Oil pressure guage pegged - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-22-2004, 08:53 PM   #11
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Quote:
Originally Posted by dbtk2
...I don't know of too much else it could be unless it is in the gauge or a ground or something....

Shawn
that'* exactly what we think it is, where should i look for a wire grounded? (i.e. where does the circuit run?
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Old 01-22-2004, 10:35 PM   #12
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Nope, a direct connection to ground will cause the gauge to read 0. One side of the sender is connected to ground, and the other is connected to the gauge. The higher the resistance in the sender, the higher the oil pressure. Try unplugging the sender. The gauge should go all of the way to the high side.
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Old 01-23-2004, 01:59 AM   #13
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Quote:
Originally Posted by fuddyduddy121
Nope, a direct connection to ground will cause the gauge to read 0. One side of the sender is connected to ground, and the other is connected to the gauge. The higher the resistance in the sender, the higher the oil pressure. Try unplugging the sender. The gauge should go all of the way to the high side.
I unplugged the sender, tried it, and sure enough the needle pegged its self without the car running....my dad is betting on my sender being bad...will one off a junked oldsmobile or maybe a junked buick 3.8 work? thats if the car had a gage instead of a light?
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Old 01-23-2004, 06:44 AM   #14
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Quote:
Originally Posted by SSEimatt93
Quote:
Originally Posted by fuddyduddy121
Nope, a direct connection to ground will cause the gauge to read 0. One side of the sender is connected to ground, and the other is connected to the gauge. The higher the resistance in the sender, the higher the oil pressure. Try unplugging the sender. The gauge should go all of the way to the high side.
I unplugged the sender, tried it, and sure enough the needle pegged its self without the car running....my dad is betting on my sender being bad...will one off a junked oldsmobile or maybe a junked buick 3.8 work? thats if the car had a gage instead of a light?
I jus bought one at my local Autozone for $20.99
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Old 01-23-2004, 08:55 AM   #15
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it'd be pretty pointless to buy a used one...you could put it in and have exactly the same problem.
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Old 01-23-2004, 02:02 PM   #16
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Quote:
Originally Posted by DrJay
heh well if its not your sending unit you definately wanna get that checked out. Like it was said, check your oil filter then check your oil pressure spring. I could imagine it could get dirty enough to start sticking.
What is an "oil pressure spring"?
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Old 01-23-2004, 04:48 PM   #17
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the cheapest i found was 60 bucks canadian
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Old 01-23-2004, 05:01 PM   #18
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my dad ordered one for me today for $30 at his cost
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