Oil PSI spiking???
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Joined: Oct 2011
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From: Aurora Colorado
Oil PSI spiking???
Had my 2012 GS since may. Car has 2,800 miles. Love it to death! Took it out for a drive today, and noticed that the oil pressure (usually 40 PSI if I remember correctly) would spike to 80 PSI plus on acceleration. Took it straight to the dealer to look into it. My OnStar monthly report said oil life is at 59% life. Any ideas as to what is going on?
Burning Brakes
Joined: Sep 2012
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Had my 2012 GS since may. Car has 2,800 miles. Love it to death! Took it out for a drive today, and noticed that the oil pressure (usually 40 PSI if I remember correctly) would spike to 80 PSI plus on acceleration. Took it straight to the dealer to look into it. My OnStar monthly report said oil life is at 59% life. Any ideas as to what is going on?
55psi is completely normal crusing at normal operating temps for the GS. Its supposed to be 15psi higher than the wet sump if you have the dry sump.
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From: Aurora Colorado
Not being rude, but how is it normal? It has never done this before. It just started for the first time today. Something had to have changed to cause this to just suddenly start happening.
Burning Brakes
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Pro
Joined: Oct 2007
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From: TremontonUT UT
completely normal at WOT. not to worry. My 11 GS does the same thing. And this topic pops up every few weeks with a new GS owner thinking that something has gone wrong.
55psi is completely normal crusing at normal operating temps for the GS. Its supposed to be 15psi higher than the wet sump if you have the dry sump.
55psi is completely normal crusing at normal operating temps for the GS. Its supposed to be 15psi higher than the wet sump if you have the dry sump.
Last edited by fnsblum; Nov 2, 2012 at 12:44 AM.
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Joined: Oct 2011
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From: Aurora Colorado
Since I have had it (5 months) I have never saw the PSI budge from right around 40 PSI. Dealer said they would look into it, and it might be a sensor or something like that. Said 3-4 hours to fix it!
Burning Brakes
Joined: Sep 2012
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Nope. I know this to be normal. Both my dad and I have dry sump GS cars, and so does one of my friends. It happens on all those cars, and my tech also said it was normal when I asked him about it last year. So I still say normal, but ultimately taking it to the dealer is what should be done to confirm.
Pro
Joined: Jun 2005
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From: Los Angeles CA
oil pressure sender slowly failing, eventually reading 120+ psi on the dic.
my original sender died after good years of service, but every other gm sender i've had in there afterward has failed in less than 2 weeks.
the aftermarket one from kragen is stout, plus it has lifetime warranty
my original sender died after good years of service, but every other gm sender i've had in there afterward has failed in less than 2 weeks.
the aftermarket one from kragen is stout, plus it has lifetime warranty
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From: Aurora Colorado
UPDATE
So I picked the car up this morning after a 12 hour mid. Started the car up to leave, and it did the exact same thing! PSI pegged at 80! Never done that in 5 months! I was so mad and tired I just drove it straight home. Paperwork said dealer found a "intermittent open in the oil pressure sensor" and replaced the sensor. Also stated N4585 w1.4W add w0.3W diag time. Just not sure what the heck is going on! It spike at startup and upon normal acceleration. At cruising speed, it settles back down to the normal 40 PSI. Again, never did this except for the last 2 times I have driven it! Also, car was spick and span when I dropped it off, and on the drive home, I could see a layer of dust with what lookes like a mechanics mat or something that had been place or dragged on the hood in a semi-circular motion so as to leave a nice dust streak! Not sure if it scrathed the paint or not, to upset to look into that at the moment. Am I a big whiny B@TCH about all of this? Is this normal? Weather was nice, and car was still doing it well after it had warmed up.
So I picked the car up this morning after a 12 hour mid. Started the car up to leave, and it did the exact same thing! PSI pegged at 80! Never done that in 5 months! I was so mad and tired I just drove it straight home. Paperwork said dealer found a "intermittent open in the oil pressure sensor" and replaced the sensor. Also stated N4585 w1.4W add w0.3W diag time. Just not sure what the heck is going on! It spike at startup and upon normal acceleration. At cruising speed, it settles back down to the normal 40 PSI. Again, never did this except for the last 2 times I have driven it! Also, car was spick and span when I dropped it off, and on the drive home, I could see a layer of dust with what lookes like a mechanics mat or something that had been place or dragged on the hood in a semi-circular motion so as to leave a nice dust streak! Not sure if it scrathed the paint or not, to upset to look into that at the moment. Am I a big whiny B@TCH about all of this? Is this normal? Weather was nice, and car was still doing it well after it had warmed up.
Burning Brakes
Joined: Sep 2012
Posts: 974
Likes: 1
UPDATE
So I picked the car up this morning after a 12 hour mid. Started the car up to leave, and it did the exact same thing! PSI pegged at 80! Never done that in 5 months! I was so mad and tired I just drove it straight home. Paperwork said dealer found a "intermittent open in the oil pressure sensor" and replaced the sensor. Also stated N4585 w1.4W add w0.3W diag time. Just not sure what the heck is going on! It spike at startup and upon normal acceleration. At cruising speed, it settles back down to the normal 40 PSI. Again, never did this except for the last 2 times I have driven it! Also, car was spick and span when I dropped it off, and on the drive home, I could see a layer of dust with what lookes like a mechanics mat or something that had been place or dragged on the hood in a semi-circular motion so as to leave a nice dust streak! Not sure if it scrathed the paint or not, to upset to look into that at the moment. Am I a big whiny B@TCH about all of this? Is this normal? Weather was nice, and car was still doing it well after it had warmed up.
So I picked the car up this morning after a 12 hour mid. Started the car up to leave, and it did the exact same thing! PSI pegged at 80! Never done that in 5 months! I was so mad and tired I just drove it straight home. Paperwork said dealer found a "intermittent open in the oil pressure sensor" and replaced the sensor. Also stated N4585 w1.4W add w0.3W diag time. Just not sure what the heck is going on! It spike at startup and upon normal acceleration. At cruising speed, it settles back down to the normal 40 PSI. Again, never did this except for the last 2 times I have driven it! Also, car was spick and span when I dropped it off, and on the drive home, I could see a layer of dust with what lookes like a mechanics mat or something that had been place or dragged on the hood in a semi-circular motion so as to leave a nice dust streak! Not sure if it scrathed the paint or not, to upset to look into that at the moment. Am I a big whiny B@TCH about all of this? Is this normal? Weather was nice, and car was still doing it well after it had warmed up.
Safety Car
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MilehiDenver, is your vette a dry sump engine? I lost track during the reading.......
Most of the folks replying have dry sumps (as I do), and they peg the needle frequently, when the oil is cooler.
But I had a wet sump LS3, and it would never do it.
Most of the folks replying have dry sumps (as I do), and they peg the needle frequently, when the oil is cooler.
But I had a wet sump LS3, and it would never do it.
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Joined: Oct 2011
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From: Aurora Colorado
Good to here that it is normal. Still weird that I never saw this happen until last week. Not sure what the dealer replacing a bad sensor meant if nothing changed with the way it has been reading it out! Guess I will let it go now. Thanks for the responses!