why does my oil pressure drop and vehicle feel like it's going to die when at a red light?

2001 CHEVROLET TAHOE

96,000 MILES

JESSEROEL

MEMBER
3 POSTS

At the red light, the pressure will drop n fluctuate, then the other gauges drop n it feels,like it wants to die. Idle has a slight roughness, and the oil is at a good level. It's almost as if the alternator is bad and doesn't wnts to charge without help from a higher idle. But I've never seen that affect oil pressure. Please help!

Oct 4, 2012 at 8:04 PM

CJ MEDEVAC

✓Experienced Mechanic
11,000 POSTS

It sounds like the oil pump pickup screen is clogged or the oil pump needs to be replaced. Here is how to remove the oil pan to check the screen and how to replace the oil pump. Check out the images (Below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Images (Click to enlarge)