A Bird In The Hand Is Worth Two Under The Hood???

[wscheffer]

Hello everyone,

I recently performed an oil change on my 1987 420SEL and then noticed that after I start the car and it idles for approximately a minute or so then I will hear a chirp from under the hood.

It does not do this all the time and it is just a single chirp, and occasionally after turning the ignition off it will also do it as the motor comes to a halt.

Anyone have any suggestions as to what might be causing this to occur?

 

[television]

This could be any of the pulleys on the front, mainly water pump and idler,alternator possibly

 

[wscheffer]

Thanks again Malcolm, I'll have to wait for it to get nosier or fail to isolate this fault. Happy it's not grinding timing chain noise!