Question about 1999 Dodge Ram

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A loud knocking from inside the engine and also squeaking. When I'm driving there seems to be no difference in the way it runs. Hot or cold always knocking and squeaking. The cat and muffler have been changed oil level is right but after an hour of driving oil Gage drops to zero after a few seconds of ideling.

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  • newlyons28 Aug 26, 2010

    A while back it ran low on oil and that is when the light knockin started, but not all the time. I changed the oil(added mystery oil) a week after that it stopped knocking. Then here and there started back and one night it was unreal how bad it started sounding but what confuses me is it still rides fine. The light knocking was on and of for about three mounths or more.

  • newlyons28 Aug 26, 2010

    And the harmonic balancer does have a slight shake to it

  • newlyons28 Aug 28, 2010

    Do I need to remove the engine to replace crankshaft bearing, connecting rod bearing, or cam shaft bearing?

  • newlyons28 Aug 28, 2010

    I probably need to change any of these parts?.

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The squeaking could be the serpentine belt.Check it for tightness,check the tensioner,check the belt for cracking,fraying,anything that does not make the belt appear solid could be causing it depending how bad.The squeaking could also be the engine.If the oil pressure is dropping to zero,it is probably the oil pump and you should not even be driving it because the squeaking would be metal on metal,the piston rings against the chamber wall.I hope it hasn't been doing it long or you may have ruined the engine.If you do end up needing engine major repairs,either find a used one with as low mileage as you can find or maybe get new.I have not had much success with rebuilt engines but the decision is ultimately yours.It should be an oil pressure guage and not a level right?Normal pressure is about 60 psi.If you call acouple shops,they will give a free opinion and estimate because it is good for business.If one place does not,call another one.Knocking is probably caused by the tappets or lifters,but also is affected by low oil.
Good luck! Greg
Let me know what you find out.Just reply here and I will get an auto link.

Posted on Aug 26, 2010

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How long has this issue been going on? By what your describing, it seems there is an internal engine component that has spun a bearing due to low or no oil lubrication.
If this is the case, the engine is in need of some serious repair.
Are you sure it is the engine (internally). The reason I ask is because replacing the cat and muffler is an unusual approach to this issue from a diagnostic stand point.

Posted on Aug 26, 2010

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  • GetMeOttaHere Aug 26, 2010

    An engine can run fine with an engine knock, but it is only a matter of time before the internal part(s) fail. Running an engine low on oil starves critical engine components of lubrication, therefor with no lubrication, you create a metal to metal operating condition and the part(s) wear out and are no longer tight, causing the component(s) like a crankshaft bearing, connecting rod bearing, or camshaft bearing to slap around inside the engine. There is no quick fix for this condition.

  • GetMeOttaHere Aug 28, 2010

    Hard to say at this point. The noise has to be isolated to a specific component, in a nut shell, the engine needs to be torn down and inspected. Replacing bearings is not as easy as swapping a bad one out then replacing it with a new one, there are clearances and tolerances that have to be met during install. In other words, these are precision replacement parts that if not installed correctly will cause catastrophic failure with the replacement part or other parts of the engine.

  • GetMeOttaHere Sep 02, 2010

    ..............

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