when i was driving, my truck made a noise then the oil pressure gauge dropped.
Feb 23, 2012 at 5:18 PM
CARADIODOC
✓Experienced Mechanic
34,397 POSTS
Have you checked the oil level? If it's full, suspect worn engine bearings. The oil pump can't keep up at the lower idle speed with how fast the oil will run out through the bearings. That wear will accelerate very quickly once it starts.