Okay fellas I have a question I'm connecting a summit racing oil pressure gauge to the car the car used to be a 91 rally sport V6 now it has a 350 with a small cam in it brand new oil sending unit electrical gauges I turn on the ignition after connecting the orange to the signal wire the black to the ground the red to ignition hot and left the purple disconnected because I don't care anything about it dimming. When I switch on the ignition the oil pressure gauge automatically pegs at 100 when I fire the car up it drops down to about 80 lb of pressure now I'm sure that I don't have that kind of pressure going on of course the best way to check is to put a mechanical gauge on it but considering the fact that not too long ago we're talking less than 500 mi this car only had about 35-40 lb of pressure at idle maybe and that was a cold out if I'm not mistaken so what could possibly be the problem could it be the gauge suite or the gauge testing that Camaros are known to do.??


Teflon tape?????

 

Gentleman please correct me if I'm wrong thought just went through my head if the Teflon tape is making it so it's not making contact with the engine block or not making good contact I should be able to check for continuity between it and the battery am I right and the continuity is splotchy I should be able to tell please correct me if I'm wrong or stand me in the correct direction thank you all gentleman

 

Bad connection on the oil sending unit and bad ground