oil pressure gauge help

[89Burben]

got the wire hooked up, new sender, and the gauge is reading max, does not even change if i unplug the wire......any ideas?

 

[Confedneck79K30]

youve either got a bad sender or the gauge is grounded directly, is it? take the wire off the sender and ground it to the battery neg or a clean spot on the frame, then it should read max, unplugged from the sender it should read low, unplug the wire from the gauge, is there more than one post on the gauge to hook it to?

 

[89Burben]

ok that helps a little, i forgot to mention that the gauges are the stock cluster, not an individual gauge........if that changes anything........thanks

 

[Confedneck79K30]

then try pulling the wire for the sender, directly out of the harness connector into the cluster and see the change..

 

[chevy wrangler]

mine does the same thing , i'll go and check it when i get my truck back later today.

 

[ryoken]

If your gauge is pinned with the send wire disconnected, the gauge is fubared... Should drop to empty, then grounding the send wire should put it to full....

 

[89Burben]

well i went out and

wire grounded to the frame------gauge goes to zero
wire hangin in mid air----------gauge goes to max
wire connected to sender-------gauge still goes to max

i bought the sender from advanced auto pn OPS88 gp sorensen says with gauge, one terminal, 60 PSI


i have two instrument clusters and both clusters do the same thing.

are both oil pressure gauges shot?

 

[ryoken]

apparently.... with ignition on, send wire not attached to anything, it should read empty. ground it and it should go to full... that'll tell ya right there without having the sender even hooked up..

 

[pauly383]

And furthermore , the gauge itself may not of actually died . The ceramic resistor behind it could have . I personally played with several different oil gauges , and on a hunch tried the good ones resistor on the old one and it came back to life .

 

[ryoken]

Yeah, honestly, I'm not overly familiar with the stock gauge...

Didn't even know it had a resistor, learn something new everyday!

 

[89Burben]

the sender ended up being bad.........i checked it with an ohm meter and it was like at 2400 ohms when sitting there, new sender is at 1 ohm sitting there. and the gauge works!

oh well guess you gota check the new stuff too, specially from AA