my 2001 frontier xe is making a chirping sound while idling. i maily hear it in the morning, when i first start the truck... it seems to go away during the day, but sometimes it come back in the afternoon...
an observation i have made is that when i first start the truck, rpms start at 1200 and then drop down to 800... is this normal? if not, could it be related to the chirping sound?
thanks, ac