Engine Noise

[Tyleryac]

While doing some maintenance today, I noticed this noise and moving part which I think is the tensioner. What is it? No codes. Thanks in advance.

 

[Joe in NY]

its a bad bearing in an idler pulley or the tensioner pulley. How many miles? Really every 100K you should do belt, idler pulleys, and the belt tensioner itself. Especially on a Ford. GM uses 2 belts, the 2nd belt is for the AC compressor alone and with electric fans the main belt doesn't have too big a load either. My explorer makes me nervous having everything including a clutch fan on one belt, bad combo!

 

[Tyleryac]

112k miles. It's time to get that done. Thanks for the reply Joe.

 

[Tyleryac]

So that same noise is back. I'm thinking my timing chain is worn?