Oil Pump/Pressure ?

[Rado]

2015 PENTASTAR V6
The Oil pressure on a cold start up average 90/95 PSI then drops to 35/45 so good there !
Over the past couple days Cold the Oil Pressure starts at 40 PSI (I know a OK pressure) then as it is warming up moves to about 90 PSI the drops as it heats up . again normal. I know it is a 2 stage pu,p so could the high pressure side be sticking ? Or ???
Thanks and I assume it will be covered by warranty if the oil pump is going, I have 52k plus extra warranty !

 

[U&A]

I dont know much about the V6 but 90-95 PSI. !!!

Good lord thats high by any means for a street car with 20w oil in it. My 6.4 with 40w wont hardly see mid 70’s when the rpms are around 3,500 RPM’s.


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[HammerHead]

Someone with the V6 asked the same thing a few months ago on this forum and the other V6 owners are experiencing that same thing you are. 90-95 PSI; seems crazy high to me but I'm rocking the 6.4.

 

[Rado]

Yea 90 PSI is normal from what I hear about the Pentstar! My question is before when cold would start out at 90 PSI and drop to 35/45 when warm.. Now Cold starts at 35/40 psi for a minute or so then goes to the 90 PSI and drop when warm, My oil pump is a 2 stage if I am saying that right. wondering if maybe the 2nd stage is sticking a little

Thanks for you replies

 

[Fitz-0518]

"I think" variable pressure pump is what others have said FCA is specking for many of their motors today. The 2018 6.4 clearly has a variable pressure pump/system. But,,,I have to agree 90lbs makes you wonder why???

 

[U&A]

On the V6
Are they electric driven oil pumps or driven by the belt?


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[Rado]

Yea 90 PSI is high to me but normal on the Penastar ! I am used to 40 PSI being the norm,, As for how the pump is run ?? Good question and I do not know ! But will see if I can find out

 

[U&A]

Im betting electric by the sounds of it.

If so, that sucks.


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