My factory oil pressure gauge is acting strange. When I start out in the morning it's fine, right up about 75-80 psi at 1800-2000 RPM. It will back down just a little to about 65-70 psi after I get going down the road 5 miles or so and hit operating temperature. It will stay there as long as I don't slow down for a period longer than 10 seconds (as in when I slow down in traffic on the interstate as I am driving to work) or if I have to stop for a red light.
When I do slow down or stop, the pressure drops toward the low end of the scale and then goes back up. But it does not go back to 65-70 psi, it is more in the middle around 50-55 psi. Sometimes it will stay at 50-55 psi and sometimes it will go back up to 70 psi as I increase RPM to 2000 and reach 70 mph cruising speed.
When I leave to come home from work, same thing happens. High pressure (normal pressure) till I stop at a light then it reads lower, around 50-55 psi at 1800 to 2000 RPM when going down the highway at 60-65 MPH.
I am thinking the oil pressure sending unit is not completely defective, but it is getting erratic since I have 130,600 miles on my truck now. It's the original gauge and sending unit.
I honestly don't think it's the bearings, the truck has good power, runs quiet and has a smooth idle and makes no odd noises. I appreciate any help or advice you can offer here. New sending unit is only $32.00 and easy to replace.
Thanks.
When I do slow down or stop, the pressure drops toward the low end of the scale and then goes back up. But it does not go back to 65-70 psi, it is more in the middle around 50-55 psi. Sometimes it will stay at 50-55 psi and sometimes it will go back up to 70 psi as I increase RPM to 2000 and reach 70 mph cruising speed.
When I leave to come home from work, same thing happens. High pressure (normal pressure) till I stop at a light then it reads lower, around 50-55 psi at 1800 to 2000 RPM when going down the highway at 60-65 MPH.
I am thinking the oil pressure sending unit is not completely defective, but it is getting erratic since I have 130,600 miles on my truck now. It's the original gauge and sending unit.
I honestly don't think it's the bearings, the truck has good power, runs quiet and has a smooth idle and makes no odd noises. I appreciate any help or advice you can offer here. New sending unit is only $32.00 and easy to replace.
Thanks.