Knocking Noise on Start Up

[greg0078]

Recently I heard a knocking noise on the right hand side of the engine.  After idling for a few mins it goes away.  It appears when i do not start w/ the heat/ac controls turned on I do not hear the noise.  2001 carrera cab 64k miles

I saw another thread which ppl though it could be tensioners, piston/camshaft.  

 

Anyone seen this issue and resolved?

Edited November 17, 2020 by greg0078

[wyovino]

Maybe a loose baffle in the muffler or cat.

[JFP in PA]

1 hour ago, greg0078 said:

Recently I heard a knocking noise on the right hand side of the engine.  After idling for a few mins it goes away.  It appears when i do not start w/ the heat/ac controls turned on I do not hear the noise.  2001 carrera cab 64k miles

I saw another thread which ppl though it could be tensioners, piston/camshaft.  

 

Anyone seen this issue and resolved?

 

Unidentified sounds like this can be something small, like a loose part, or they could be something much more serious.  Unless you can isolate the sound source, I would recommend not driving the car and flat bedding it to someone that can do more intensive diagnostics for you.