Assalam o alaikum,
I own a 2001 toyota vitz. I am experiencing a whistling sound coming out from engine bay. The sound disappears when accelerator is pressed suddenly. I tried checking and its not the belt. Any expert opinions please ?
im experiencing the same whistling sound during driving which goes away when accelerator is depressed. i have also 2001 model. any1 please ?????
its idle air control valve malfunction and usually appears after jamming IACV Valve so best option is get it replaced its installed under the throttle body assy.
thx @rajaatta
Issue was solved by cleaning the IACV with carburetor cleaner.