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Old 06-28-2009, 09:24 PM   #1
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V6 - It just isn't normal
 
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Wacky Oil Pressure reading on 2LT

I've been noticing my oil pressure spike up to 65 to 70psi at times. Holds there for a few seconds then drops back down. Not under load or anything. Last time I noticed I was just backing out of a driveway. Is this normal? Anybody else seeing this? Its usually about 35 to 40 when driving. I've seen it spike up at random. Seems to be nothing to account for it.

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Old 06-28-2009, 09:31 PM   #2
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when cold? or warm?
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Old 06-28-2009, 09:42 PM   #3
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V6 - It just isn't normal
 
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Both. Did it cold backing out of a driveway. Just going down the road at normal speed after warm. I just noticed it yesterday but didnt think too much about it. Gonna keep a closer eye on it till I know whats up.
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Old 06-28-2009, 10:40 PM   #4
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wow thats odd. Mine only spikes up when its under load. You should maybe get that checked out
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Old 06-29-2009, 07:20 AM   #5
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At start up mine goes all the way up for about 20 sec. Once idle drops so does oil pressure. After that I have not seen it spike.
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Old 06-29-2009, 07:58 AM   #6
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I noticed mine spike a couple times too, though both times were when the AC was running. I still thought it was strange how it would be sitting around 40 then jump up to 65 for a few minutes and fall back down.
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Old 06-29-2009, 09:17 AM   #7
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Should be ok. I think they call it dry sump. Correct me if wrong.

The v6 actually is more technically advanced than the LS3 in some aspects.
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Old 06-29-2009, 09:55 AM   #8
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Something to do with the oil squirters maybe? Someone on here, I think it was MadMaxx said that was a difference between the LY7 vs LLT. the LY7 didn't have them
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Old 07-01-2009, 12:21 PM   #9
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Mine does this (spikes up to 70psi) above 2K rpm until the Oil Temp reaches 180...
I suspect it is deliberately designed his way... (I hope so at least)
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Old 07-02-2009, 03:25 PM   #10
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yes mine to . 2lt rs cgm . think its norm car runs fine but did notice the spike.
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Old 07-02-2009, 03:52 PM   #11
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V6 - It just isn't normal
 
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Thanks for the input guys. Sounds like its a normal thing with you others noticing it too. Just wanted to make sure it wasn't just me. I guess its a lot better than LOW pressure now isn't it? Maybe with the amount of parts in the valve train they wanted to make sure it wouldn't be lacking oil. With more information (gauges) you get more questions.
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Old 07-02-2009, 10:59 PM   #12
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interesting
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Old 07-04-2009, 10:35 PM   #13
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Mine landed in the drive way tonight with 400 miles on it .We broke it in around Vancouver before we headed out on the highway. Took care all the way with varied speeds and RPM. All was well. Turned it off and 10 minutes later when showing our son the car we got an engine light, them we noticed the oil pressure under load tops out at the very end of the gauge in the cluster, but when you idle it falls to the mid range.

Check engine is on now after every start. No message on the DIC.

Checked the oil level....was down 1/3 qt.

What do I check next?
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Old 07-04-2009, 11:02 PM   #14
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V6 - It just isn't normal
 
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Hit the Onstar and ask them for a diagnostic. They will tell you why its on
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Old 07-04-2009, 11:24 PM   #15
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Originally Posted by OUR72GTO View Post
Mine landed in the drive way tonight with 400 miles on it .We broke it in around Vancouver before we headed out on the highway. Took care all the way with varied speeds and RPM. All was well. Turned it off and 10 minutes later when showing our son the car we got an engine light, them we noticed the oil pressure under load tops out at the very end of the gauge in the cluster, but when you idle it falls to the mid range.

Check engine is on now after every start. No message on the DIC.

Checked the oil level....was down 1/3 qt.

What do I check next?
Yep....my engine light came on too. Mine had to do with fuel or vapor emissions or in other words the gas cap or vapor set my sensor off according to the Onstar diognogstic. I ran by AutoZone and had them reset it and it has not been on since. I am sure it will be something minor as these things are sooo sensitive. Let us know what Onstar says on the diognostic...would be curious if it was similar to my situation.
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Old 07-05-2009, 10:53 AM   #16
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It sounds like the sending unit is smoking crack.
Either that or something in the harness could be causing a voltage offset in the 5v ref or ground.
Oil pressure should follow rpm to the tune of ~10psi/1K rev. it should drop as a whole when the oil temp comes up. If your just running along and it's popping up and down without changing rpm, somthing is most likely wrong with the guage.

I dont think the oil pressure is e-controlled,nor do i believe the piston squirters are thermostatically controlled.
I could be wrong, havent been inside one yet.
Id hedge my bets on it being a electronic issue with the sender.
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Old 07-06-2009, 01:01 PM   #17
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Called Onstar. They have no alerts on my car. Said take it to a dealer.

I've used the local Pontiac dealer for service for 30 years. He advised he can NOT work on CAMARO. IT IS ON THE X LINES list. Chevy can't work on G8/Solstice.
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Old 07-06-2009, 01:57 PM   #18
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Called Onstar. They have no alerts on my car. Said take it to a dealer.

I've used the local Pontiac dealer for service for 30 years. He advised he can NOT work on CAMARO. IT IS ON THE X LINES list. Chevy can't work on G8/Solstice.
Thats really strange. If the lights on they should have been able to tell you why.
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Old 07-11-2009, 07:25 PM   #19
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Dash light has not come back but the Oil Pressure gauge in the 4 pack continues to read high. At Idle it is mid gauge but @ 2000 RPM it is off the end.

Any one else?
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Old 07-11-2009, 08:11 PM   #20
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Quote:
Originally Posted by ChevyBoiler View Post
I noticed mine spike a couple times too, though both times were when the AC was running. I still thought it was strange how it would be sitting around 40 then jump up to 65 for a few minutes and fall back down.
when the ac clutch engages on the compressor, its putting a higher load on the motor and your oil press will go up.

Quote:
Originally Posted by Vash View Post
Should be ok. I think they call it dry sump. Correct me if wrong.

The v6 actually is more technically advanced than the LS3 in some aspects.
the v6 does not have dry sump oiling.



Quote:
Originally Posted by OUR72GTO View Post
Dash light has not come back but the Oil Pressure gauge in the 4 pack continues to read high. At Idle it is mid gauge but @ 2000 RPM it is off the end.

Any one else?

what is your oil level at?
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Old 07-12-2009, 01:34 AM   #21
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Was down 1/4 qt after 400 miles. Now full.

The needle can disappear off the end.
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Old 07-30-2009, 09:28 PM   #22
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Well 3 weeks later and GM will not let me take this to the dealer of my choice.

Was told in week one that the Pontiac service manager could request the Regional Service Manager approve the job. Then in week 2 the regional MGR said no BUT if the local Chevy dealer (not the selling dealer) would approve, the Pontiac dealer could work on it as a "SUB LET" .

The Chevy dealer who screwed me too many times said no in week 3 .

After 3 weeks of calls to Oshawa they now suggest I have it towed to next Chevy dealer 60 miles away.

This is taking all the fun out of new ownership. Did not have these problems with Honda.

Fritz....you said the NEW focus was on customers. All I keep hearing is " policy says".

No where in the presale (9 months) , purchase , or delivery did anyone say this was policy. Selling dealer knew why I was buying 4 hours from home. They did not know and I have for over 20 years taken my Chevys to Pontiac for warranty.

It is not printed in the warranty book...reads the same as my Silverado
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Old 08-03-2009, 06:43 PM   #23
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I just noticed my 2LT doing this yesterday. Any RPM around 2000 and up oil psi will be 70 psi. It will come down to around 30 psi at hot idle. I did not notice this before and I was looking because I had read this thread at the start. Has any one taken it in to have it looked at yet? If so what was the outcome?
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Old 08-03-2009, 08:35 PM   #24
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OK, going out on a limb here, but what the heck right ?

Read the 'Anyone else here take delivery of a V6' in the same forum topic as this topic. Guys there talking about a whistle from the engine compartment.

Tonight I changed the oil on my car and heard the whistle on shutdown. I had the engine cover off and thought I could trace it somewhat to a valve that looks like a PCV valve mounted on top of the intake manifold. The valve was clicking, like an old style PCV valve - it slides up and down, UP allowing airflow past it and DOWN (acting like a check valve) sealing it when no vacuum is present at engine shutdown.
If this is correct and my guess is right and these valves serve the same purpose as predecessor Chevy engines, they provide a positive ventilation for the oil system. I had a '71 V8 Chevy 307 that had a problem with this system. There are PCV valves mounted on the engine valve covers which provide the oil system and oil pan ventilation. Mine clogged, the oil system overpressurized and blew out my oil pan front seal. No real damage, but had to replace the seal - which can be a pain in the rear. Anyway, if the valve I refer to serves the same purpose on the new V6 intake, yours may be stuck closed and allowing the system to overpressurize, giving a high Oil Pressure reading. I can't imagine this valve talks to the engine diagnostics, since there are no wire leads from it, only a single vacuum line, so diagnostics (and subsequently On Star) may not see this problem.

The old style PVC valves were very simple to replace. They just plugged into a rubber seal/grommet on the valve cover. If this is the same design, it may be as easy as replacing that little valve on your car. I started to remove mine tonight just to see, but got some resistance from the insert, so thought perhaps it was not the same ole design. Left it alone. Might be worth checking with a Chevy dealer - any dealer that knows the new Camaro V6 - and ask if this theory holds any water. If so, may be as simple as replacing that valve - all of 2 minutes work.

There are several guys on the other topic that are experiencing the 'whistle', including me. Perhaps there is a batch of restrictive PVC valves and you guys are seeing the first set of associated problems - high Oil Pressure.

Good luck.
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Old 08-04-2009, 09:51 PM   #25
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Cool

Quote:
Originally Posted by calflan View Post
OK, going out on a limb here, but what the heck right ?

Read the 'Anyone else here take delivery of a V6' in the same forum topic as this topic. Guys there talking about a whistle from the engine compartment.

Tonight I changed the oil on my car and heard the whistle on shutdown. I had the engine cover off and thought I could trace it somewhat to a valve that looks like a PCV valve mounted on top of the intake manifold. The valve was clicking, like an old style PCV valve - it slides up and down, UP allowing airflow past it and DOWN (acting like a check valve) sealing it when no vacuum is present at engine shutdown.
If this is correct and my guess is right and these valves serve the same purpose as predecessor Chevy engines, they provide a positive ventilation for the oil system. I had a '71 V8 Chevy 307 that had a problem with this system. There are PCV valves mounted on the engine valve covers which provide the oil system and oil pan ventilation. Mine clogged, the oil system overpressurized and blew out my oil pan front seal. No real damage, but had to replace the seal - which can be a pain in the rear. Anyway, if the valve I refer to serves the same purpose on the new V6 intake, yours may be stuck closed and allowing the system to overpressurize, giving a high Oil Pressure reading. I can't imagine this valve talks to the engine diagnostics, since there are no wire leads from it, only a single vacuum line, so diagnostics (and subsequently On Star) may not see this problem.

The old style PVC valves were very simple to replace. They just plugged into a rubber seal/grommet on the valve cover. If this is the same design, it may be as easy as replacing that little valve on your car. I started to remove mine tonight just to see, but got some resistance from the insert, so thought perhaps it was not the same ole design. Left it alone. Might be worth checking with a Chevy dealer - any dealer that knows the new Camaro V6 - and ask if this theory holds any water. If so, may be as simple as replacing that valve - all of 2 minutes work.

There are several guys on the other topic that are experiencing the 'whistle', including me. Perhaps there is a batch of restrictive PVC valves and you guys are seeing the first set of associated problems - high Oil Pressure.

Good luck.
Well, I heard a whistle the other day, wasn't for long and I couldn't figure out where it was coming from. Heard it the one time and not since.

As for the Oil pressure - at normal acceleration from a stop, it goes up to 70, and when I get to about 40 mph, the gage starts going down and hangs around 50 (ish). If I accelerate above 40 the gage reads higher again then settles back down.

I called Onstar today for a diagnostic while I was driving home and they said nothing showing. If it continues, take it to the dealer to have it checked.

I was wondering if others have noticed this too. Thanks for the info.

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