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#1 |
Registered User
Join Date: Jun 2004
Posts: 64
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Oil Pressure - "Driving" me crazy
Need some feedback on some findings. When accelerating, my OP drops to 15-30 PSI. Under hard acceleration it will stay there a while until I reach cruise. No problems while cruising, 60 PSI like all normal. If I'm going 60 and I pump WOT, Oil pressure drops from 60 down to 30 PSI. I've even seen it get as low as ZERO from a stop but return to 60 once in cruising state. When I take turns or come to a stop, pressure will drop to 15 PSI. Anyone?
Yeah, it's got oil in it. Mobile 1. ![]() |
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#2 |
Registered User
Join Date: Jan 2004
Location: Oklahoma
Posts: 1,057
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Maybe the oil pickup fell off of the pump...
__________________
Youth soon passes away, but immaturity can last a life time. |
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#3 |
What do we get for $10?
Join Date: Oct 2004
Location: Beardstown, Illinois
Posts: 341
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Or maybe the pickup screen is plugged?
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1977 GMC K25 400/400/205 1989 Chevy Suburban R1500 350/700R4 (work beater) 1994 Chevy K3500 dually 454/4L80 1996 Corvette LT4 350/ZF 6 speed 2000 Bonneville SSEI Supercharged 3.8 Liter V6 1966 Chevelle 2 door sedan (Needs major repair ![]() |
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#4 |
Registered User
Join Date: May 2004
Location: Lubbock, Texas
Posts: 2,121
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posibly its to low, thats what it sounds like to me anyways, but pick up screen could be it too
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'96 Nissan Pathfinder '02 Firebird Trans Am. '88 K5 Blazer |
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#5 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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have you changed out the sending unit? I would try that first, as it would be easiest and cheapest.
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1974 Jimmy- 5.3/4L80e/NP241 |
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#6 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Check the oil level, make sure its level. Buy a mechanical oil pressure gauge just to verify the findings. Could be the bearings are about ready to go but it could be other things. It could be a bad gauge, sending unit, wire connection or mechanical malfunction. Also it might be a good idea to pull the valve covers and check the oil returns. Then you will get to see more of what is going on after the valve cover comes off.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
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#7 | |
Registered User
Join Date: Jun 2004
Posts: 64
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Quote:
Being as the motor has less than 5k, I'd hope its not something such as the bearings. But we will see. |
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