Welcome Visitor! Please take a few seconds and Paulos
Active Member
- Joined
- May 7, 2018
- Messages
- 479
- Reaction score
- 210
- Points
- 43
- Location
- North Carolina
- Vehicle Year
- 1987 STX
- Make / Model
- Ranger
- Engine Type
- 2.9 V6
- Transmission
- Manual
- 2WD / 4WD
- 4WD
I have an '87 2.9L 4X4 Ranger. Any ideas why my oil pressure would be erratic? It starts out around 50-60lbs when cold, after warming up it runs about 40lbs while driving, drops to about 15-18lbs at idle, but the whole time the needle on the gauge bounces around a couple lbs in either direction. The odd thing is that the oil pressure gauge acts quite similar to the vacuum gauge, which indicates that I've got a stuck or burned valve. The oil pump has 300K+ miles on it, so I figure it's time for a new one, but I've never seen an oil pressure gauge act like this.
