.
The most difficult part of removing the intake plenum is getting the nut loose from the EGR valve. DO NOT just remove the two bolts holding it to the intake plenum. It will not line up correctly during re-assembly and may not seal tightly either.
This took about a Saturday to do. You'll need new plenum gaskets to replace the old. While your at it remove the throttle body and clean the carbon from the ports that lead to the EGR valve and replace that gasket as well. The gaskets will run about $30.

Posted on May 04, 2009

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No you don't have to move any of that you need a "crow foot" type oxygen sensor it looks like a short brake line wrench that you can put a 3/8 ratchet on it with an extension. This will help you to get this sensor out. Good Luck

Posted on Dec 30, 2008

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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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Jan 18, 2010 | 2000 Mazda MPV

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Jan 09, 2010 | 2000 Mazda MPV

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