Could someone give me an idea as to why my oil pressure gauge appears to be pegged out all of the time. And how to possibly test it.
Thanks in advance
- posted
19 years ago
'88 K1500 Oil pressure Gauge not working
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- posted
19 years ago
Try unplugging it at the sending unit. H
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- posted
19 years ago
"Pegged" is what they do when the circuit to the sender is open.
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- posted
19 years ago
Ok....didn't know that. H
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- posted
19 years ago
the wire is GROUNDED !
climb under and follow the wire!
it may have just fallen off!
if not , replace the sending unit!, less than $20.00
karl
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- posted
19 years ago
they peg if grounded!
they are dead if no current!
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- posted
19 years ago
The above two conditions contradict each other...
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- posted
19 years ago
How?
If it has fallen off and contacted ground, which is a scenario he describes.
Refinish King
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- posted
19 years ago
Meaning that the needle goes to maximum...
From Mitchell On Demand;
"Sending unit specs:" Engine off (no pressure) 1 ohm Engine running (pressure) 44 ohms
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- posted
19 years ago
That's the way it works.
If the sender circuit were grounded, the needle would be at zero, not "pegged."
Nope, low resistance = low gauge reading, high resistance = high gauge reading. An open circuit on the sender side of the gauge circuit results in the gauge being pegged.
Look up the specs for the sender... O PSI = 1 ohm Running PSI = 44 ohms.