The oil pressure sending unit on a 1997 Buick LeSabre is located on the bottom side of the engine, near the oil filter. It monitors oil pressure to ensure that the pump is working properly.
red
In the exhaust pipe
10
It is not possible to remove the power steering pulley on a 1997 Buick Le Sabre without removing the power steering pump.
That should be the Oxygen Sensor
18 Gallons About $54.00 or 18 gallons
The 3.8L engine has a timing chain.
front lower left of timing case cover around oil pan and engine block meet facing firewall
On front cover of engine, slightly above crankshaft pulley.
check the oil pressure snding unit first then check the pressure gage if both are good you need to replace oil pump Oil pumps in buick 3800,s do not go bad. Replace sending unit or the oil pump pickup screen is clogged.
remove the old one... install the new one... this ain't rocket science
Dont pay more than $900 to get it installed. its not a very difficult engine to swap.