Mundashie

2007 ES350. Recently, I noticed when I turn on my engine in the mornings it makes a whistle/squeak-like noise. It the sound continues and eventually fades away as I drive after a mile or two.

Any thoughts on what could cause this and how to resolve?

Thanks,
Mundashie

SW17LS

My guess is its the belt slipping. Happens as they get older...

Dave Mac

My first thought would be an exhaust leak. Does it do the same when everything is warn on a restart?

Dave Mac

Mundashie

Thanks for your replies.

@Dave Mac: It doesn't do it on a warm restart.

imherenow

ya i think the timing belt needs to be adjusted/tightened. If so then its a few minutes @ the dealer.

SW17LS

Its not the timing belt, the ES350 has a timing chain not a belt. Its the serpentine belt, it'll have to be replaced probably.

goku2

L-SB-0010-09 - Idler pulley squeal
SB date: 4 Feb 2009

Applicability: 2007 ES350 produced before JTHBJ46G#72178510 VIN

Issue: Squeaking noise from engine compartment when engine running

Repair: Add pulley cover plates (washers) behind both #2 idlers

http://workshop-manuals.com/lexus/es...eaking_noises/



Instructions on how to replace:
http://www.tirebusiness.com/article/...plate=printart