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The Cadillac converter is knocking Why is this happening

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The internal parts wear out and become loose causing the noise.

Posted on Apr 23, 2013

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Jan 11, 2016 | Cadillac Cars & Trucks

1 Answer

WHAT ARE CODES PO330 AND PO320 CTS 2006 CADILAC


I use this website all the time:
https://www.obd-codes.com/p0320
https://www.obd-codes.com/p0330
https://www.obd-codes.com/p0420
https://www.obd-codes.com/p0430

Now the art is knowing how to interpret, the P0320 and P0330 can set off your P0420 and P0430 oxygen sensor codes. I would address the P0320 and P0330 first and probably the O2 sensor stuff will probably go away. If your car is knocking, rough idle, loses power, etc. then the 300 codes make sense and you have issues. It could also be two separate issues were damaged wiring on the knock sensors and then a damaged catalytic converter. I've got a car that constantly throws up 420 and 430 codes because the catalytic converter got dinged up from running something other.

Apr 17, 2015 | 2006 Cadillac CTS

1 Answer

Knocking sound in a 1979 cadillac coupe deville 7.0 liter Rwd


To check for bearing failure remove the plug lead from the suspect cylinder and run the motor. If it is a bearing if will be noticeable less without the stress of firing. It could be a cracked flexi plate that drives the tranny in front of the torque converter. Remove cover plate and visually check for cracks in plate

Feb 01, 2013 | 1979 Cadillac Brougham

1 Answer

My knock sensor on my 2003 cadillac deville is faulted. How hard and what tools and supplies do I need to replace the knock sensor


  1. Remove the intake manifold.
  1. Disconnect the knock sensor electrical connector.
  1. Remove the knock sensor (KS).
Installation Procedure

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    .
  1. Install the knock sensor.Tighten
    Tighten the knock sensor to 25 [n-m] (18 lb ft).
  2. Connect the knock sensor electrical connector.
  3. Reinstall the intake manifold.
    this is quite a job and i would not reccomend a novice mechanic to preform this repair book time is about two hours for this repair hope this helps

Oct 20, 2012 | Cadillac DeVille Cars & Trucks

2 Answers

2003 Escalade 6.0L AWD p0327 code replaced both knock sensors and harness. Cleared codes 10 miles later light came back on p0327. What do i look for now?


  • Verify the resistance of the knock sensor (compare it to factory specs)
  • Inspect for broken/frayed wires leading to the sensor
  • Check the wiring and connections leading to/from the knock sensor and PCM/ECM
  • Verify proper voltage is reaching the knock sensor (e.g. 5 volts)
  • Verify proper grounding of sensor and circuit
  • Replace the knock sensor
  • Replace the PCM/ECM

Jun 03, 2012 | 2003 Cadillac Escalade

1 Answer

My 2000 Cadillac Deville engine light on. Engine code PO420


Catalyst System Efficiency Below Threshold (Bank 1)

A code PO420 may mean that one or more of the following has happened:
  • Leaded fuel was used where unleaded was called for
  • An oxygen sensor is not reading (functioning) properly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Retarded spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of reading

  • Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2), replace if necessary
  • Replace the catalytic converter

May 11, 2011 | 2000 Cadillac DeVille

1 Answer

Where is the knock sensor on a cadillac sedan


located underneath the intake manifold remove it and disconnect the knock sensor unscrew the knock sensor. installation is reverse

Feb 27, 2010 | 1996 Cadillac DeVille

1 Answer

What happens when Cadillac converter is out??


the catalytic converter will run for years until the platinum plated beads are old and white in color. when that happens the deposits of the exhaust will build up and plug the converter up making the engines performance very sluggish. eventually the engine will not run until the converter is removed

Feb 25, 2010 | Lexus RX 300 Cars & Trucks

1 Answer

2000 Cadillac deville


could damage the transmission. the soliniod is like $50 on ebay. and a mechanic will charge a few 100 to do the job

Feb 21, 2010 | 2000 Cadillac DeVille

1 Answer

Have a 2002 Cadillac Escalade AWD 6.0 Knock sensor intake manifol


If you're apprehensive about doing this work, buy a Haynes repair manual (about $20), It shows you how to remove the manifold

Nov 05, 2009 | 2002 Cadillac Escalade

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