Steve Diomin
Cadet
- Joined
- Jul 30, 2010
- Messages
- 9
I have a 1998 Crownline 202br 5.0l carbed mercruiser. 250hrs
My problem is the oil pressure gauge isnt working and im not sure what is left to do, here is a sumary of whats going on.
Baby blue wire goes from sending unit to the gauge on the dash
Gauge reads zero oil pressure
Got 12 vlts at the gauge, plus tested the gauge on the bench and got deflection. Grounded the wire at the sending unit and get nothing on the gauge. Ohm the sending unit and get 240hms at zero oil pressure, so that checks out.
So the gauge is god and the sending unit sems to be good, i cant see anywhere where there is or would be a problem with the single blue wire........
Im up for some sugestions and some input and I have 1 question. The purple/yellow wire that is connected to the oil pressure switch (not the sender) is not connected at the starter solenoid as the wiring diagram indicates it should be...........Does the oil pressure switch with the yellow/purple wire have anyhting to do with making the baby blue wire and the oil pressure sender work?
My problem is the oil pressure gauge isnt working and im not sure what is left to do, here is a sumary of whats going on.
Baby blue wire goes from sending unit to the gauge on the dash
Gauge reads zero oil pressure
Got 12 vlts at the gauge, plus tested the gauge on the bench and got deflection. Grounded the wire at the sending unit and get nothing on the gauge. Ohm the sending unit and get 240hms at zero oil pressure, so that checks out.
So the gauge is god and the sending unit sems to be good, i cant see anywhere where there is or would be a problem with the single blue wire........
Im up for some sugestions and some input and I have 1 question. The purple/yellow wire that is connected to the oil pressure switch (not the sender) is not connected at the starter solenoid as the wiring diagram indicates it should be...........Does the oil pressure switch with the yellow/purple wire have anyhting to do with making the baby blue wire and the oil pressure sender work?
