Question about 2002 Kia Sedona

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Engine knock the engine is knocking

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  • Joseph Petric
    Joseph Petric May 11, 2010

    Did this start after a recent fuel up? Try using QUALITY mid-grade gas or higher. I use 88 Octane or greater, Chevron or Phillips 66 ONLY.

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If your engine's knocking is indeed internal damage, you have worn/damaged bearings in either the mains or connecting rods.

Repair requires engine partial overhaul, and should be performed by a qualified service technician.

Posted on Dec 26, 2009

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2002 KIa Senoda engine. If an engine is knocking it can be that the engine has low idle in fuel pump.because of some reasons that only less gas can enter the engine. that is why you have to adjust the fuel idle until the engine will not knock .

Posted on Jul 28, 2009

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SOURCE: Knocking in engine

if your noise is only heard when using the a/c, then the most likely cause is going to be the a/c clutch. that is the part of the compressor the the belt drives, it activates/deactivates a/c compressor
they are available as a seperate unit i believe
regards roger

Posted on Jun 24, 2010

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1 Answer

Knocking rattling noise from engine appeared while driving loss lil power running but loud knocking in engine


You didnt state vehicle however if the engine knocks the knock sensor will back off the timing thinking its detination not an actual knock if its knocking loudly stop driving it, something is going to let loose

Oct 06, 2015 | Cars & Trucks

2 Answers

What is the knock sensor function for


the knock sensor adjusts the timing, advances/retards the in case the engine : knocks , retards or diesels

Jan 09, 2015 | Cars & Trucks

1 Answer

My Infiniti Q45 Has a knock sensout that is out..Left bank. Would this cause my engine to have a loud knocking sound? Sometimes it knocks and other times it's quiet. I took it to a mechanic and he t


I would go with the engine being bad.
A knock sensor only sends a signal to the engine computer when there is a vibration or noise like a spark knock. The computer then adjusts spark timing to compensate.
If the engine is knocking such as a bearing knock, the sensor will be activated.

Jan 31, 2014 | Infiniti Cars & Trucks

1 Answer

Emission code P0326


P0326 - Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor) High Voltage
Knock sensors are used to detect engine pre-detonation (engine knock or ping). The knock sensor (KS) is usually a two wire sensor. A 5 volt reference is supplied to the sensor and there is a signal return from the knock sensor to the PCM (powertrain control module). The sensor signal wire informs the PCM when a knock occurs and in what degree of severity. The PCM will ****** the spark timing to avoid pre-detonation. Most PCMs have the ability to learn spark knock trends in the engine during normal operation.

If the PCM determines that the knock is out of the ordinary or that the noise level is abnormally high, P0326 may set. If the PCM senses that the knock is severe and cannot be eliminated by retarding the spark timing, P0326 may set. Keep in mind that knock sensors cannot distinguish between a knock from pre-detonation or one from engine problems.

Symptoms of a P0326 DTC may include:
MIL (Malfunction Indicator Lamp) illumination
Audible knocking from the engine compartment
Pinging from engine under acceleration

Potential causes of a P0326 code include:
Knock sensor connector is damaged
Knock sensor circuit is open or shorted to ground
Knock sensor circuit is shorted to voltage
Knock sensor has failed
Moisture in knock sensor connectors
Incorrect fuel octane
PCM has failed

Possible Solutions:
If an engine knock can be heard, fix the source of the mechanical problem first then retest. Make sure the proper octane of fuel was used in the engine. Using lower octane fuel than what is specified can cause a ping or pre-detonation and may cause P0326.

Unplug the knock sensor and check for water or corrosion in the connector. If the knock sensor has a seal, verify there is no coolant from the engine block fouling the sensor. Repair as necessary.

Turn ignition to run position with engine off. Ensure that 5 Volts are present at the KS connector. If there is, check for proper resistance between KS terminal and engine ground. You will need a vehicle specification for this. If resistance is out of specification, replace the knock sensor. If resistance is normal, plug KS back in and idle the engine. Using a scan tool in datastream, observe KS value. Does it indicate a knock is present at idle? If so, replace the knock sensor. If the knock sensor shows no knock at idle, then tap on the engine block while observing the knock signal. If it doesn't show a signal that corresponds with the taps, replace the knock sensor. If it does, verify the knock sensor wiring isn't routed next to ignition wires. If there was no 5 volts present at the knock sensor connector while unplugged with KOEO (Key on engine off) then go back to the PCM connector. Turn ignition off and clip the knock sensor 5 volt reference wire in a location that is easy to repair (Or remove the wire from the PCM connector). With KOEO, check for 5 volts on the PCM side of the clipped wire. If 5 volts isn't present, suspect a bad PCM. If 5 volts IS present, repair short in 5 volt reference circuit.

Since the reference circuit is a shared circuit, you will need to check all engine sensors that are fed a 5 volt reference. Unplug each sensor one at a time until the reference voltage returns. When it returns the last sensor you plugged in is the shorted sensor. If no sensors are shorted, check the wiring harness for short to voltage on reference circuit.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Feb 15, 2012 | Cars & Trucks

1 Answer

I have a code p0325 knock sensor 1, circuit bank 1 or single sensor problem


A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block.

This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.

Symptoms: You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms.

Causes: A code P0325 most likely means one or more of the following has happened:
* The knock sensor is faulty and needs to be replaced
* There is a wiring short/fault in the knock sensor circuit

Possible Solutions
* Check the resistance of the knock sensor (compare it to factory specs)
* Check for broken/frayed wires leading to the sensor
* Replace the knock sensor


Test it and tell us news.

Mar 15, 2011 | 1999 Nissan Maxima

1 Answer

Code p0325


P0325 OBD-II Trouble Code

Technical Description: Knock Sensor Circuit Malfunction

What does that mean?A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.

Hope this helps.

Feb 09, 2011 | 2004 Dodge Stratus

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

    2 Answers

    Service engine light


    Your not going to here any knock from the engine the knock sensor detects detonation which is not detectable with the human ear. if you want to test the knock sensor you can tap the side of the block the engine should stumble for a couple of seconds if it does not change then the way the engine runs then the knock sensor is defective or hase buildup iside the engine and you will need to do a top engine clean. if you want instructions on how to do this just post another post to this reply This happens on engines that ave high mileage or acar that runs low grade like regular.

    Apr 16, 2010 | 2004 Mini Cooper

    1 Answer

    ENGINE KNOCKS


    When you say engine knocks ..what type of knocks//where does the knocks come from top of engine like atapping/ knocking from the bottom of engine a harsh knock/ does it sound like it comes with 1 piston up on TDC or BDC or more than one knock per 1 RPM /AND whats the condition of the oil at the moment / and what engine have you got in it.
    Let me know how you get on ASAP Ron

    Nov 04, 2009 | 2000 Ford Expedition

    2 Answers

    Location of knock senor on 97 maxima se


    Your knock sensor is located Under the hood, center, front engine area, below intake manifold, mounted on block.


    A defective knock sensor may cause engine detonation or reduced spark advance and fuel economy. When a knock sensor is removed and replaced, the sensor must be tightened to its specified torque. If the knock sensor is installed tighter than it should be, it may become too sensitive and provide an excessively high voltage signal, resulting in more spark ****** than required. When the knock sensor is installed looser than it should be, the knock sensor signal will be lower than normal, resulting in engine detonation.

    To replace the knock sensor:
    • Disconnect the knock sensor wiring connector.
    • Then, unscrew the sensor.
    • Remove the knock sensor.
    • Reverse the procedures to install the part.

    May 15, 2009 | 1997 Nissan Maxima

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