I have a 1988 Monte SS V8 305. When I first it start up, oil pressure gauge shows good pressure. As it warms up, pressure goes to nearly none. What could be problem - problems? Also, right blinker does not flash, arrow inside is green, but not blinking. Replaced front and back bulbs, still not working. Any ideas? Thanks.

 

Sounds like a clogged oil pick up tube and/or screen, or a bad oil pump.

Check the flasher unit and grounds and connections for the bulbs, otherwise it may be the multi-function switch or wiring to it.