2001 Pontiac Bonneville 120 psi of oil pressure

BUG9274

MEMBER
2001 PONTIAC BONNEVILLE
6 CYL
FWD
AUTOMATIC
99,000 MILES

I recently changed the oil and filter on my car. I used the same size filter and put 5 qts of oil back in it. I started the car and checked the oil pressure gauge and was shocked to see it reading 120psi. The engine seems to be running fine and the filter has not popped off. Could it be that the sensor is faulty? I checked to make sure there was not to much oil in the engine as well, dip stick reads just below full.

Sunday, November 2nd, 2008 AT 3:34 PM

5 Replies

BLACKOP555

MECHANIC
10,386 POSTS

You might have disconnected it or maybe damaged the sensor when changing the oil, go back and make sure its hooked up.

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Sunday, November 2nd, 2008 AT 5:18 PM

BUG9274

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2 POSTS

I went back and looked everything over and even removed the oil filter to see if it was full of oil and it was.

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Monday, November 3rd, 2008 AT 11:24 AM

BLACKOP555

MECHANIC
10,386 POSTS

Next thign to do is to use a oil pressure check guage to see if the pressure is actually 120 like the guage says or if its normal.

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Monday, November 3rd, 2008 AT 3:42 PM

HOLBROOKA

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2 POSTS

I had a similar situation, everything fine one day, then noticed the Oil pressure gauge going crazy.

I replace the oil sensor and all was well.

Here is a link from a different thread that shows where it is on a 2000 - hopefully it is the same. It was quite easy to replace - if you remove the oil filter and attack it from below.

Good Luck

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Monday, January 19th, 2009 AT 12:50 PM

BLACKOP555