Whistle on startup - ZR-1 Net Registry Forums

Franke · 05-22-2015

I wonder if it could be your A.I.R. pump running. It runs to help bring the cats up to temp etc. then shuts off.

QB93Z · 05-23-2015

Can you tell where the sound comes from? Left or right, front or back? The AIR system is a likely candidate, but it runs every time you start the engine. You mentioned the noise happens on the first start of the day.

If you think it is coolant related, start the car with the coolant cap off, but don't run it too long that way.

Does it make a difference if the clutch is in or out?

Jim

05-22-2015	#1
Franke Join Date: May 2013 Location: Beaver, PA Posts: 515	Re: Whistle on startup I wonder if it could be your A.I.R. pump running. It runs to help bring the cats up to temp etc. then shuts off.

05-23-2015	#2
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,684	Re: Whistle on startup Can you tell where the sound comes from? Left or right, front or back? The AIR system is a likely candidate, but it runs every time you start the engine. You mentioned the noise happens on the first start of the day. If you think it is coolant related, start the car with the coolant cap off, but don't run it too long that way. Does it make a difference if the clutch is in or out? Jim