Psi oil gauge moving a lot, is that normal?
Asked by Ben Feb 26, 2024 at 10:10 PM about the 2012 Cadillac CTS
Question type: Maintenance & Repair
I have a 2012 Cadillac CTS and my psi oil gauge
goes up when I accelerate to about 75 then when I
get to my speed it will go down to 25 to 35 then idle
at 50 but it constantly moves up and down. Is that
normal?
4 Answers
I would have the oil pressure checked with a manual gauge first, some gauge swing is normal for electronic gauges but yours sounds excessive.
The oil pump is driven by the engine. So when you accelerate the oil pump speeds up too and pumps more oil so the pressure goes up. Oil pressure will also be higher when the engine is cold because the oil is thicker. Hope that helps! Jim
GuruDZJBD3 answered 2 months ago
I have a 2010 CTS. Changed spark plugs and coils then the oil pressure gauge maxed out to 100psi when driving and 65 when idling. Any help is appreciated.
Maxing out is usually the sender but I would have it manually checked just to make sure the oil pump pressure bypass didn't get messed up. Too much oil pressure can also damage engine bearings.
