oil pressure
Originally Posted by transam600hp
u know to like 60 to 80 ps1
Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 58
Likes: 0
From: st louis mo
it dose the opasite gose down when i get on it and gos up right after i get off og it it will stay at 40 all the way to red line but as the rpms fall the pressure goes up to 60 and 80 psi when i am at a stand still and rev it it will go up with the rpms
Originally Posted by transam600hp
it dose the opasite gose down when i get on it and gos up right after i get off og it it will stay at 40 all the way to red line but as the rpms fall the pressure goes up to 60 and 80 psi when i am at a stand still and rev it it will go up with the rpms
caugh*punctuation*caugh...
Anyway, from what i got out of that, i have never heard of before. If i were you i wouldnt drive it until you can get it figured out. or at least dont get on it. Sounds like it could be a bad oil pressure sending unit, but it would be giving you problems all the time, bouncing around at idle etc.
Hopefully someone else can chime in and give some info.
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
Originally Posted by SStingray
High speed cavitation in the pump due to some restriction, o-ring or sealing issue? I have no idea, but I'm curious too. Never heard of this before.
if there was a problem with the o-ring he would be losing pressure ALL the time, not just on WOT runs.
My buddy had a car when you get on it the oil pressure dropped and then when you backed off it would come back up. Come to find out he was just low on oil and past his oil change date.
Originally Posted by neoakira3
reverse polarity on the oil pressure guage between the needle and the housing of the guage. causing the needle to deflect in reverse
what would case that?
TECH Fanatic
Joined: Mar 2004
Posts: 1,017
Likes: 0
From: Laguna Niguel, CA
My car is the exact same. If I am cruising at 2500RPM with the throttle partly open, as I close the throttle, the oil pressure will come up about 2-4PSI. If I push the throttle back down part way, the oil pressure will drop 2-3 PSI.
My conclusion is that as you go from negative load (engine braking while in gear) to 'regular' load (engine throttle open), there is a slight shift in the rod and main bearings of the crank, causing a slight opening between the crank and the bearings allowing the pressure to drop.
Just my $.02.
My conclusion is that as you go from negative load (engine braking while in gear) to 'regular' load (engine throttle open), there is a slight shift in the rod and main bearings of the crank, causing a slight opening between the crank and the bearings allowing the pressure to drop.
Just my $.02.
Originally Posted by gun5l1ng3r
My car is the exact same. If I am cruising at 2500RPM with the throttle partly open, as I close the throttle, the oil pressure will come up about 2-4PSI. If I push the throttle back down part way, the oil pressure will drop 2-3 PSI.
My conclusion is that as you go from negative load (engine braking while in gear) to 'regular' load (engine throttle open), there is a slight shift in the rod and main bearings of the crank, causing a slight opening between the crank and the bearings allowing the pressure to drop.
Just my $.02.
My conclusion is that as you go from negative load (engine braking while in gear) to 'regular' load (engine throttle open), there is a slight shift in the rod and main bearings of the crank, causing a slight opening between the crank and the bearings allowing the pressure to drop.
Just my $.02.
Still doesnt sound right to me. if that was the problem, i think alot more people would have experienced this and posted about it. and this is the first time ive heard of the problem.
change the oil and the problem will go away, if you drive the car hard, youll notice it after about 1k miles...but id guess long as it stayed over 40-50, it should be fine. Mine does it too, i just always attributed it to oil getting worn out. I run Mobil 1 extended performance 10-40. Ill try Royal purple and see if that holds up better.