that's what may be causing your zero pressure read. 
Help!!! Oil pressure problems!
Thread Starter
Registered User
Joined: Mar 2011
Posts: 25
Likes: 0
Help!!! Oil pressure problems! 95 ta with a 355 lt1 about 3400 miles on the motor and this morning the oil pressure is a zero no matter what I do (pick up the revs, add oil, restart the car) it makes no noise when running an runs absolutely fine. What could it be?
Thread Starter
Registered User
Joined: Mar 2011
Posts: 25
Likes: 0
I checked the level and it looked a little bit low but not enough to make a difference where my gauge literally reads below 0. I just added a bit of oil. Should I take off the valve cover to see if the rockers are getting oil? Cause then it would just be a bad sending unit problem right?
TECH Veteran
Joined: Dec 2008
Posts: 4,145
Likes: 61
From: Little Rock, AR
If the o/p sensor was unplugged, the gauge would be pegged. If the wire to the gauge was grounded out, it would read zero.
Verify pressure with a mechanical gauge. If no pressure, it might be the o/p drive (under the intake). What pump did you put in 3400 miles ago?
Verify pressure with a mechanical gauge. If no pressure, it might be the o/p drive (under the intake). What pump did you put in 3400 miles ago?
^ spot on. I am thinking the oil pump drive has let go. Also if the oil pump pickup had fallen off, assuming the oil is full or close to full, the pump would still draw oil in through the hole and build pressure.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
if it infact doesn't have any oil pressure dont run the thing you will wind up with big issues..........hopefully you havent already.....3 seconds of no oil pressure is enough to wreck stuff...........get a mechanical gauge put it on and just crank the car with the coil unplugged.....see if it builds pressure........if not you got a mechanical issue.......
A friend of mine ran his engine when the oil pump drive broke for over 30 seconds at idle and it isn't making any noise. I'm sure the bearings were scored a little tho.
On my old engine i lost oil pressure countless times due to the pickup being off, and i drove the car over 20,000 miles without a pickup on it. Just couldnt dump the clutch or really slam the brakes hard.
Sounds like your oil pump drive.
On my old engine i lost oil pressure countless times due to the pickup being off, and i drove the car over 20,000 miles without a pickup on it. Just couldnt dump the clutch or really slam the brakes hard.
Sounds like your oil pump drive.
I will state that I think the Advance actually works fine for me.
