strikeraj

Hi all
Today when I was driving with my windows down, I notice a chirping sound when I'm stopped at a light. But when I put it into park, it disappear. I cannot hear it when car is driving either. So in summary, the following situation makes the sound

Car stopped when in reverse or drive, but not in park.

Anyone knows what the reason would be?
Thanks in advance

SeanO

iTrader: (1)

Sounds like it could be a belt..

strikeraj

I was thinking belt for a second, but then once I put the car in park, there is no noise anymore, that makes me worry if it is something related to transmission

SeanO

iTrader: (1)

automatic or manual transmission?

strikeraj

It is the is350 auto
It is a 2008 car

MWIS350

IS350 belt is chains never have to worry.

A1cntrler

iTrader: (2)

You're not serious, right? I've yet to see an engine that uses a chain to drive the accessories instead of a belt.


When you put the car into D or R it's putting a bit of a load on the engine. The RPM's drop slightly. The belt could be chirping a bit under load. Does it behave the same way in N as it does P? How old is the belt? Also might check your idler pullies and tensioner pullies. A bearing in either of those on the way out could start out by chirping. Fortunately if you're a do-it-yourself type person, they're easily replaced and not too expensive to do so.

SeanO

iTrader: (1)

I ain't no expert but I'm pretty sure there are no chains in my engine bay lol

RXGS

iTrader: (2)

The engine is driven by a chain, the accessories are driven by the belt

SeanO

iTrader: (1)

learn somethin new every day haha