c5 oil pressure zero! HELP!
Thread Starter
Intermediate
Joined: Feb 2012
Posts: 30
Likes: 0
From: ca
c5 oil pressure zero! HELP!
I have a 2001 corvette coupe. First, the oil level read low the other day. Added about half a quart. Car was fine. Next day, car read low oil pressure. Oil pressure is at zero on both the gauge as well as the DIC. Replaced the oil sensor switch thinking that would solve the problem. It did not solve the problem. Once starting up the car, a lifter tick was noticeable at 1500rpm and higher. Think it is the oil pump...BUT it is hard to believe considering such low mileage on the car. Is there an ongoing issue with GM oil pumps? Could it be something else? Is the only way to reach the oil pump to remove the front cross member? PLEASE PLEASE HELP!
Burning Brakes
Joined: Feb 2006
Posts: 1,177
Likes: 0
From: VALENCIA PA
Fill oil to a little over full on stick just because oil light goes out dosent mean its fine dont run it long until you find the problem it could be very bad if oil levels right..a stop at the corvette hospital is in your future.. dont drive it tow it...
Thread Starter
Intermediate
Joined: Feb 2012
Posts: 30
Likes: 0
From: ca
Oh my God. Please read the full post. The car is not ****ing moving. It is in the drive way. The gauge and the DIC(digital gauage) are both reading zero oil pressure. The oil sensor switch has been replaced and a manual pressure gauge was used to show that indeed no pressure is being pushed. My question is not about the damn gauge or level. My question is if GM has had ongoing issues with their oil pumps because it is really hard to believe that the oil pump has gone out with such low mileage on the car... And if it is possible that it is something else causing the oil pump issue. Neither one of you has given me any type of feasible intellectual response. You are not helping at all. Will the real men please speak up! Thanks!
Burning Brakes
Joined: Feb 2006
Posts: 1,177
Likes: 0
From: VALENCIA PA
Just like a woman 
listen it dosent matter if the car is moving only running no oil pressure under any curcomstance is very bad and not to be speculated about oil pump or not i dont know of any way you can check your pumpi do know you cant handel this yourself based on none of us real men would do it unless expert or better tecnisions the intelectual answer it get it towed to a dealer asafp 
listen it dosent matter if the car is moving only running no oil pressure under any curcomstance is very bad and not to be speculated about oil pump or not i dont know of any way you can check your pumpi do know you cant handel this yourself based on none of us real men would do it unless expert or better tecnisions the intelectual answer it get it towed to a dealer asafp
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Drifting
Joined: Jul 2005
Posts: 1,484
Likes: 27
From: Torrance Calif
The oil level switch has nothing to do with the oil pressure sender.
They are two different parts in two different locations.
If you had zero oil pressure, the car would sound like it was falling apart when being run, not a "tick" at 1500 rpm.
They are two different parts in two different locations.
If you had zero oil pressure, the car would sound like it was falling apart when being run, not a "tick" at 1500 rpm.
Thread Starter
Intermediate
Joined: Feb 2012
Posts: 30
Likes: 0
From: ca
Man ridiculous. The car is not moving, running or anything else. You can check the oil pressure by fitting a manual pressure tester where the oil sensor switch is. You guys keep repeating your nonsensical jibberish! The car has not been driven since the pressure has read zero....what do you think I am? Retarded? lol
Drifting
Joined: Jul 2005
Posts: 1,484
Likes: 27
From: Torrance Calif
Man ridiculous. The car is not moving, running or anything else. You can check the oil pressure by fitting a manual pressure tester where the oil sensor switch is. You guys keep repeating your nonsensical jibberish! The car has not been driven since the pressure has read zero....what do you think I am? Retarded? lol
The oil pressure sender is located at the rear of the intake manifold and sort of a bitch to get at #4.
Last edited by heavymetals; Feb 18, 2012 at 11:31 PM.
Thread Starter
Intermediate
Joined: Feb 2012
Posts: 30
Likes: 0
From: ca
Heavymetals ...I am not talking about the oil level switch. I never said oil level switch. i said oil sensor(pressure switch located behind the intake manifold between the injector runners and the firewall). You are the closest to helping though. The car almost sounds like it is falling apart which is why it leads me to believe it is the oil pump. Are there known issues with the GM oil pumps? It is really hard to believe considering they are submerged fully in oil and my car has such low mileage. Are there known issues or problems causing gm oil pumps to fail?
Burning Brakes
Joined: Feb 2006
Posts: 1,177
Likes: 0
From: VALENCIA PA
you have to learn how to explain yourself miss jiberish ....you never stated the oil level was correctonly the light was out... or if you were running or driving the car the will be no oil pressure without the engine runing go to the local bar for your answers!!!!!!! ..
Drifting
Joined: Jul 2005
Posts: 1,484
Likes: 27
From: Torrance Calif
Heavymetals ...I am not talking about the oil level switch. I never said oil level switch. i said oil sensor(pressure switch located behind the intake manifold between the injector runners and the firewall). You are the closest to helping though. The car almost sounds like it is falling apart which is why it leads me to believe it is the oil pump. Are there known issues with the GM oil pumps? It is really hard to believe considering they are submerged fully in oil and my car has such low mileage. Are there known issues or problems causing gm oil pumps to fail?
The oil level is a switch.
There are some problems with oil pumps sucking an "O" ring and getting blocked up, but you are talking about an 11 year old car, and mileage doesn't matter.
I just had to junk tires that had only 9ki miles on them, but they were 9 years old!
With no pressure you should hear the thing knocking like no tomorrow.
It sounds like you have a handle on it, so could be oil pump or blockage.
Also, the oil pumps are not "submerged" and that doesn't make a difference anyway.
Last edited by heavymetals; Feb 18, 2012 at 11:41 PM.
Melting Slicks
Joined: Jan 2002
Posts: 2,132
Likes: 71
From: SOUTH SHORE Massachusetts
Never assume anything...first thing to do is have your car towed to a garage of your choice...you have no oil pressure, from what you said you used a guage along with replacing the oil pressure switch...ok...so your car is not making oil pressure...call the tow truck and begin your journey of finding out just what has happened. Lifter noise..no oil pressure reading..hello...oil pump.
also to answer your question as I take it,, there is not a history of this happening to this model car. you have a major problem and unfortunately its going to cost you some money to find out what the cause is...I hope this helped in what you were asking.\
also to answer your question as I take it,, there is not a history of this happening to this model car. you have a major problem and unfortunately its going to cost you some money to find out what the cause is...I hope this helped in what you were asking.\
Safety Car
Joined: Aug 2011
Posts: 4,449
Likes: 409
From: Portland OR
Oil Pump 101
This is the oil pump. It's located on the end of the crank behind the front cover.
This is the insides of the pump. Only 3 moving parts.
The very center part is the splined drive on the crank. The next 2 parts are the rotors. The little one spins inside the big one and this is what pumps the oil. I suppose these could break.
The item to the right of the pump is the pressure bypass. If it somehow stuck open, I suppose you could have zero oil pressure.
No matter what, the rack has to moved out of the way, balancer pulled followed by the timing cover.
As was mentioned, it could be a bad o-ring where the pickup tube bolts to the pump. Lower left in the pics.
Ron
This is the insides of the pump. Only 3 moving parts.
The very center part is the splined drive on the crank. The next 2 parts are the rotors. The little one spins inside the big one and this is what pumps the oil. I suppose these could break.
The item to the right of the pump is the pressure bypass. If it somehow stuck open, I suppose you could have zero oil pressure.
No matter what, the rack has to moved out of the way, balancer pulled followed by the timing cover.
As was mentioned, it could be a bad o-ring where the pickup tube bolts to the pump. Lower left in the pics.
Ron
Thread Starter
Intermediate
Joined: Feb 2012
Posts: 30
Likes: 0
From: ca
Yes heavymetals it was a bitch to get to. had to take fuel rails, throttle body and intake manifold just to reach the sensor, replaced the sensor, then manually checked the pressure and it still reads at zero. this is what leads me to believe that it is the pump itself. also hearing ticking from the lifters makes me think its the pump...but the gm pumps are so beefy and i just don't know why it would just all of a sudden fail espcially in a car with such low mileage. are there any recalls or issues? could it be something else? I was thinking possibly the fuel filter could be clogged because it would exhibit similar symptoms...but it just doesnt make sense... also the filter is only 2 weeks old. what else could it be or why would the oil pump just flat out fail ...
Thread Starter
Intermediate
Joined: Feb 2012
Posts: 30
Likes: 0
From: ca
[SIZE="6"]midyear roadster- i am attempting to determine what the problem is, and that is why i am searching for answers on the forum...sorry but not everyone has hundreds to tow and take their car to a shop every time it breaks. some of us actually fix our cars ourself. the car is not getting oil pressure...i am not driving it...no ****.
trackman- please just shut up!
everyone else- please tell trackman to shut up! this guy is a complete idiot and is not helping at all on the forum! [/SIZE]
trackman- please just shut up!
everyone else- please tell trackman to shut up! this guy is a complete idiot and is not helping at all on the forum! [/SIZE]