Question about 2002 Mazda Protege

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99 Mazda Protege 105000 miles. To change the pre catalytic Oxygen Sensor Is it necessary to take the heat shield off first?

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No you just need an O2 sensor socket you should be able to get one at your local parts house.

Posted on Aug 18, 2009

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How many o2 sensors on a 99 Cadillac catera


Four .
Heated Oxygen Sensor (HO2S Bank 1 Position 1)
Located in RH front pipe of the exhaust catalytic converter
--
Engine Controls Connector End Views in Engine Controls
Heated Oxygen Sensor (HO2S Bank 1 Position 2)
Located in RH rear pipe of the exhaust catalytic converter
--
Engine Controls Connector End Views in Engine Controls
Heated Oxygen Sensor (HO2S Bank 2 Position 1)
Located in LH front pipe of the exhaust catalytic converter
--
Engine Controls Connector End Views in Engine Controls
Heated Oxygen Sensor (HO2S Bank 2 Position 2)
Located in LH rear pipe of the exhaust catalytic converter

Sep 21, 2015 | Cadillac Cars & Trucks

1 Answer

I have a 2001 mazda protege (1.6) and I believe the catalytic converter is clogged. It looses power going uphill. There are no manuals published for this year(2001), so I'm only guessing that the catalytic...


Don't be presumptuous, replace the EGR valve and put your cat back together. Losing power on am incline/hill means but one thing, the Exhaust Gas Recirculation valve is bad.

Jul 11, 2017 | 2001 Mazda Protege

2 Answers

Where is the bank 1 sensor 1 o2 sensor located in a 2006 hyundai sontata gls v6?


The bank has to do with which side of the engine. The 'Sensor 1' indicates that it is upstream of the catalytic converter.

Heated Oxygen Sensor Removal & Installation Heated Oxygen Sensor (Front) (2.4L) hyundai-04-24-5822.gif

Heated Oxygen Sensor (Rear) (2.4L) hyundai-04-24-5823.gif

Heated Oxygen Sensor (Bank 1/Sensor 1) (3.3L) kia-04-00-5213.gif

Heated Oxygen Sensor (Bank 1/Sensor 2) (3.3L) kia-04-00-5214.gif

Heated Oxygen Sensor (Bank 2/Sensor 1) (3.3L) kia-04-00-5215.gif

Heated Oxygen Sensor (Bank 2/Sensor 2) (3.3L) hyundai-04-33-5855.gif

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Jan 13, 2011 | 2006 Hyundai Sonata

1 Answer

I have a 07 f150 4.6L V8 and I need to replace the Bank 1 sensor 1 oxygen sensor but cant figure out which sensor it is since there are 4 sensors. Where can I find a picture of the location?


Heated Oxygen Sensor (HO2S)- The Bank 1 Sensor 1 tells me that it's an upstream O2 sensor. The larger the number the further down the line of the exhaust it is. Removal & Installation 4.2L Engine ford-04-42-2750.gif
To Remove:
  1. Raise and safely support vehicle.
  2. Disconnect battery ground cable.
  3. Detach electrical connector from right inner fender splash shield (if necessary).
  4. Remove right inner fender splash shield (if necessary).
  5. Disconnect heated oxygen sensor electrical connector.
  6. Remove heated oxygen sensor.
To Install:
  1. Apply anti-seize lubricant to heated oxygen sensor threads.
  2. Install heated oxygen sensor. Torque to: 34 ft-lbs (46 Nm)
  3. Connect heated oxygen sensor electrical connector.
  4. Install right inner fender splash shield (if necessary).
  5. Attach electrical connector to right inner fender splash shield (if necessary).
  6. Connect battery ground cable.
  7. Lower vehicle.
4.6L and 5.4L Engines ford-04-46-2751.gif
To Remove:
  1. Raise and safely support vehicle.
  2. Disconnect battery ground cable.
  3. Disconnect heated oxygen sensor electrical connector.
  4. Remove heated oxygen sensor.
To Install:
  1. Apply anti-seize lubricant to heated oxygen sensor threads.
  2. Install heated oxygen sensor. Torque to: 34 ft-lbs (46 Nm)
  3. Connect heated oxygen sensor electrical connector.
  4. Connect battery ground cable.
  5. Lower vehicle.

Nov 07, 2010 | Ford F-150 Cars & Trucks

1 Answer

How many o2 sensors are on a 1995 monte carlo


REMOVAL & INSTALLATION Fig. 1: The oxygen sensor is threaded into the exhaust manifold — 2.2L engine 88004g45.gif
Fig. 2: View of the oxygen sensor mounting — 2.3L engine 88004g49.gif
Fig. 3: Oxygen sensor location — 2.5L engine 88004g46.gif
Fig. 4: Heated Oxygen Sensor (HO2S) location — 1995 3.1L engine shown 88004g47.gif
Fig. 5: Oxygen sensor location — 3.4L engine shown 88004g48.gif
Fig. 6: This 3.8L engine has one HO2S mounted on the exhaust manifold . . . 88004g51.gif
Fig. 7: . . . and a second HO2S mounted after the catalytic converter 88004g50.gif
WARNING
The sensor uses a permanently attached pigtail and connector. This pigtail should not be removed from the sensor. Damage or removal of the pigtail or connector could affect the proper operation of the sensor. Keep the electrical connector and louvered end of the sensor clean and free of grease. NEVER use cleaning solvents of any type on the sensor! NOTE: The oxygen sensor may be difficult to remove when the temperature of the engine is below 120°F (49°C). Excessive force may damage the threads in the exhaust manifold or exhaust pipe.
  1. Disconnect the negative battery cable.
  2. For 3.1L engines, unbolt the coolant recovery reservoir (do not disconnect the hoses) and position aside. Unfasten the engine torque strut bolt, then rotate the engine forward.
  3. If necessary for access, raise and safely support the vehicle, remove the intermediate pipe and heat shield.
  4. Unplug the electrical connector and any attaching hardware. NOTE: Some late model vehicles utilize two oxygen sensors.
  5. Remove the sensor from the vehicle. For some vehicles, it may be necessary to use tool J 29533/BT-8127 or equivalent to remove the sensor. To install:
  6. Coat the threads of the sensor with a GM anti-seize compound, part number 5613695, or its equivalent, before installation. New sensors are pre-coated with this compound. NOTE: The GM anti-seize compound is NOT a conventional anti-seize paste. The use of a regular paste may electrically insulate the sensor, rendering it useless. The threads MUST be coated with the proper electrically conductive anti-seize compound.
  7. Install the sensor and tighten to 30 ft. lbs. (40 Nm). Use care in making sure the silicone boot is in the correct position to avoid melting it during operation.
  8. Engage the electrical connector.
  9. If necessary, install the heat shield, attach the intermediate pipe, then carefully lower the vehicle.
  10. On 3.1L engines, rotate the engine back to its original position, then install the torque strut bolt. Position and fasten the coolant recovery reservoir.
  11. Connect the negative battery cable.
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Sep 13, 2010 | 1995 Chevrolet Monte Carlo

2 Answers

I have an 1998 Chevy Blazer and need to change the catalytic converter, are the flange bolts welded and can i cut them


Catalytic Converter Removal & Installation 2.2L Engine To Remove:
Catalytic converter 2.2L engine gm-03-22-734.gif

  1. Raise and safely support the vehicle.
  2. Disconnect the heated oxygen sensor (HO2S) electrical connector.
  3. Remove the exhaust manifold pipe flange mounting nuts from the catalytic converter.
  4. Remove the catalytic converter flange mounting nuts from the muffler.
  5. Remove the catalytic converter from the muffler.
  6. Remove the catalytic converter from the rear hanger bracket insulator.
  7. Remove the catalytic converter.
  8. Remove the (HO2S) from the catalytic converter.
To Install:
  1. Install the (HO2S) to the catalytic converter.
  2. Install a new gasket and the catalytic converter to the muffler.
  3. Install catalytic converter to the catalytic converter hanger.
  4. Install the catalytic converter flange mounting nuts to the muffler flange.
    • Tighten to 26 ft lbs (35 Nm).
  5. Install the catalytic converter flange mounting nuts to the exhaust manifold pipe flange.
    • Tighten to 26 ft lbs (35 Nm).
  6. Connect the heated oxygen sensor (HO2S) electrical connector.
  7. Lower the vehicle.
------ Catalytic Converter Removal & Installation 4.3L Engine To Remove:
  1. Raise and safely support the vehicle.
  2. Raise and support the transmission.
  3. Remove the transmission support
  4. Disconnect the left and right pre-converter heated oxygen sensor (HO2S) electrical connector.
  5. Disconnect the post-converter (HO2S) connector. Muffler flange and gasket gm-03-43-731.gif

  6. Remove the catalytic converter flange mounting nuts from the muffler.
  7. Remove the catalytic converter from the muffler.
  8. Remove the exhaust manifold flange mounting nuts from the catalytic converter. Catalytic converter 4.3L engine gm-03-43-735.gif

  9. Remove the catalytic converter from the support bracket insulator.
  10. Remove the catalytic converter and gaskets.
  11. Remove the heated oxygen sensor.
To Install:
  1. Install the heated oxygen sensors as needed.
  2. Install a new gasket and the Install the catalytic converter to the support bracket insulator.
  3. Install the catalytic converter to the exhaust manifold flange. Install the mounting nuts.
    • Tighten to 39 ft lbs (53 Nm).
  4. Using a new flange gasket, install the catalytic converter to the muffler. Install the mounting nuts.
    • Tighten to 30 ft lbs (40 Nm).
  5. Connect the left and right pre-converter heated oxygen sensor (HO2S) electrical connectors.
  6. Connect the post-converter (HO2S) electrical connector.
  7. Install the transmission support.
  8. Lower the transmission.
  9. Lower the vehicle.
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It looks like you can cut them and replace them with new bolts and nuts.prev.gif next.gif

Sep 05, 2010 | 1998 Chevrolet Blazer

1 Answer

Hi! my name is Carlos I Have a Mazda Protege 99


Check the plugs for spark, pull one out and lay it on a metal part with the wire attached,, crank it over and see if it sparks, if yes, then squirt some fuel in the throttle and see if it fires, narrow it down to something. Check the oil, the electrical sensor in the header is an oxygen sensor, it will not effect the engine, If you don't have a spark, pull the coil pack off the old engine and bolt it on the new one. Check it out.

Jun 22, 2010 | 1999 Mazda Protege

1 Answer

Oxygen sensor location in mazda 2001 protege


The front O2 sensor is located at the bottom of the heat shield just before you get to the exhaust. It has a wire connected to it. You will have access to this from the top of the car.You may need a O2 sensor tool that you can borrow from most major auto parts retailer. Disconnect the battery first then unplug the sensor. Using the O2 socket remove the sensor. The sensor should come with a packet of anti seize, apply it to the threads and install it. Plug the sensor back up and connect the battery and you should be done.

Apr 20, 2010 | 2001 Mazda Protege

1 Answer

Need to replace 2001 Mazda Protege Oxygen Sensor before the catalytic converter... Not sure how to do this or even where it's located. Can anyone tell me how (and where)? Please be as detailed as possible...


The front O2 sensor is located at the bottom of the heat shield just before you get to the exhaust. It has a wire connected to it. You will have access to this from the top of the car.You may need a O2 sensor tool that you can borrow from most major auto parts retailer. Disconnect the battery first then unplug the sensor. Using the O2 socket remove the sensor. The sensor should come with a packet of anti seize, apply it to the threads and install it. Plug the sensor back up and connect the battery and you should be done. Good luck.

Nov 01, 2009 | 2001 Mazda Protege

1 Answer

Wiring


2002 PCED OBDII-Villager SECTION 1: Description and Operation Catalyst and Exhaust System Overview The catalytic converter and exhaust system work together to control the release of harmful engine exhaust emissions into the atmosphere. The engine exhaust gas consists mainly of nitrogen, carbon dioxide and water vapor. However, it also contains carbon monoxide, oxides of nitrogen, hydrogen, and various unburned hydrocarbons. Carbon monoxide, oxides of nitrogen, and hydrocarbons are major air pollutants, and emission into the atmosphere must be controlled.
The exhaust system consists of an exhaust manifold combined with a pre-catalytic converter, upstream heated oxygen sensor (HO2S11), (located just in front of the pre-catalytic converter), three way catalytic converter (TWC), downstream heated oxygen sensor (HO2S12) (located in front of the TWC), a muffler and an exhaust tailpipe.
Heated Oxygen Sensors The Villager is equipped with both upstream and downstream heated oxygen sensors (HO2S) (Figure 1). The upstream heated oxygen sensor (HO2S11) is used to control engine fuel flow. The sensor detects the concentration of oxygen in the exhaust gas and sends a signal to the powertrain control module (PCM). In a rich condition, the HO2S will output a voltage of 0.6 volts or greater, and in a lean condition a voltage of 0.4 volts or less will be output.
The downstream heated oxygen sensor (HO2S12) is used primarily for monitoring the efficiency of the catalytic converter system. The HO2S12 works in a similar way to the HO2S11 but only indicates to the PCM that the catalyst is functioning properly. In the event that the HO2S11 fails, fuel control will be switched over to the HO2S12 and the malfunction indicator lamp (MIL) will be illuminated. This allows the vehicle to operate with fewer emissions, even with a sensor failure.
Figure 1: Typical Heated Oxygen Sensor (HO2S)

Feb 21, 2009 | 2002 Mercury Villager

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