TBI oil pressure sending unit

[tsr2185]

My 1991 350TBI runs fine and is my highway cruiser. Pretty much at anything above 1/4 throttle the oil psi gauge pegs out. I wasn't really concerned out it, as I know OBS oil pressure questions usually open pandoras box.

BUT, when it does peg out, the gauge makes a loud audible click in the cluster, making me think the sender is bad and grounding out or something. Is this a common thing? Should I just go ahead and replace the sending unit? How should i trouble shoot? I'm just worried the constant full send of the gauge will mess the gauge up, then I wont have any way to read oil pressure at idle.

thoughts?

 

[Scooterwrench]

Yeah,sounds like sender is toast.

 

[tsr2185]

Yeah,sounds like sender is toast.

Well to close out this lengthy thread, it was the oil sending unit. Had to remove distributor to easily get to it with a crescent wrench.

Oil pressure now ~40psi while cruising, and ~15psi hot idle. cant complain. Whether its a more accurate reading, or more misleading than before i don't care, the check gauges light doesn't come on anymore when hot idling lol and the damn gauge doesnt peg out anymore.