Hi there,
About two months ago I bought a 2006 Nissan Pathfinder. I had both the radiator and timing chains and tensioners replaced as these commonly cause problems. The engine produced a whining noise which disappeared after replacement. Now, after 4000 miles slowly but surely the whining noise is returning. A faulty belt tensioner has been replaced but did not cause the noise. Everything else seems to be working fine. So my question, could it be the timing chain tensioners again? If yes, how would it be possible after 4000 miles? FYI the sound first started on a cold start only. Any help is appreciated!
Regards,
Michael