Possible oil pressure issue - Page 3

ZX-10R · 05-14-2021, 01:50 PM

Quote:

Originally Posted by AZ_1LE

Just keep in mind that we don't have normal old-school pumps in our engines which build pressure linearly with RPMs like you might be used to. We have variable vane pumps which maintain certain pressure levels and is controlled by an electronic solenoid, mainly to improve gas mileage. GM determined that there's no real need to have 70+ PSI of oil while you're cruising on the highway, but if you put the engine under a load, the solenoid will move the internal "parts" of the oil pump to make it start producing higher pressure.

As always, increased complexity increases potential for problems. Is the housing cracking or other parts?

Quote:

It's kind of an ingenious design, but the earlier versions of it were prone to cracking as we all know. I do kind of wish they had just put in a regular pump, but, EPA........

Yeah the same regulations that brought you wonderful innovations such as AFM

SFV1LE · 05-14-2021, 01:51 PM

Quote:

Originally Posted by Spaceme1117

I purchased a used 2017 2SS about 2 months ago. CarFax showed that it had to have the oil pump replaced.

Did you get a discount based on the oil pump issue?

Dave777 · 05-15-2021, 08:28 AM

Does the LT4 in the Z06 Vettes have any problems ?

I do know the Z06 has a dry sump oil system.

nighttowl · 05-15-2021, 10:54 AM

Quote:

Originally Posted by Dave777

Does the LT4 in the Z06 Vettes have any problems ?

I do know the Z06 has a dry sump oil system.

There is a thread on a corvette forum with oil pump problems for the LT4.

nighttowl · 05-17-2021, 01:32 PM

I just recieved a call from the dealership, they are going to open a case with GM to see what to do.

Trak-Toy · 05-17-2021, 06:54 PM

Quote:

Originally Posted by nighttowl

I just recieved a call from the dealership, they are going to open a case with GM to see what to do.

Good to hear. At least now it’s been documented as a ‘potential’ issue with your specific car for warranty purposes. Let us know how it goes. May help some of us in the future.

ZX-10R · 05-18-2021, 08:51 AM

Ideally they would replace the pump before it actually fails, it will be interesting to see how this plays out. There should be some threshold pressure below where they say it's cooked (e.g. 25 psi hot idle)

ZLE dude · 05-18-2021, 09:25 AM

Quote:

Originally Posted by ZX-10R

Ideally they would replace the pump before it actually fails, it will be interesting to see how this plays out. There should be some threshold pressure below where they say it's cooked (e.g. 25 psi hot idle)

100% agree with this statement. I've been trending my oil pressure for the past 15K miles and it's never been below 27psi hot idle...EVER. That's why I have an alarm setup if my oil pressure is ever below 27 because that would be a significant change to the norm and indicate I have an issue starting. That's one thing I like about external gauges that can be handy instead of the silly dash gauge.

nighttowl · 05-19-2021, 10:10 PM

Gm is sending a field engineer out to look at it, although they did not say when.
I hope I dont get screwed...

LT4Greg · 05-20-2021, 06:20 AM

You won’t get screwed! You still have drivetrain warranty on your 2018 and if it fails they will replace it. I hope the best for you.

nighttowl · 05-21-2021, 06:14 PM

Just picked up the car.
They changed the oil in it and pushed it out the door.
no change, 21 PSI hot oil pressure at idle.
They said that GM low limit is 22 psi at 1000 Rpm, so im good to go.

I guess ill either sell it (because there is clearly nothing wrong with it) or drive it until it stops running.

Chutzpah · 05-21-2021, 07:05 PM

Quote:

Originally Posted by nighttowl

Just picked up the car.
They changed the oil in it and pushed it out the door.
no change, 21 PSI hot oil pressure at idle.
They said that GM low limit is 22 psi at 1000 Rpm, so im good to go.

I guess ill either sell it (because there is clearly nothing wrong with it) or drive it until it stops running.

Hmm... that’s too bad. I just tried to put myself in your shoes... Not certain what I’d do.

nighttowl · 05-21-2021, 07:24 PM

Quote:

Originally Posted by Chutzpah

Hmm... that’s too bad. I just tried to put myself in your shoes... Not certain what I’d do.

Could make some sarcastic license plate images to display your frustration.

LT4Greg · 05-21-2021, 08:21 PM

Quote:

Originally Posted by nighttowl

Just picked up the car.
They changed the oil in it and pushed it out the door.
no change, 21 PSI hot oil pressure at idle.
They said that GM low limit is 22 psi at 1000 Rpm, so im good to go.

I guess ill either sell it (because there is clearly nothing wrong with it) or drive it until it stops running.

Drive it till it dies nighttowl! That’s what I’m going to do with my 2017!

05-17-2021, 01:32 PM	#33
nighttowl Sarcasm loading -------- Drives: 2018 ZL1 1LE Join Date: Dec 2011 Location: TX Posts: 1,808 View My Garage	I just recieved a call from the dealership, they are going to open a case with GM to see what to do. __________________ "The salesman actually told me to stop getting it sideways during the test drive" 2018 MBM ZL1 1LE - Stock 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD

05-19-2021, 10:10 PM	#37
nighttowl Sarcasm loading -------- Drives: 2018 ZL1 1LE Join Date: Dec 2011 Location: TX Posts: 1,808 View My Garage	Gm is sending a field engineer out to look at it, although they did not say when. I hope I dont get screwed... __________________ "The salesman actually told me to stop getting it sideways during the test drive" 2018 MBM ZL1 1LE - Stock 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD

05-20-2021, 06:20 AM	#38
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,813	You won’t get screwed! You still have drivetrain warranty on your 2018 and if it fails they will replace it. I hope the best for you. __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

05-21-2021, 06:14 PM	#39
nighttowl Sarcasm loading -------- Drives: 2018 ZL1 1LE Join Date: Dec 2011 Location: TX Posts: 1,808 View My Garage	Just picked up the car. They changed the oil in it and pushed it out the door. no change, 21 PSI hot oil pressure at idle. They said that GM low limit is 22 psi at 1000 Rpm, so im good to go. I guess ill either sell it (because there is clearly nothing wrong with it) or drive it until it stops running. __________________ "The salesman actually told me to stop getting it sideways during the test drive" 2018 MBM ZL1 1LE - Stock 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD

05-15-2021, 08:28 AM	#31
Dave777 Drives: 1985 Z28 Join Date: Aug 2020 Location: Florida Posts: 125	Does the LT4 in the Z06 Vettes have any problems ? I do know the Z06 has a dry sump oil system.

05-18-2021, 08:51 AM	#35
ZX-10R Drives: 2019 ZL1 Riverside Join Date: Apr 2020 Location: Charlotte, NC Posts: 1,138	Ideally they would replace the pump before it actually fails, it will be interesting to see how this plays out. There should be some threshold pressure below where they say it's cooked (e.g. 25 psi hot idle)

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