2001 Buick Lesabre 6 cyl Front Wheel Drive Manual 130000 miles
The normal oil pressure on my Buick LeSabre has been about 65 psi. About a month ago the pressure reading jumped to 85 psi, then a few days later jumped to 130 psi and has been at that reading ever since. I changed the oil filter, but that had no effect. There are no other symptions - there is not even a warning light about the high pressuer - the display just reads " normal". What could be causing this? Could it be the oil pressure sensor? When the engine is not running and I turn the key to " on" but don't start the engine, the oil pressure reads " 0". Once the engine starts, the pressure goes right to 130 psi.