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12-11-2020
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#1 |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,721
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Low oil pressure warning - how?
Most of us know low oil pressure sensor is one of oil leak source on the passenger side, front of LT5.
Matter of fact, last Sunday, I endured a painful torture to replace one. Then I got curious - is there a low oil pressure warning light? I run down to my car, turn the the ignition key to run position which typically turns on all warning lights briefly to verify all light bulbs are functioning and no "low oil pressure warning light". I check 1994 Corvette owner's manual and again no mention of low oil pressure warning light. We have "low oil" warning light but this is for low oil level. Anyone? Have we been replacing unused sensors? I'm going to disconnect the connector and see if anything light up. I'm curious! |
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12-11-2020
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#2 |
Join Date: Sep 2008
Location: Mullica Hill, New Jersey
Posts: 2,592
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Re: Low oil pressure warning - how?
I have never seen a light.
Then again, I likely never had low oil pressure. Perhaps the ECM or CCM monitors it, and maybe reacts to it. It might prevent Secondaries or kill the injector pulse? My Buick 455 circa 1970 cuts off the electric fuel pump if the oil pressure low indicator light activates. I would like to think the LT-5 is at least as "high-tech"?  Marty |
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12-11-2020
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#3 | |
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Join Date: Aug 2006
Location: McLean, VA
Posts: 3,721
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Re: Low oil pressure warning - how?
Quote:
If ECM sees low pressure, then what? Shut the motor off? At 175?
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12-11-2020
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#4 |
 
Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,393
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Re: Low oil pressure warning - how?
I can't find it in the service manual either, buta couple of things come to mind from somewhere deep in my old gray matter. Parts Manual calls it a "Olw Oil Pressure Switch", service manual only refers to it a a low oil pressure sensor. I think is is timed out of the start sequence, and is part of the different signals that illuminate the DIC "SES". For some reason, I had always thought it illuminated an idiot light of its own, "Low Oil Pressure", but that is apparently not the case.
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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12-11-2020
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#5 |
 
Join Date: Sep 2016
Location: Ocala, FL
Posts: 894
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Re: Low oil pressure warning - how?
If oil pressure drops on the gauge does it not activate the ?check gauges? light?
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Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much. |
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12-11-2020
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#6 |
Join Date: Jan 2006
Location: Decatur, AL
Posts: 1,119
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Re: Low oil pressure warning - how?
from 90 Electrical...seems it lights the "check gauges" lamp.
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Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454 |
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12-11-2020
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#7 | |
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Join Date: Aug 2006
Location: McLean, VA
Posts: 3,721
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Re: Low oil pressure warning - how?
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12-11-2020
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#8 | |
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Join Date: Aug 2006
Location: McLean, VA
Posts: 3,721
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Re: Low oil pressure warning - how?
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Linear Mode
