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Topic: Oil pressure gage

in Forum: C3 Electrical


Oil pressure gage

Posted: 1/22/04 9:04pm Message 1 of 15
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ATOKA, TN - USA
Joined: 9/25/2002
Posts: 120
Vette(s): 1975 Coupe, 1998 Coupe, 2000 coupe
I think I probally known the answer to this question, but was wondering if anyone has had this same problem. The oil pressure on my 75 stays around 40 psi, unless you give it some gas, then it will max out. I have checked all the wiring, and made sure that no wires are shorted, and that there isn't any hot air leaks around my headers. I believe it's a simple problem with the oil pressure sensor. Does anyone agree with this, or has anyone had similiar problems? Thanks for any input.
|headscratch| |cheers|


1975/L48/Coupe/4 Speed(1 of 1057)/Headers/true duals/aluminum intake/holley 750/MSD ignition/roller rockers/ |IMG|http://www.C3VR.com/member_uploads/1701_1800/1717/BSVette75d_sig.jpg |/IMG|
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Oil pressure gage

Posted: 1/22/04 11:06pm Message 2 of 15
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TWENTYNINE PALMS, CA - USA
Joined: 8/6/2003
Posts: 245
Vette(s): 77 Vette L82, black.
I have the same problem, but on my S-10. And it's not very old. I sounds to me like the sending unit though. Good luck with it.


|IMG|http://www.C3VR.com/member_uploads/3701_3800/3714/duskbgoddesssmall.jpg|/IMG| |B|Semper Fidelis! |/B|

Oil pressure gage

Posted: 1/23/04 4:45am Message 3 of 15
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ORLANDO, FL - USA
Joined: 11/5/2003
Posts: 3
Vette(s): 1974 T-Top, L-48, all original, 63000 miles
I've seen several 'posts' on various Vette forums where the oil pressure gage is erratic or just weird. I'm starting to believe it's a Vette Gremlin that effects most C3 owners. Mine usually just hangs around 40psi most of the time.

|ohwell|


joey G|B| |/B||COLOR=BLUE| |/COLOR|

Oil pressure gage

Posted: 1/23/04 7:10am Message 4 of 15
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!
90 percent of the time an erratic reading or an extream one way or the other is due to the sending unit. GM seem to have a bigger problem with this than the other car lines. I have probably replaced over 100 GM oil senders for this reason, and perhaps 25 of everyone elses. Most of the failures were on the 2.8 and 3.1 liter engines, but I have seen it across the board.

Ken Styer


Oil pressure gage

Posted: 1/23/04 8:33am Message 5 of 15
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SOUTHWICK, MA - USA
Joined: 6/26/2003
Posts: 336
Vette(s): 1975, L-48 coupe, 4-speed, light mods
Hey Bill,

As a fellow 75 owner, let me tell you that I have had the same problem from the start. I have learned to live with it instead of changing the sender like Ken suggested. Too lazy I guess.
Glenn |cheers|


Glenn's Bright Blue 75 T-Top
L48, 4 Speed, Dual Exhaust

Oil pressure gage

Posted: 1/26/04 7:36am Message 6 of 15
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ATOKA, TN - USA
Joined: 9/25/2002
Posts: 120
Vette(s): 1975 Coupe, 1998 Coupe, 2000 coupe
I sort of agree. It just started one day and I have kept a eye on it. It seems to ony "max" out when I am accelerating. If I'm at idle, or decelerating, it will stay around 40psi. I think changing the sender unit will fix it. It's not a big expense, I think around 12 bucks, but I agree, I have bigger fish to fry and just haven't found time to change it. I was just making sure it wasn't something else that I was overlooking. |eek| |saluteflag|


1975/L48/Coupe/4 Speed(1 of 1057)/Headers/true duals/aluminum intake/holley 750/MSD ignition/roller rockers/ |IMG|http://www.C3VR.com/member_uploads/1701_1800/1717/BSVette75d_sig.jpg |/IMG|

Oil pressure gage

Posted: 1/26/04 8:44am Message 7 of 15
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KERNERSVILLE, NC - USA
Joined: 1/13/2004
Posts: 1355
Vette(s): 1968 L-71 convertible
I had a similar problem with a 73. The final outcome was a stopped up passage to the sender. I removed the sender and disconnected the coil and turned the engine over, the stoppage kind of just "blew out" It's a messy ordeal though.


Oil pressure gage

Posted: 2/13/04 10:26pm Message 8 of 15
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ATOKA, TN - USA
Joined: 9/25/2002
Posts: 120
Vette(s): 1975 Coupe, 1998 Coupe, 2000 coupe
Thanks, I think I'll try the blow out. Seems to make sense.

Bill


1975/L48/Coupe/4 Speed(1 of 1057)/Headers/true duals/aluminum intake/holley 750/MSD ignition/roller rockers/ |IMG|http://www.C3VR.com/member_uploads/1701_1800/1717/BSVette75d_sig.jpg |/IMG|

Oil pressure gage

Posted: 2/14/04 1:08pm Message 9 of 15
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BINGHAMTON, NY - USA
Joined: 7/19/2003
Posts: 3808
Vette(s): ......
Yah ,its a good idea to do that every once in a while the oil gets up in there ,next to the sender and gets locked in there,no place to go starts plugging up pull the sender crank the engine over a couple times,install a new one it SHOULD work fine, |thumb|


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Oil pressure gage

Posted: 2/25/04 1:45pm Message 10 of 15
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Joined: 2/12/2004
Posts: 43
On mine ('82 CE) it hangs around 40, but sure is jumpy. Anyone elses do this?


'82 CE

in Forum: C3 Electrical


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