Oil Pressure.........help
Thread Starter
Racer
Joined: May 2000
Posts: 298
Likes: 2
From: chicago il
Oil Pressure.........help
Last night well driving home I stopped for a red light and notice my oil pressure gage reading 80psi. I pulled to the shoulder and checked my oil, it was a little more than a quart low. Fortunately I spotted an Auto Zone a block away, I put a quart in and drove home (approx. 15 miles)but the gage was still reading 80psi and the DIC oil reading 130 degrees. Today I went to the garage and found oil under the car. I started the car and I didn't hear any clacking (rods, pistons or crank)noise but the gage went right to 80psi, I shut the car off.
Anyone have any ideas what might be the problem. I'm just guessing but could the oil pump have gone out or the oil pickup be clogged. My vett is a 99 with 72,000 miles of very conservative driving and is generally driven daily. I've followed the maintance schedule changing oil every 3500 to 4500 miles. Hopefully there isn't any internal damage and I haven't been under the car for further inspection.
Anyone have any ideas what might be the problem. I'm just guessing but could the oil pump have gone out or the oil pickup be clogged. My vett is a 99 with 72,000 miles of very conservative driving and is generally driven daily. I've followed the maintance schedule changing oil every 3500 to 4500 miles. Hopefully there isn't any internal damage and I haven't been under the car for further inspection.
Le Mans Master
Joined: Mar 2002
Posts: 5,300
Likes: 3
From: Mississauga, Ontario Corvettes were built to be driven...not trailered
St Jude Donor '07-'08-'09
Originally Posted by W Muller
You have a bad oil pressure sensor. It happens a lot. Do a search on "oil pressure sensor" and you will find out all you need to know.
Mine went earlier this year and like you my heart sank to my knees but as I found out, this is very commonn on the C5's...not a big issue other than the fact that you (or your dealer) has to pull the intake manifold off to get at the OP switch
Pro
Joined: Nov 2004
Posts: 743
Likes: 1
From: Bartlett IL
mine just started doing that the other day. I've noticed that it reads exactly double the psi I'm normally at. So at least I still know what psi I'm still at. BTW anyone know the part number for the sending unit? Thanks
Racer
Joined: Jan 2005
Posts: 375
Likes: 0
From: Montreal Drive it like you test it !
Hi, the part number is 12573107.
I replaced the sensor a few months ago. In addition to the above instructions, remove some coolant. The level should be lower than the throttle body hoses. Also use the torque sequence on the picture below. No need to remove the fuel lines. You need a deep 1 1/8 socket. That was easier than I thought.
Here is the link to the instruction I used. Be sure to reconnect the small hose circle in red on step 13 b.
Oil sensor CorvetteForum instruction
...
I replaced the sensor a few months ago. In addition to the above instructions, remove some coolant. The level should be lower than the throttle body hoses. Also use the torque sequence on the picture below. No need to remove the fuel lines. You need a deep 1 1/8 socket. That was easier than I thought.
Here is the link to the instruction I used. Be sure to reconnect the small hose circle in red on step 13 b.
Oil sensor CorvetteForum instruction
...
Le Mans Master
Joined: Mar 1999
Posts: 6,029
Likes: 85
From: Palm Coast, FL
I just did mine today... I'd like to make a correction to the above (very well write up) and that the size of the sensor is 1 1/16'' and not 1 1/8''. You’re going to need a DEEP socket!
Also don't forget the water line in the front of the manifold; it will prevent the manifold from being able to be moved the six inches forward…
Also don't forget the water line in the front of the manifold; it will prevent the manifold from being able to be moved the six inches forward…
Thread Starter
Racer
Joined: May 2000
Posts: 298
Likes: 2
From: chicago il
oil pressure sensor or more
thanks for all the replies, but did anyone notice a puddle of oil underneath there car and if so where did it come from. Did the pressure force it to come from the filter or maybe the drian plug or oil pan. I'm scared to death i have a major problem. 
ttt
ttt
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
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Le Mans Master
Joined: Mar 1999
Posts: 6,029
Likes: 85
From: Palm Coast, FL
Originally Posted by NCOMNC5
thanks for all the replies, but did anyone notice a puddle of oil underneath there car and if so where did it come from. Did the pressure force it to come from the filter or maybe the drian plug or oil pan. I'm scared to death i have a major problem.
Let us know what you find out.
Thread Starter
Racer
Joined: May 2000
Posts: 298
Likes: 2
From: chicago il
Bad Oil Pressure Sensor
HIP HIP HOORAY.... 
Got my baby back yesterday and everything is fine (what a relief). As you can see below my baby had issuses. My tech replaced the sensor yesterday (11-16-05) and everything back to normal. What I thought was oil underneath my car was actually antifreeze. My tech was even nice enough to clean the undercarriage of my car. I was charge $60 for the sensor and $210 for the labor whic I was more than happy to pay. I read all the post and printed out the detailed instructions someone posted and just decided to have my tech due it. This was not a GM shop but a high performance shop specializing in trans work. If your in the Chicago area and need any automotive work done I highly recommend PRO/CAR Transmissions in Evergreen Park, 91st and Kedzie.
TTT
Got my baby back yesterday and everything is fine (what a relief). As you can see below my baby had issuses. My tech replaced the sensor yesterday (11-16-05) and everything back to normal. What I thought was oil underneath my car was actually antifreeze. My tech was even nice enough to clean the undercarriage of my car. I was charge $60 for the sensor and $210 for the labor whic I was more than happy to pay. I read all the post and printed out the detailed instructions someone posted and just decided to have my tech due it. This was not a GM shop but a high performance shop specializing in trans work. If your in the Chicago area and need any automotive work done I highly recommend PRO/CAR Transmissions in Evergreen Park, 91st and Kedzie.
Originally Posted by NCOMNC5
Last night well driving home I stopped for a red light and notice my oil pressure gage reading 80psi. I pulled to the shoulder and checked my oil, it was a little more than a quart low. Fortunately I spotted an Auto Zone a block away, I put a quart in and drove home (approx. 15 miles)but the gage was still reading 80psi and the DIC oil reading 130 degrees. Today I went to the garage and found oil under the car. I started the car and I didn't hear any clacking (rods, pistons or crank)noise but the gage went right to 80psi, I shut the car off.
Anyone have any ideas what might be the problem. I'm just guessing but could the oil pump have gone out or the oil pickup be clogged. My vett is a 99 with 72,000 miles of very conservative driving and is generally driven daily. I've followed the maintance schedule changing oil every 3500 to 4500 miles. Hopefully there isn't any internal damage and I haven't been under the car for further inspection.
Anyone have any ideas what might be the problem. I'm just guessing but could the oil pump have gone out or the oil pickup be clogged. My vett is a 99 with 72,000 miles of very conservative driving and is generally driven daily. I've followed the maintance schedule changing oil every 3500 to 4500 miles. Hopefully there isn't any internal damage and I haven't been under the car for further inspection.