Oil pressure gauge pegged

Lunar-tic · Feb 17, 2017

Gents, I had a little wiring snafu and in the process of fixing it I might have accidentally crossed the ignition, oil, and temp wires coming out of the firewall going to the coil and sending units. Now the oil gauge is pegged, but everything else works fine. Did I nuke the oil pressure sending unit?

Thanks for the help

B RON CO · Feb 17, 2017

Hi, if the gauge does a complete sweep when the key is turned on I would think the wire to the sender is grounded, or the sender is bad. If the gauge is pegged with the key off I never heard of that. Good luck

Lunar-tic · Feb 17, 2017

Sorry, pegged when I turn the key on.

SteveL · Feb 17, 2017

If it's a new sender they could've gave you the wrong one. They gave me a newer sender and it pegged the gauge.

Lunar-tic · Feb 17, 2017

It was working correctly before I mixed up the wires. I have continuity between the sending unit and the gauge. It is one of those summit racing tachometers with temp, oil, and volts built in. Only the oil is pegged.

garberz · Feb 17, 2017

If the gauge returns to zero with the key off, then your gauge is fine. If you unplug the white/red wire at the sender, and the gauge stays at zero,(key on) I'd say your sender is bad. If unplugged, and the gauge still pegs (key on), then you have a short to ground in that wire.

Mark

Lunar-tic · Feb 17, 2017

Thanks Garberz. Every time I "fix" something, I end up breaking something else.

Skiddy · Feb 17, 2017

william.jones2 said:
Thanks Garberz. Every time I "fix" something, I end up breaking something else.

I have been doing that a lot lately too

garberz · Feb 17, 2017

Skiddy said:
I have been doing that a lot lately too

One step forward, two steps back. You guys are not alone.%)

Mark

Lunar-tic · Feb 18, 2017

I put new conduit on all my wiring before the holidays and haven't started it since, so it was pretty frustrating trouble shooting the problem. And the funniest part was, it wasn't supposed to be a "Bronco" day. I was just moving it to get to a motor to take to the machine shop!

Lunar-tic · Feb 25, 2017

I think the gauge is toast. Ran the test Garberz suggested and it is still pegged. I'll get a new gauge to run it against.

Oil pressure gauge pegged

Lunar-tic

Sr. Member

B RON CO

Bronco Guru

Lunar-tic

Sr. Member

SteveL

Huge chevy guy

Lunar-tic

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garberz

Bronco Influencer

Lunar-tic

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Skiddy

Bronco Guru

garberz

Bronco Influencer

Lunar-tic

Sr. Member

Lunar-tic

Sr. Member

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