BeaverDamVa
New member
- Joined
- Dec 28, 2021
- Messages
- 3
- Tractor
- Blue ones
I have a 2007 T190 4500 hours. Engine oil pressure light keeps coming on 04-09 code. It comes on at about the same point every time, a few minutes after the cooling fan kicks into high and the temp gauge is about 1/3 into the green and only at full throttle.
What I have done. Changed the oil and cut the filter open. Filter was free of metal flakes. Replaced the sending unit. Put mechanical gauge in. Gauge reads 65 at idle cold 76 at full throttle. 42 at idle and 57 at full throttle when the light comes on. I've gone so far as to get the light to come on and swapped in the gauge and had my wife drive up a hill and the oil pressure varied between 54-58 psi. Checked voltage, 8.09 cold and 8.03 at temp that trips light. Looked for rodent damage. I can't find any. Disconnected the battery; + terminal was loose, cleaned terminals and made sure they were tight. Light still came on.
One thing is that it had previously thrown some other codes. First was an RPM sensor fault at start up but it ran fine: doesn't run fine when the sensor is unplugged, and went away? Then a couple times there was a fuel pressure code but checking and cleaning the plug seemed to stop that. I also tried jiggling wires to try to get it to trip no luck. Light comes on immediately when sensor is unplugged and goes off when plugged back in.
What I have done. Changed the oil and cut the filter open. Filter was free of metal flakes. Replaced the sending unit. Put mechanical gauge in. Gauge reads 65 at idle cold 76 at full throttle. 42 at idle and 57 at full throttle when the light comes on. I've gone so far as to get the light to come on and swapped in the gauge and had my wife drive up a hill and the oil pressure varied between 54-58 psi. Checked voltage, 8.09 cold and 8.03 at temp that trips light. Looked for rodent damage. I can't find any. Disconnected the battery; + terminal was loose, cleaned terminals and made sure they were tight. Light still came on.
One thing is that it had previously thrown some other codes. First was an RPM sensor fault at start up but it ran fine: doesn't run fine when the sensor is unplugged, and went away? Then a couple times there was a fuel pressure code but checking and cleaning the plug seemed to stop that. I also tried jiggling wires to try to get it to trip no luck. Light comes on immediately when sensor is unplugged and goes off when plugged back in.