23lbs oil pressure?
Thread Starter
Racer
Joined: Jul 2006
Posts: 354
Likes: 0
From: San bernardino ca
23lbs oil pressure?
is 23lbs of oil pressure after warm up at idle ok? my car has 7k on the milage has not yet had an oil change. meter shows 25% life still. i ask this cuase i have always heard a rattle from the engine like a bearing. and when new it would hold 40lbs of pressure. what does chevy say is acceptable? when i brought up the noise they said it was pinging. i called b.s. but have no facts. also have electrical problem they could not reproduce even thou i still have them. i was lucky enough to show formen one day and he has now witnessed it. the roof make crackle noises. which was not there when i first bought it or for the first 4k miles. and they couldnt get the ashtray to fall open. so it was like i imagined all this. but with forman witnessing and engine dropping oil pressure i think i have something to stand on. there is no way i want a 50k p.o.s. that the wife wont even drive. so after this visit i think i should lawyer up for lemon law. if they say it couldnt be reproduced. need info, thoughts and input. this will be the 2nd time dropping it off for same problems.
Instructor
Joined: Sep 2003
Posts: 113
Likes: 0
From: Beverly Hills Ca
Same Type of Problem
Hey Guys,
Sorry to enter your post, but I have a similar concern.
Just got a brand new C6 last week. My oil pressure drops to 28 when the car is on but not moving. When I get on the gas it heads up to 50.
It has been like this since I drove it off the lot. I have 150 miles on it now and it is still the same.
Is this normal? My C5 would never drop below 35.
Any input would be appreciated.
Thanks!
Sorry to enter your post, but I have a similar concern.
Just got a brand new C6 last week. My oil pressure drops to 28 when the car is on but not moving. When I get on the gas it heads up to 50.
It has been like this since I drove it off the lot. I have 150 miles on it now and it is still the same.
Is this normal? My C5 would never drop below 35.
Any input would be appreciated.
Thanks!
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
The LS2 oil pump is a low pressure, high volumn pump. 28 pounds at operating temp at idle is ok and anything over 40-ish at speed is normal. It took me a long time to get use to these kinds of oil pressures, and, I'll never get use to 240 degree coolant temps. That's the reason there is a Ron Davis radiator and a Meziere pump sitting in the garage, awaiting the wrenches!
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Originally Posted by meaniam
is 23lbs of oil pressure after warm up at idle ok? my car has 7k on the milage has not yet had an oil change. meter shows 25% life still. i ask this cuase i have always heard a rattle from the engine like a bearing. and when new it would hold 40lbs of pressure. what does chevy say is acceptable? when i brought up the noise they said it was pinging. i called b.s. but have no facts. also have electrical problem they could not reproduce even thou i still have them. i was lucky enough to show formen one day and he has now witnessed it. the roof make crackle noises. which was not there when i first bought it or for the first 4k miles. and they couldnt get the ashtray to fall open. so it was like i imagined all this. but with forman witnessing and engine dropping oil pressure i think i have something to stand on. there is no way i want a 50k p.o.s. that the wife wont even drive. so after this visit i think i should lawyer up for lemon law. if they say it couldnt be reproduced. need info, thoughts and input. this will be the 2nd time dropping it off for same problems.
Le Mans Master
Joined: Oct 2005
Posts: 6,635
Likes: 0
From: Fallston Maryland
I have owned probably over 25 Gm vehicles and currently own 9. From my recollection they have all had the same behavior. Low pressure at idle. Once you give the least amount of throttle the pressure increases a lot.
Dan
Dan
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Originally Posted by C5 Rider
Just got a brand new C6 last week. My oil pressure drops to 28 when the car is on but not moving. When I get on the gas it heads up to 50.
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
I'd make sure the dealership checks the roof panel for delamination....stress noises coming from the roof panel is a potential symptom.
Does the engine "pinging" diminish as the engine warms up? Do you always run high octane gas?
Hopefully there aren't any serious problems but I'd keep after the dealership if the symptoms persist. It sounds like you're still a long way off from any type of a claim under the 'Lemon Law' statutes.
Does the engine "pinging" diminish as the engine warms up? Do you always run high octane gas?
Hopefully there aren't any serious problems but I'd keep after the dealership if the symptoms persist. It sounds like you're still a long way off from any type of a claim under the 'Lemon Law' statutes.
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Le Mans Master
Joined: Aug 2004
Posts: 5,259
Likes: 16
From: Monroe Township New Jersey
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
St. Jude donor in memory of jpee '14
Originally Posted by dennis50nj
its right but what are u guys auto temps a4 an a6
I'll bet that 3800 stall speed converter makes your auto temps much hotter than mine even with the new hyden cooler
Mine usually runs somewhere around 160. On our long hot summer trips to Florida in traffic the temps get up to 200 
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
Originally Posted by Tommy D
Hey Dennis
I'll bet that 3800 stall speed converter makes your auto temps much hotter than mine even with the new hyden cooler Mine usually runs somewhere around 160. On our long hot summer trips to Florida in traffic the temps get up to 200
I'll bet that 3800 stall speed converter makes your auto temps much hotter than mine even with the new hyden cooler
Mine usually runs somewhere around 160. On our long hot summer trips to Florida in traffic the temps get up to 200 
Safety Car
Joined: Jun 2004
Posts: 3,563
Likes: 2
From: Dallas Tx
Normal and Normal. For the first one at 23, if your DIC says 25% you've got a lot of miles on that oil. It's going to be thinned out with a lot of condensates and combustion by-products. Do an oil change, I'll bet it looks like black water coming out. Fresh oil will give you a couple more psi.
Melting Slicks
Joined: Jun 2006
Posts: 2,208
Likes: 1
Originally Posted by VET4LES
Sounds normal.
Mine never goes below 30-35 psi, and runs about 40-43 warmed up at highway speeds. I know the L-98 was normal at 6 psi at idle, and believe the LS1 was ok down to about 12-15. I don't think you have a problem until you break below 20, hot at idle. 
Le Mans Master
Joined: Aug 2004
Posts: 5,259
Likes: 16
From: Monroe Township New Jersey
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
St. Jude donor in memory of jpee '14
Originally Posted by dennis50nj
Tommy when it was hot out this summer 95 t0 97 it ran 207 to Delaware and back without a cooler dealer screwed my trans on a tsb. new trans and new radiator and cooler now it runs 245 and they act like thats fine.
207 degrees in the summer heat isn't terrible. But 245 with a cooler, that is another story. I guess you will be getting another new trans soon. You might as well check out Level 10, GER or one of the other performance trans shops. Running 11 second quarter mile times and running 245 degrees with the extra cooler.......... your stock unit will be toast.
I can think of several issues that may cause high temps but I am sure the installer of your 3800 stall speed converter knew what he was doing. They will run hotter than normal but usually a large extra cooler will enable the temps to go back to stock levels. Good luck
