gauge not showing oil pressure

[DevilSperm]

after i did my swap i cant get my gauge to read any oil pressure....it worked fine in the car before hand and now, nothing! i wiggled the wires on the housing and still have nothing....i thought maybe my pump wasnt working but i pulled my oil cap off and oil was flowing...also the cap leaks so i know i actually have pressure...any ideas on what else this might be?

 

[candela]

What swap? Maybe something more (like tracing them) needs to be done than a wiggle

 

[dsmturboawd]

if your oil is as thin as 5w, it can give you 0 at idle.

 

[Defiant]

New sender time.

 

[DevilSperm]

welli swapped a 90 motor into my 91...both cars ran but im rebuilding the 91 motor for strip...long story but anyway both cars showed oil pressure and now i get none, i think ill probably just put in a mechanical since i trust them more