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Old 04-15-2015, 10:02 PM   #1
Scooby Newbie
Member#: 414701
Join Date: Feb 2015
Default Oil pressure gauge wrx 2012

Just curious but after reading a few posts my concern that my psi fluctuates so much went away.Usually I'm anywhere between 80-100 psi.At slow idle 20-60 seems to be the norm.
My actual question is a two part 1: is it normal when I turn the car off the gauge reads 20psi? 2: is it normal the gauge makes this irritating grinding noise when the needle moves?
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Old 04-15-2015, 10:53 PM   #2
Scooby Newbie
Member#: 363892
Join Date: Jul 2013
Chapter/Region: BAIC
Location: SF Bay
2013 WRX Hatch Prem


what kind of gauge? Where are you plugged in (underneath the alternator or oil sandwich plate)?

I have a prosport evo gauge coming from the stock oil pressure plug.

Start up in the morning: 90-100 PSI
At idle warmed up and driving around (22-25 PSI)
While cruising, anywhere from 80-90
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Old 04-15-2015, 10:59 PM   #3
Scooby Specialist
Member#: 350408
Join Date: Mar 2013
Chapter/Region: NESIC
Location: Windsor Locks, Ct
2012 wrx


^^^basically same for me. Average about 20 psi at warm idle, 100 psi cold start, 80 psi 2.5-3k rpm warm.
Defi racer below alternator.

Your grinding noise is (damn near positive) not coming from the gauge. Its just a gauge. Don't see how it would make a grinding sound. Post a video of the sound if you can.
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