I have recently picked up a 1981 Olds delta 88. the body is in mint condition but the engine bay needs a bit of love. My parents have owned 2 of these when i was a kid. When it needed to get looked at i was always with my Dad looking under the hood but i don't remember what this black spherical is part of. it is sitting loose under the hood and i cannot find a mounting point.

Can anyone let me know what it is and if it is important.

Thanks
Kurtis G

It kind of looks like it could be the horn. I have seen some very odd looking horns in older cars before. Good luck!!

I forget what that thing is..Not the horn..something to do with barometric pressure?
Does the 81 Olds still have the emission label..it may be listed there.
If I remember right it mounted with plastic feet at the bottom, pretty much where it is in photo, on top of fender there on passenger side.

Nope, its a vacuum reservoir. They are usually mounted to the hood or firewall/fenderwell area. It prevents stalling of the engine when you change from floor to vents to defrost on your HVAC controller.

Ok cool thanks! I will check it out when it'* warmer in the garage! Thanks for the help!!

Kurtis

its the digital blinker fluid kaanuter valve that controls how fast the blinker blinks...No...just messing, lol its simply an vacuum res as stated above