Question about 1998 Mazda Millenia

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1999 Mazda Millenia Check Engine light

We have had this checked seveal times and they say it is the knock sensor. How do I get the light to turn off? Where is the knock sensor located? How does it effect the car if it is bad?

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It picks up nois inside of the motor it is located in the side of the block under the intake sometimes right above the starter

Posted on Feb 21, 2009

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Where are O2 sensor located on 1998 mazda millenia 2.5 engine?

Posted on Apr 23, 2013

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Can you show me the picture of a knock sensor for harrier 1mz engine en how I can repair it


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Jan 07, 2016 | Cars & Trucks

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Check engine for knock sensor lighting up it says short/low bank 1


Check the wiring harnesses for bare or brittle spots. If none are found replace the spark plugs, all of them and spark plug wires. I know these are still fairly new but that is the next step. If you have over 60,000 miles on the vehicle it could be an issue with the timing chain but my experience tells me replace the crank Position sensor first if none of the other steps yield any results. Because these vehicles come with the power train warranties they do you can't really trust the Dealer Mechanics because they will do anything they can to prolong this to get the vehicle out of warranty.

Nov 03, 2011 | 2003 Nissan Murano

2 Answers

My Jeep Liberty Has a 3.7 L V6, it has problems starting. A code popped up that was P0325? What does this code mean?


CARB (California Air Resources Board) has a consistent policy regarding monitoring knock (Ks) sensors but vehicle manufacturers don't have a consistent way of using knock sensor circuitry. There are generally two methods that manufacturers have for using the knock sensor.
In the first design, which is found in most vehicles, the knock sensor plays an active role in controlling ignition timing. In this system, the PCM is advancing ignition timing until knock occurs and then retards timing slightly. This system runs on the verge of engine knock at all times. In this system the function of the knock sensor circuit is critical. If the sensor malfunctioned, precise ignition timing control could not be achieved.

A "dead" sensor circuit would not be able to detect actual knock, timing would be overly advanced, and NOX exhaust emissions would increase. For this reason, manufacturers that use the knock sensor in this manner are required to monitor this sensor and light the MIL light when a malfunction is detected.

In the second design, the knock sensor plays a very passive role and is really only on the engine for protection purposes. The various engine sensors send their information to the PCM to determine ignition timing. The PCM uses this information to control the ignition timing based on look-up tables stored in its memory. If ignition knock is detected, the PCM will take action and ****** the timing a few degrees. This type of control is generally used to control spark knock caused by changes in fuel octane.

Used in this way, the knock sensor is less critical to emissions and may not even have a measurable emission impact. Unlike the first design, a "dead" knock sensor in this system will have little to no effect on the operation of the engine. Manufacturers that use this design are not required to monitor the sensor under EPA OBDII regulations and will not turn on the MIL if the P0325 DTC is set.
Remember, this sensor does not change the operation of the engine. The customer will not notice any change in the way the vehicle operates. The knock sensor system has a one trip detection logic and WILL NOT turn on the MIL or store Freeze Frame data.

How to Diagnose P0325

Most technicians know how this type of sensor operates. Its element produces a voltage when the sensor picks up a vibration, usually caused by engine detonation.Technicians then check the ohmic value of the sensor.
Maybe this was of some help.Your valuable feedback would be appreciated.Thanks for choosing Fixya.

Jun 09, 2011 | 2003 Jeep Liberty

1 Answer

Location of knock sensor on a 1998 Saturn 4 cylinder


A knock sensor is threaded into the engine block and is supposed to sense when the engine starts to ping or spark knock and reduces the ignition timing accordingly.The knock sensor is located on the side of the engine.
  • Turn the ignition OFF.
  • Raise the vehicle.
  • Disconnect the knock sensor harness connector.
  • Remove the knock sensor attachment bolt and the knock sensor.

  • Important: The larger metal contact area of the knock sensor MUST be toward the engine block. DTC P0327 may result if the sensor is installed backwards.

  • Install the knock sensor and attachment bolt with the larger metal contact area toward the engine block.

  • Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

  • Sep 22, 2010 | 1998 Saturn SL

    1 Answer

    1989 K1500 GETTING CODE 43 NEW ENGINE REPLACED KNOCK SENSOR AND THE CONTROL MODULE.


    The 43 is the knock sensor, the wires must be broken or fused together to continue to get the same code.
    Testing the sensor for the DIY Knock sensors detect detonation ( knocking ) by reacting to the ping by retarding the ignition timing so you will need a timing light for this. connect the timing light and locate the knock sensor, ( many are on the intake manifold ) now use a metal object to tap ( not too hard and not on the sensor itself ) on the intake manifold ( light tapping should suffice ), if the sensor is functioning you will see the timing ******. If the timing does not ****** you will need to check voltage across the terminals of the knock sensor connector.
    Though that excerpt says your sensor is in the intake,I believe yours is in the water drain hole for the engine block.
    I also found that most shops are to replace the wire to the knock sensor because of so much failure of those wires because of heat.
    Enough information?Repost if this doesn't help and we can look at some other things to try.

    Jan 17, 2010 | 1996 Chevrolet C1500

    1 Answer

    Got a 2000 millenia s it knocks sounds like its


    sounds like the water pump bearing is worn out and has detroyed the water pump shaft seal.
    coolant is leaking thru the seal area ,due to the bearing worn out --hence throwing the water pump pulley out of alignment.
    The water pump pulley runs of the timing belt.---hence the knocking --either from the pulley or belt chaffing against the timing cover or even throwing the engine timing a few degrees off.
    Need to replace water pump and timeing belt and anything else that may be damaged.
    That's why, when ever you do a timing belt always do the water pump too.

    Dec 28, 2009 | 1999 Mazda Millenia

    1 Answer

    01 Mazda Millenia 2.5L check engine light


    sounds like its a different sensor causing problem. could be TPS SENSOR OR MAP SENSOR .

    Dec 06, 2009 | 2001 Mazda Millenia

    1 Answer

    I have a 1997 Mazda Millenia bought it used. Anyway like 2 days ago a light switch came on (ACS) I don't know what that is and it's been wanting to stall out. Do you have any idea what it might be?


    go to autozone & check the code for free mazda millenia they all have problem with the check engine light problem even though you bought all new parts it will still show , but never replace the cat converter most cause the engine light is the sensor only.

    Jul 04, 2009 | 1997 Mazda Millenia

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