Why does my oil pressure drop when I accelerate?
Why does my oil pressure drop when I accelerate? Ok guys... so I have a problem.... I will list them.
1.) When I got my h/c installed, I also did a ported oil pump. I was concerned because my oil pressure was reading 130 lbs... so they replaced my oil presure sending unit and it didn't change anything... however I put 4000 miles on the car with no problems..
2.) After I had my long tubes xpipe and catback installed yesterday as well as the ls7 clutch now when I accelerate, my oil pressure rapidly drops to nothing. And as soon as I slow my acceleration down, it instantly fills back up... I never had this probelm pre-install
PLEASE HELP ME
1.) When I got my h/c installed, I also did a ported oil pump. I was concerned because my oil pressure was reading 130 lbs... so they replaced my oil presure sending unit and it didn't change anything... however I put 4000 miles on the car with no problems..
2.) After I had my long tubes xpipe and catback installed yesterday as well as the ls7 clutch now when I accelerate, my oil pressure rapidly drops to nothing. And as soon as I slow my acceleration down, it instantly fills back up... I never had this probelm pre-install
PLEASE HELP ME
I would first look into getting the pegged-gauge issue fixed first, either being the sensor or the gauge. May even want to hook up an aftermarket gauge so you can get an accurate reading AND have a working gauge for the future. Then, when you start getting accurate readings, you can go from there.
ok, so I just checked the oil... and the level is fine.... however after driving for an hour or so.... a few times when I was stopped at the light, the oil presure would fall to nothing (according to the gage) however the car didn't change a bit in the way it sounded. But it would instantly shoot back up to 130
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
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
Ok, not a mechanical problem here most likely. I don't have a C5 manual but looking at the fbody one and being they are gonna be wired about 95% the same here is what I have come to the conclusion of. Gauge is fine. Sending unit is fine. You have pinched the oil sender wire under something and it is getting shorted to voltage. Look really hard where you had the motor apart and see if anything was pinched. Also pull the Instrument cluster out and find the wire that is for the gauge. Oil pressure gauge has a dedicated input. Pull out the Cluster and unhook the oil pressure sender and with a good multimeter see if you have any continuity to ground or have a hot on it. If you have a good multimeter you can do this a piece of cake. I'd be willing to bet a wire got pinched eithor under the deck on the heads, under the intake, or under a valve cover. www.alldatadiy.com had all the information you need to track down the problem.
TECH Resident
Joined: Jul 2005
Posts: 907
Likes: 1
From: NJ
Originally Posted by MagikMan
Now the problem has reversed 
It reads low till i accelerate :-\ haha, no concerns though as it reads 104 when the key is in the on position with the motor off.
It reads low till i accelerate :-\ haha, no concerns though as it reads 104 when the key is in the on position with the motor off.
accelarate, accelerate, accelerating, accelorate, c5, car, change, driops, drop, drops, gauge, low, ls1, oil, pressure, voltage
