Question about 1997 Pontiac Bonneville

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I have a 1997 pontiac boneville se the oil pressure gadge is reading 140 psi it should be 40 psi i replaced oil pressure switch it still reads 140 psi what could be the problem

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  • bigj6360 Oct 13, 2008

    I have the same problem on my 2003 ssei. I have also changed the oil and oil filter (It was due).

    Don't know what it is.


  • bishop53 Dec 07, 2008

    Same problem on my 2000. Any ideas?

  • Anonymous Dec 20, 2008

    Same problem....high oil pressure reading. I replaced the sending unit, but no difference. Please advise. Thanks.

  • Anonymous Jan 05, 2009

    I have a 2000 Pontiac Bonneville SE. The oil pressure gage is reading 120 PSI at 2000 RPM and about 95 at idle (750 RPM)



    VWP

  • Anonymous Jan 21, 2009

    1997 Pontiac Bonneville SSE the oil gauge reads 50-70 psi. Please assist in identifiying the problem and how to possibly repair for normal oil pressure reading.

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Ckeck the ground wire located near the sensor... this causes this problem

Posted on Feb 28, 2009

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1 Answer

Oil pressure gauge reading


Normal is really any place in the middle of the gauge.
Depending on the age and condition of the engine, and the temp of the oil, oil pressure at idle should be at least 25-35 psi and at cruising speed between 40 and 60 psi.

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No oil pressure on idle


Did you check the oil level in the engine?
Since the oil pressure sensor is only a on/off switch set to change states at around 15 PSI, it's possible your sensor is going bad and giving false indication. Be aware that the oil pressure reading on the gauge is only a number made up by the computer, so depending on the state of the sensor switch, the gauge will display either 40 - 50 PSI or 0 PSI.

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Alrighty. I've asked this a few times before, I have more info now. CHEVY 350 K1500. 1993. Replaced intake gaskets, (bad oil leak) dropped a small amount of coolant in with oil while doing so. Changed oil...


how did you clean the gasket off of the head? if you used a sanding disc the grit will eat up the bearings. are you reading pressure with a mechanical gauge? you have replaced all bearings??

6 psi @ 1000 RPM
18 psi @ 2000 RPM
24 psi @ 4000 RPM
this is chevrolet specs on oil pressure in your truck so you are within the range.

describe your idle problem more and i will try and help you with that

Feb 02, 2011 | 1993 Chevrolet K1500

1 Answer

What should oil pressure be at idle.Does the read out on your dash always right.


my 4.0 reads 18 PSI at idle, but on the 3.5 versions I have a lot of bad oil pressure sensors. They end up reading very high or go off scale at the top. Replacing the sensor fixes it only for a short time. I finally gave up on it.
Should probably read 40 -60 PSI driving.

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1 Answer

What should a 2002 Pontiac Bonneville oil pressure gage read at


at what? depending on engine temp and rpm, normal oil psi should read 30-40 psi at idle and at cruising speed of 1500 to 2000 rpm should read 60-70 psi. most bonnevilles from 1992 to the last year run of 2005 have the 3.8 liter V6 which was updated over the years.

Oct 13, 2009 | 2002 Pontiac Bonneville

3 Answers

I have oil pressure until i stop , then it drops to below 10 psi


Increase the viscocity of your oil. If you're using 10W30, go to 10W40. If you're using 10W40 switch to 20W50. Don't use single weight oil.

Sep 19, 2009 | 1998 Jeep Wrangler

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My stop light keeps coming up with the problem oil pressure,i have a golf gti turbo


Get the oil pressure tested with an outside gauge. If you run short of oil pressure, turbo and engine will suffer, as you know....

If you are actually short on pressure, you would need to investigate further, usually no good answers there....

But commonly a transducer fails and gives wrong readings, hope for this result

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1 Answer

Oil pressure switch


Pressure switch is usually located near the oil filter and generally has two wires on it. Best way to check it is by putting a manual oil pressure gauge in it's place and reading actual oil pressure. If your symptoms are no oil pressure reading or abnormal readings, with no tapping noises (or worse) from engine then it likely is the switch. Most require a special socket to remove but the sending units are not terribly expensive.

Nov 29, 2008 | 1992 Pontiac Sunbird

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