In my 2004 Z4 with 48,000 miles. I just noticed that when the engine is first started that there is an intermittent whining or squeaking sound. It sounds like its coming from the rubber belt area at the front of the engine near the top - I believe. It might be the belt tensioner? I don't think it’s coming from alternator which sits much lower.
Is there a way to isolate the sound? If it is the belt tensioner, why would it be making noise? Can it be lubricated with grease?
Any suggestions.
Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
Squeaking sound under hood when engine is cold
-
- Newbie
- Posts: 29
- Joined: Mon Mar 05, 2018 3:58 am
Squeaking sound under hood when engine is cold
2004 BMW Z4 3.0i Roadster, sapphire black, Oregon beige interior
- ph001
- Lifer
- Posts: 3870
- Joined: Mon Oct 31, 2016 5:53 pm
- Location: N. Yorkshire.
Squeaking sound under hood when engine is cold
Length of hose - one end to your ear, the other to the various spinny bits. The bearings have a finite life on the tensioners and all the other pulleys for that matter.
-
- Newbie
- Posts: 29
- Joined: Mon Mar 05, 2018 3:58 am
Squeaking sound under hood when engine is cold
I actually determined that it is the tension roller next to the alternator. It appears to be a reasonable job to replace it.
Thanks
Thanks
2004 BMW Z4 3.0i Roadster, sapphire black, Oregon beige interior