Weird oil pressure reading
Thread Starter
Supreme Member
Joined: Jul 2005
Posts: 2,123
Likes: 0
From: North Central Mass.
Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Weird oil pressure reading
Hey, just noticed today that my oil pressure goes down when I apply throttle at a certain rpm.
Say my car is cruising at 2k rpm with about 60 psi and no throttle at all.
If i give it gas, (same rpms) the oil pressure will go down about 5 pounds. Let off, and it goes back up.
What gives?
Say my car is cruising at 2k rpm with about 60 psi and no throttle at all.
If i give it gas, (same rpms) the oil pressure will go down about 5 pounds. Let off, and it goes back up.
What gives?
Junior Member
Joined: Nov 2004
Posts: 71
Likes: 0
From: Glenville, NY
Car: 1987 Firebird
Engine: LB8, 2.8L V6
Transmission: t-5
Cant help you much, but I have just about the opposite problem. Most of the time my needle is pegged above 80, and might drop once in a while to around 60 or so after cruising for a long time. I think the problem is a bad sensor, but I really dont know.
Senior Member
Joined: May 2006
Posts: 514
Likes: 0
From: NorCal
Car: 91 Camaro RS(RealSlow)
Engine: 3.1L
Transmission: 700R4
Axle/Gears: unknown/mostlikelycrappy
for wizman's case
if ur using multi weight oil(which most likely you are)
then as you drive long time and oil gets hot,
the oil gets thinner and thus u get lower oil psi.
if ur using multi weight oil(which most likely you are)
then as you drive long time and oil gets hot,
the oil gets thinner and thus u get lower oil psi.
Supreme Member
iTrader: (3)
Joined: Feb 2003
Posts: 2,470
Likes: 6
From: Waterford, MI
Car: 1998 Camaro Z28
Engine: 6.0L
Transmission: 4L60E
Axle/Gears: 3.73
if youre gauge is usually pegged and occasionally moves its more than likely a sending unit. i had the same thing w/ mine and most on here probably have at some point.
Member
Joined: Jul 2006
Posts: 127
Likes: 2
Car: 84 Firebird: F41, Pwr, Instr Pkg
Engine: LC1 (V6 2.8L, 280k mi)
Transmission: MD8 (700R4)
Axle/Gears: GU5 (3.23)
Originally Posted by Toehead
Hey, just noticed today that my oil pressure goes down when I apply throttle at a certain rpm.
Say my car is cruising at 2k rpm with about 60 psi and no throttle at all.
If i give it gas, (same rpms) the oil pressure will go down about 5 pounds. Let off, and it goes back up.
What gives?
Say my car is cruising at 2k rpm with about 60 psi and no throttle at all.
If i give it gas, (same rpms) the oil pressure will go down about 5 pounds. Let off, and it goes back up.
What gives?
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