Oil pressure guage reads 120 psi constantly

NOTAPROMIKE

MEMBER
2002 PONTIAC BONNEVILLE
3.8L
V6
FWD
AUTOMATIC
130,000 MILES

My oil pressure reads 120 all the time. Which sensor is broke. Where is it located, what does it look like and is it easy to change? Thanks. Mike Ellis

Thursday, February 5th, 2015 AT 4:27 PM

4 Replies

SATURNTECH9

MECHANIC
30,869 POSTS

So when you turn the key on and don't start it the gauge reads 120? Also when you turn the key off it reads zero? If so that could be a bad oil pressure sending unit. Let me know so I can get you more info.

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

+1

Thursday, February 5th, 2015 AT 5:31 PM

NOTAPROMIKE2

MEMBER
31 POSTS

When the car is off the oil pressure gauge reads 0. When the key is turned on with the engine NOT running, the gauge reads 0. When the car is running, the gauge reads 120. I know it has oil pressure as the motor is smoothe and quiet. I need to know what part is bad, where it is located on the car and if it is a fairly easy job. Thank you. Mike Ellis

Was this

answer

helpful?

Yes

No

Friday, February 6th, 2015 AT 6:18 AM

SATURNTECH9

MECHANIC
30,869 POSTS

The oil pressure sending unit is on the front of the engine bellow the power steering pump shouldn't be had to remove with a extension and oil sending socket. I cant tell you if its bad without testing the oil pressure to see how it compares to the readings. So gauge or sending unit is bad.

Was this

answer

helpful?

Yes

No

+1

Sunday, February 8th, 2015 AT 6:11 PM

NOTAPROMIKE2