Low/No Oil Pressure
Thread Starter
Burning Brakes
Joined: May 2005
Posts: 797
Likes: 10
From: Upper West Side, NY Very Downtown Houston, TX
Well I tapped a guage into an oil filter and confirmed the worst . . . that the guage on my dash is accurate
moreover, put a second filetr on the car without any oil in in, started it for a few seconds and the pump was only able to put a few drops into the filter . . .
next step take it into warranty
it goes without saying that im really upset about this . . . the car only has 7k on it . . . its the first new car i've evered owned and it took me years to get
nevertheless, thank you all for your kind advice and i will keep you posted on my experience with the dealer
moreover, put a second filetr on the car without any oil in in, started it for a few seconds and the pump was only able to put a few drops into the filter . . .
next step take it into warranty
it goes without saying that im really upset about this . . . the car only has 7k on it . . . its the first new car i've evered owned and it took me years to get
nevertheless, thank you all for your kind advice and i will keep you posted on my experience with the dealer
Thread Starter
Burning Brakes
Joined: May 2005
Posts: 797
Likes: 10
From: Upper West Side, NY Very Downtown Houston, TX
could it be that the motor isnt making noise (yet) b/c lifters are still pumped up with oil and bearings may still be good?
i put a filter on w/ out any oil in the filter and ran her for 10-15 sec. Unscrewed the fileter and no oil (or a trace amount) in the filter. Guage indicating 0 psi oil pressure. But no noise.
this really sux . . . i just hope the dealer and gm do me well . . .
i put a filter on w/ out any oil in the filter and ran her for 10-15 sec. Unscrewed the fileter and no oil (or a trace amount) in the filter. Guage indicating 0 psi oil pressure. But no noise.
this really sux . . . i just hope the dealer and gm do me well . . .
Safety Car
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
Originally Posted by fallen
Well I tapped a guage into an oil filter and confirmed the worst . . . that the guage on my dash is accurate
moreover, put a second filetr on the car without any oil in in, started it for a few seconds and the pump was only able to put a few drops into the filter . . .
next step take it into warranty
it goes without saying that im really upset about this . . . the car only has 7k on it . . . its the first new car i've evered owned and it took me years to get
nevertheless, thank you all for your kind advice and i will keep you posted on my experience with the dealer
moreover, put a second filetr on the car without any oil in in, started it for a few seconds and the pump was only able to put a few drops into the filter . . .
next step take it into warranty
it goes without saying that im really upset about this . . . the car only has 7k on it . . . its the first new car i've evered owned and it took me years to get
nevertheless, thank you all for your kind advice and i will keep you posted on my experience with the dealer
I hope the dealer does the Right thing in this case and replaces your engine.
Racer
Joined: Sep 1999
Posts: 346
Likes: 1
From: Orlando FL
Well, since it would appear your engine may have the same issue some of the 2000's had, I might make a couple of comments. Mine as I mentioned did not make much noise (no excessive lifter noise). Mine also seemed to run fine after the pressure came up (via a short rev). My oil pump was replaced under warranty. No bearings were replaced (no new engine). They did what you did to diagnose it (well, they have a special tool, but it's the same result). After the repair was done, there were no unusual readings in the oil analysis (which I have done at each oil change I do). What does all this mean??? I'm not sure. A logical mind would deduce that there has been additional wear on the bearings due to lack of lubrication. How much wear? I don't know. However, each time you start your car there is some small period of time where there is little or no oil pressure (it obviously has to build up) unless you have an accusump or aux oil pump (my brother in-law has one for his truck - swears by it). I suspect the dealer will just replace the pump and send you on your way. However, you might get them to extend your engine warranty by some amount to prevent you from having to spend money later (if something related ever does happen). I suspect you would have to get quite vocal though to get that 
but apparently some have.
but apparently some have.
Thread Starter
Burning Brakes
Joined: May 2005
Posts: 797
Likes: 10
From: Upper West Side, NY Very Downtown Houston, TX
Well I have the pieces of metal that came out of my oil pan as well as the oil itself and sure as hell I am going to demand a new motor from the getgo.
At the very very least all bearings should be inspected. period. And while insepecting why not change them?
But I can't worry about probs that have not yet arisen.
I will keep you all posted and again thanks for everyones' help.
BTW--how long was your car out of commission due to pump change?
At the very very least all bearings should be inspected. period. And while insepecting why not change them?
But I can't worry about probs that have not yet arisen.
I will keep you all posted and again thanks for everyones' help.
BTW--how long was your car out of commission due to pump change?
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Racer
Joined: Sep 1999
Posts: 346
Likes: 1
From: Orlando FL
My car was only gone for a day or two while they changed the oil pump (I don't actually remember how long - just that it was short). I think both that and what they will do for you depends on the dealer. If you have a good one - they will do you right. A really bad one will try to do bad things 
Good luck, and I hope they give you a new one 
Good luck, and I hope they give you a new one
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Well, good for me my intuition skills are still in working order, bad for you..
I must say, I'm at a loss as to how these pumps can "fail". I have in my hand an LS6 pump I'm going to install during my cam swap, and it looks pretty darn simple.. Really only 2 moving parts..
Anyway, good luck with the dealer. Hope and pray they are competent, or you will end up with "new" problems for your trouble.
IMO, they won't offer you a new engine..
I must say, I'm at a loss as to how these pumps can "fail". I have in my hand an LS6 pump I'm going to install during my cam swap, and it looks pretty darn simple.. Really only 2 moving parts..
Anyway, good luck with the dealer. Hope and pray they are competent, or you will end up with "new" problems for your trouble.
IMO, they won't offer you a new engine..
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Originally Posted by fallen
Well I have the pieces of metal that came out of my oil pan as well as the oil itself and sure as hell I am going to demand a new motor from the getgo.
Personally IMO, your engine should be just fine, you would have to be running for a while at idle (several minutes) before you had any lasting bearing damage but now if this were to happen at wide open throttle ...you'd only have seconds.
Thread Starter
Burning Brakes
Joined: May 2005
Posts: 797
Likes: 10
From: Upper West Side, NY Very Downtown Houston, TX
The pieces I have are silver in color, if it were bearing wouldn't I have a bronze mist in the oil??
I'm hoping the pieces are part of the pump . . .
I'm hoping the pieces are part of the pump . . .
Racer
Joined: Feb 2004
Posts: 301
Likes: 0
From: Vista CA
Originally Posted by fallen
First, I would like to introduce myself and say hello to everyone.
Second, I kindly ask for advice.
I have an 04 Z06 with about 7,500 miles on her. Mods are lg longtubes and vararam.
The other day I drove my car around and redlined it a few times. After I shut her down and when I went to restart I got the low oil pressure message on the DIC. I reved it a little and the message went away.
However, the DIC indicated that my oil pressure was 18 psi at idle, which is low compared to my father's 01 zo6.
shut her down again and then restarted. now dic indicating oil pressure was 0. No noise could be heard. Let her idle with 0 for about 10 seconds and the guage didn't move. Reved it a little (1500 rpm) and pressure came up. After reving, the guage indicated 18 psi at idle.
What is interesting is that a 2k rpm she made an indicated 40-45 psi (what my dad's car makes).
Checked oil and filter. Found very small pieces of metal in oil and when I cut the filter open there were only 4 tiny specs of metal in there.
Filled her up with oil and no indicated pressure at idle. Rev it, the indicated pressure come up and it now has 18 psi at idle.
Before I posted I did my homework and learned that the sender is a POS. However, it appears from people's experiences that sender failure results in a pegged or high oil pressure.
Could my symptoms also be due to a bad sender?
If its mechanical, could it be a stuck by-pass valve on the pump?
If it were low pressure due to failed bearings, I think I would have seen a lot more metal in the oil. Plus this does not explain how I could have 0 at idle, rev the car and then have 18 psi at idle.
Anyway, I will put a mechanical guage on her Friday to verify pressure.
thanks in advance for your input.
Second, I kindly ask for advice.
I have an 04 Z06 with about 7,500 miles on her. Mods are lg longtubes and vararam.
The other day I drove my car around and redlined it a few times. After I shut her down and when I went to restart I got the low oil pressure message on the DIC. I reved it a little and the message went away.
However, the DIC indicated that my oil pressure was 18 psi at idle, which is low compared to my father's 01 zo6.
shut her down again and then restarted. now dic indicating oil pressure was 0. No noise could be heard. Let her idle with 0 for about 10 seconds and the guage didn't move. Reved it a little (1500 rpm) and pressure came up. After reving, the guage indicated 18 psi at idle.
What is interesting is that a 2k rpm she made an indicated 40-45 psi (what my dad's car makes).
Checked oil and filter. Found very small pieces of metal in oil and when I cut the filter open there were only 4 tiny specs of metal in there.
Filled her up with oil and no indicated pressure at idle. Rev it, the indicated pressure come up and it now has 18 psi at idle.
Before I posted I did my homework and learned that the sender is a POS. However, it appears from people's experiences that sender failure results in a pegged or high oil pressure.
Could my symptoms also be due to a bad sender?
If its mechanical, could it be a stuck by-pass valve on the pump?
If it were low pressure due to failed bearings, I think I would have seen a lot more metal in the oil. Plus this does not explain how I could have 0 at idle, rev the car and then have 18 psi at idle.
Anyway, I will put a mechanical guage on her Friday to verify pressure.
thanks in advance for your input.
Racer
Joined: Feb 2004
Posts: 301
Likes: 0
From: Vista CA
same deal here. Just dropped the vette off at the dealer this morning. got the call around 3pm, BAD OIL PUMP CHECK VALVE so on with the new oil pump which I just happened to have sitting on the front seat. I bought it so I would'nt have to wait for the part BUT I forgot the seals and gaskets so now my car is stuck there till Tuesday when the parts get there. 
Mine to failed at 7000 mile. So 6300 rpms and bam oil pump thakes a dump? 
Mine to failed at 7000 mile. So 6300 rpms and bam oil pump thakes a dump?
Last edited by rarfinacial; Jun 3, 2005 at 12:06 AM.
