Oil Pressure
Thread Starter
Le Mans Master
Joined: Feb 2011
Posts: 6,707
Likes: 173
From: Chatham NY
St. Jude Donor '13, '15-'16,'18 thru '25
Oil Pressure
On Saturday I went with a buddy to look at a '98 6sp with 63k ( he rolled his 93 ruby a few weeks back and wants another) Anyway the car is clean appears to be nicely maintained and he can buy it for 13300. My problem is the oil pressure never got above 22-23 psi no matter how high it revved and at idle stayed right around 10psi. He didn't buy it, but the dealer called today and said they changed the sending unit and oil and it now runs around 30psi. He wants to go pick it up Wednesday so, does that sound like a sending unit problem or something with the motor itself? I am still skeptical at 30psi. Thanks for any ideas.
Thread Starter
Le Mans Master
Joined: Feb 2011
Posts: 6,707
Likes: 173
From: Chatham NY
St. Jude Donor '13, '15-'16,'18 thru '25
He has had many vettes over the years but he is doing all the wrong things, buying from a wholesale dealer, only the second one he has test driven, no warranty ( per the dealer he is out of state so they can't) and clearly not thinking. He did hit his head in the rollover so maybe that explains it. I tried to sway him but he is on a mission. Thanks for your help guys if this turns to a horror story I will let you know.
Le Mans Master
Joined: Nov 2009
Posts: 6,119
Likes: 156
From: Huntington tx
40psi is about average when cruising down the road, a little less maybe a little more. When I accelerarte hard it bumps up to 55-60psi then drops back down to 35-40ish. At idle with a fresh oil change it's 30psi. It has been as low as 23-25psi at idle with oil that's needing to be changed.
If he only sees 30 psi at high rpms with new oil....run away.
Oh my mileage is in excess of 150,000 miles...hard miles.
If he only sees 30 psi at high rpms with new oil....run away.
Oh my mileage is in excess of 150,000 miles...hard miles.
Last edited by sfc rick; Oct 13, 2014 at 09:08 PM.
Administrator
Joined: Mar 2001
Posts: 368,079
Likes: 24,732
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
There have been many threads here on oil pressure sensors failing and in every case I can remember, the pressure pegs out at a max value. I would not consider that one unless he has a trusted mechanic look at it and verify that all is good or at a minimum tell him what he may be getting himself into.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
