I have a 1995 Ranger 4.0 4x4 5 speed..the oil gauge fluctuates between low and mid range. This is a scary feeling when I look down at the gauge and see no oil pressure. Is it a sending unit,or do you think maybe the pump is going bad. I use 15w40 oil in this baby..she has 170k on her..Please help!
low oil pressure gauge
- Thread starter lg95ranger
- Start date
- Joined
- Aug 7, 2007
- Messages
- 2,243
- Points
- 3,101
- Age
- 54
- City
- Farmington Il.
- Vehicle Year
- 1988
- Transmission
- Automatic
Why are you running such thick oil? I know you said it has 170K on it but 15w40 is a bit much. The clearances of that engine so close and that 15w40 has a problem getting where it needs to be. First thing I would do is take the 15w40 out and put a 5w30 or 10w30 in it to see if the pressure will come up. If that doesn't work put you a mechanical opil pressure guage in place of the stock oil sending unit. That will give you a good idea where you need to go next.
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