Question about 1989 Oldsmobile Cutlass Ciera

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ECM (Model No. 7-7727) pin for knock sensor?

Which pin (back of computer) is for the knock sensor on an '89 cutlas sierra, 2.8 liter engine?

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Gmc Sierra knock sensor???


There a several different engine sizes. The most common is the 5.3 liter. To replace the knock sensors (which will not solve your engine noise at startup) you will need to first remove the intake plenum. That is the part in between the valve covers that the throttle body and the injectors are attached to. Once the intake plenum is removed you ill see the knock sensors bolted to the block.

Apr 12, 2013 | Cars & Trucks

1 Answer

Wiring diagram 5.7 gmc sierra knock senser


Looks like the wire from the sensor to the module is dark blue.
You can find the engine diagram on autozone's website under repair help.

Sep 02, 2012 | 1994 GMC Sierra

1 Answer

Which pin on ECM goes to the Knock sensor?


the blue ( e-f ) ECM connecter pin F15 cicuit #496 ( Dk Blu wire )

Jul 06, 2012 | 1994 Buick LeSabre

2 Answers

P0325 what does it mean


P0325: Knock Sensor 1 Circuit Malfunction Bank 1 or 1 Sensor

- Knock sensor circuit short to ground
- Knock sensor circuit short to power
- Knock sensor circuit open
- Faulty knock sensor
- Faulty Engine Control Module (ECM)

Replacing the knock sensor usually takes care of the problem.

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Engine Control Module (ECM).

Feb 07, 2012 | 2005 Kia Rio

2 Answers

What causes a p 0327 diagnostic code on a 95 contour


P0327 - Knock Sensor 1 Circuit Low Input Bank 1 or Single Sensor
First check the knock sensor connector. If the connector is clean and secure, replacing the knock sensor usually takes care of the problem.

- An excessively low voltage from the sensor is sent to Powertrain Control Module (ECM) or Engine Control Module (ECM)

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Powertrain Control Module (PCM) or Engine Control Module (ECM).

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power

Possible causes
- Knock sensor circuit short to GND.
- Knock sensor circuit short to PWR.
- Knock sensor circuit open.
- Damaged knock sensor.
- Faulty Powertrain Control Module (PCM) or Engine Control Module (ECM).


Test and check it. Hope helps.

May 12, 2011 | 1995 Ford Contour

2 Answers

I have a 2000 nissan frontier that is reading a code of knock sensor malfunction. What would cause this. I just rebuilt the engine and trans. But had the same code before rebuild.


Hi, the code is indicating that the computer is not receiving data from the sensor. This may be due to a bad connection or a bad sensor. The computer uses the knock sensor to optimize ignition timing, so a bad sensor may affect mileage. You can check the sensor signal at idle as follows:

2.4L (KA24DE) I4 Engine & 3.3L (VG33E, VG33ER) V6 Engine
  1. Start engine and run at idle.
  2. Measure voltage at ECM pin 64.
  3. Voltage should be approximately 2.4 vDC.
The ECM is under the center of the dash as shown in the figure below. You will have to probe the back of the connector or slice the wire open to check the voltage with the engine running. Find a good bare spot on the bare metal frame of the dash as a ground point for measuring the voltage.

The knock sensor itself is on the back of the engine between the heads on the V-6. Not sure where it is on the 4-cylinder, but it looks like the picture below with a bolt going thru the middle. You can check the voltage there instead of the ECM, if you can back-probe the connector at the white wire.


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Please let me know if you have any questions, and thanks for using FixYa.

Apr 04, 2011 | Nissan Frontier Cars & Trucks

1 Answer

Service engine light on. Problem identified as P0332 Knock Sensor 2 Circut Low Input Bank 2


P0332 GM

Knock sensor circuit low voltage bank 2
- The ECM detects a KS signal voltage that is less than typical engine noise level for at least 4 seconds

Probable Cause[s]

  1. Open or short circuit condition
  2. Poor electrical connection
  3. Knock sensor
  4. ECM fault

Mar 13, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

I have a 04' Chev, 6.0L. Engine light came on, fault code came up PO332. I'm afraid the KS's are under the intake. Is there any way to test the KS to see if it is bad, or is there another problem that is...


P0332 - Knock Sensor 2 Circuit Low Input (Bank 2)

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Powertrain Control Module (PCM) or Engine Control Module (ECM).

Causes for P0332 DTC:
- Knock sensor circuit short to GND.
- Knock sensor circuit short to PWR.
- Knock sensor circuit open.
- Damaged knock sensor.
- PCM or ECM failure.

Solutions:
- Repair or resecure the harness or connector.
- Replace the knock sensor.

Your best bet is to just replace the knock sensor for sensor 2 bank 2. Call Auto Zone with part number SU1282 this is the OEM replacement.

The knock sensor looks like this:

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Mar 09, 2011 | 2004 Chevrolet Silverado 2500 Crew Cab

1 Answer

WHERE IS THE KNOCK SENSOR ON A 2006 CHEVY COBALT TO REPLACE IT.


Not related to the O2 sensor. Located on the front of the engine just above the starter KNOCK SENSOR (KS) SYSTEM DESCRIPTION

PURPOSE
The knock sensor (KS) system enables the engine control module (ECM) to control the ignition timing for the best possible performance while protecting the engine from potentially damaging levels of detonation. The ECM uses the KS system to test for abnormal engine noise that may indicate detonation, also known as spark knock.

SENSOR DESCRIPTION
The knock sensor (KS) system uses a flat response 2-wire sensor. The sensor uses piezo-electric crystal technology that produces an AC voltage signal of varying amplitude and frequency based on the engine vibration, or noise, level. The amplitude and frequency are dependant upon the level of knock that the KS detects. The engine control module (ECM) receives the KS signal through a signal circuit. The KS ground is supplied by the ECM through a low reference circuit.

The ECM learns a minimum noise level, or background noise, at idle from the KS and uses calibrated values for the rest of the RPM range. The ECM uses the minimum noise level to calculate a noise channel. A normal KS signal will ride within the noise channel. As engine speed and load change, the noise channel upper and lower parameters will change to accommodate the KS signal, keeping the signal within the channel. In order to determine which cylinders are knocking, the ECM only uses KS signal information when each cylinder is near top dead center (TDC) of the firing stroke. If knock is present, the signal will range outside of the noise channel.

If the ECM has determined that knock is present, it will ****** the ignition timing to attempt to eliminate the knock. The ECM will always try to work back to a zero compensation level, or no spark ******. An abnormal KS signal will stay outside of the noise channel or will not be present. KS diagnostics are calibrated to detect faults with the KS circuitry inside the ECM, the KS wiring, the KS voltage output, or constant noise from an outside influence such as a loose/damaged component or excessive engine mechanical noise.

Feb 24, 2011 | 2006 Chevrolet Cobalt

2 Answers

2002 chevy silverado hd2500 6.0 ecm code po332 low voltage knock sensor 2 bank 2 does this mean knock sensor is deffective causing ecm to throw this code and if so should both sensor be replace and which...


If all connections are good "dry, tight, no corrosion" then yes. It should be a defective sensor. These sensors are piezo sensors and create a voltage when sensing a knock. A bank refers to a side on a V style engine, 2 refers to the rear sensor on your bank 2. Bank 1 should be the side with cylinder #1 which should be the cylinder closest to you on one of the sides. So your looking for the rear sensor on the opposite side.

Jun 13, 2010 | 2002 Chevrolet Silverado 2500HD

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