bug buggy
Junior Member
5.9L. After a couple minutes at start up in these colder morning temps is when it starts to whistle. I try to home in just by listening , but it sounds like its coming from the whole engine bay. Its a very loud whistle? I can drive it to the office, about 6 miles, still doing it, pull in park and turn it off let its set for a few minutes start it back up and not doing it. Cant notice any change in idle or going down the road?