Extremely high oil pressure
Thread Starter
Pro
Joined: Aug 2009
Posts: 580
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From: Fort Lauderdale Florida
Extremely high oil pressure
A few days ago I was driving and I got on the gas a little and let off. All of a sudden my oil pressure was over 100 psi. The only reason I can think this might have happened is a few days before I added a quart of oil because my oil level was down almost to the add line on the dip stick. Can anyone help me out with this problem. I'm thinking about goign to get my oil changed just to make sure that's all fine but I feel like that might now do anything.
Instructor
Joined: Jul 2008
Posts: 183
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From: Pflugerville TX
Oil pressure sensor is going or gone, there are numerous write ups on this issue. It will not hurt the car to drive it with a failed sesnor, I myself would get it replaced as soon as possible. If you are going to change the sensor might as well install a relocation kit in the process.
Last edited by dustinztx; Oct 26, 2009 at 03:09 PM.
Advanced
Joined: Apr 2008
Posts: 80
Likes: 1
From: Ft. Lauderdale Florida
My understanding is a good way to test if the sensor is bad is when the car is parked turn the key to "Run" and see if the oil pressure maxes out. If it does max out then in all likelihood the sensor is bad.
Thread Starter
Pro
Joined: Aug 2009
Posts: 580
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From: Fort Lauderdale Florida
This is exactly what's happening to me. But when I Go to the digital display it shows the psi in excess of 100 psi but when the car is driving the psi rapidly climbs even at super low rpm. When I go back to neutral it slowly drops but still stays at about 95-100 psi. I was looking to try and find some posts about oil pressure sensors but I couldn't find any. Can anyone lead me to some? Also does anyone know about how much a new sensor and relocation cost? Is it DIY?
Racer
Joined: Aug 2005
Posts: 388
Likes: 6
This is exactly what's happening to me. But when I Go to the digital display it shows the psi in excess of 100 psi but when the car is driving the psi rapidly climbs even at super low rpm. When I go back to neutral it slowly drops but still stays at about 95-100 psi. I was looking to try and find some posts about oil pressure sensors but I couldn't find any. Can anyone lead me to some? Also does anyone know about how much a new sensor and relocation cost? Is it DIY?
Instructor
Joined: Jul 2008
Posts: 183
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From: Pflugerville TX
Thread Starter
Pro
Joined: Aug 2009
Posts: 580
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From: Fort Lauderdale Florida
Ok so I think this is a bigger problem than I thought. When I just turned to key to "on" with out turning the car on it was at a normal 40 psi but when I turned it on it immediately went to 88 psi.
Is it possible that the other day when I added oil it caused the pressure to be too high? Any other suggestions on what this could be?
Is it possible that the other day when I added oil it caused the pressure to be too high? Any other suggestions on what this could be?
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Thread Starter
Pro
Joined: Aug 2009
Posts: 580
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From: Fort Lauderdale Florida
I'm thinking my problem has to be when the oil enters the engine. Why else would it be normal then the key is at the on position and then 88+ when I turn the car on and then when I got on the gas it would climb about 100
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
The oil pressure sending unit is going bad and this is a very common issue on all models of the C5. You should see 0psi with the key turned to the on position and the engine not running.. Its impossible to have normal 40 psi without the engine running... It would be like getting a pulse from a person thats been dead for 3 days.. The heart has to be beating to get a pulse the same as an engine (oil pump) has to be running to get a oil pressure reading on the gauge or on the heads up display
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
That what happens when the oil pressure sending unit goes totally go out.. The gauge stays pegged at 130psi. This will happen to SFL very shortly.. As far as I'm concerned its toast already
Last edited by David426; Oct 26, 2009 at 05:30 PM.
Thread Starter
Pro
Joined: Aug 2009
Posts: 580
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From: Fort Lauderdale Florida
[QUOTE=David426;1571947190]The oil pressure sending unit is going bad and this is a very common issue on all models of the C5. You should see 0psi with the key turned to the on position and the engine not running.. Its impossible to have normal 40 psi without the engine running... It would be like getting a pulse from a person thats been dead for 3 days.. The heart has to be beating to get a pulse the same as an engine (oil pump) has to be running to get a oil pressure reading on the gauge or on the heads up display[/QUOT
Why didn't I realize that?
Ok so I guess that means it's also safe to drive since it's just the sensor. Hopefully I can pick one up soon. And put it in.
Why didn't I realize that?
Ok so I guess that means it's also safe to drive since it's just the sensor. Hopefully I can pick one up soon. And put it in.
Race Director
Joined: Apr 2009
Posts: 10,581
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From: SE TEX
Good luck OP
Racer
Joined: Sep 2005
Posts: 391
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From: Palm Coast FL
