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My 89 Chevy 2500 over heated so I added water and checked the oil the filter was clogged so I replaced it but the truck still knocks what could be knocking

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How long did you drive it over heated? Sounds like you need to change your oil more often, Maybe a Crank Bearing, Crank Rod, or even the Crank its self! Take a mop, broom stick, plunger handle works best or something of sort that fits to the form of your ear and scope around the motor placing the end that doesnt form to your ear to the engine block to find where the knock is coming from and go from there... Good Luck...

Posted on Jan 21, 2013

  • Timothy Jan 21, 2013

    For about ten minutes and thanks I'll try that

  • Timothy Jan 21, 2013

    For about ten minutes and thanks I'll try that

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: High oil pressure and knocking in the engine

There is a pressure relief valve in the oil pump, it is stuck closed, this happens now and then, seen it 2 times, since the oil pump is a positive displacement pump it can produce 100's of pounds of pressure, the reason for the noise is that u have allot OF pressure but very little volume, the bearings are being starved for lubrication, replace the oil pump, DO NOT DRIVE THE TRUCK, U WILL BURN OUT THE ROD AND CRANK BEARINGS.

Posted on Dec 10, 2008

  • 625 Answers

SOURCE: obd code po200 and po300. 2002 chevy 2500 hd

this trucks have very coming problem with the injectors stuck open or close, and some times they just works great and some does not, dealer has an updated injector assembly, i recomend you to install this update and spark plugs and plug wires, if you had replace plugs and wires recently just redo the spark plugs with the injectors

Posted on Jun 15, 2008

  • 12 Answers

SOURCE: knock sensor for 1997 chevy C1500 Pickup Truck

Located on right hand side of block (pass side). It is between motor mount and starter.

Posted on Nov 27, 2008

tripletauto
  • 1450 Answers

SOURCE: Where is the location of the knock sensor for a 2005 HD 2500 6.0

HAS TWO KNOCK SENSORS they are both under intake in valley of engine. remove intake and will see two black grommets they are under those best to replace both at same time

Posted on Jan 26, 2009

  • 366 Answers

SOURCE: Knock sensor location

if its a cmfi or csefi injection system theres 2 knock sensors 1 on each side of engine block,1 under the left bank of block,the other under right bank of block,tbi inj. theres 1 in front of starter.

Posted on May 28, 2009

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