What is this?
Racer
Joined: Nov 2012
Posts: 340
Likes: 2
From: Port Washington WI
That is an oil pressure switch, to feed an oil pressure idiot light or an electric oil pressure gauge. It looks like somebody put together a tee fitting out of hardware parts because on the other side of the tee is the typical oil line that feeds a mechanical oil pressure gauge. You'd have to figure out whether your dash gauge is mechanical or electrical to diagnose the problem. If mechanical, the the needle is probably stuck. If electrical, unplug the connector on the sending unit, clean it and make sure the terminal is making a good connection to the wire.
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
That is an oil pressure switch, to feed an oil pressure idiot light or an electric oil pressure gauge. It looks like somebody put together a tee fitting out of hardware parts because on the other side of the tee is the typical oil line that feeds a mechanical oil pressure gauge. You'd have to figure out whether your dash gauge is mechanical or electrical to diagnose the problem. If mechanical, the the needle is probably stuck. If electrical, unplug the connector on the sending unit, clean it and make sure the terminal is making a good connection to the wire.
Burning Brakes
Joined: Dec 2008
Posts: 971
Likes: 45
From: Middlesex NJ
Do you have an electric fuel pump or an oil idiot light setup?
That would be used to shut off the fuel pump if the oil pressure isn't there, in this case its used as a safety mechanism to turn of the pump in case of an accident or stall of the engine.
The part going the other direction away from the electrical switch seems to have the nut and Ferrel setup for the nylon tube that goes to a mechanical pressure gauge.
That would be used to shut off the fuel pump if the oil pressure isn't there, in this case its used as a safety mechanism to turn of the pump in case of an accident or stall of the engine.
The part going the other direction away from the electrical switch seems to have the nut and Ferrel setup for the nylon tube that goes to a mechanical pressure gauge.
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
Do you have an electric fuel pump or an oil idiot light setup?
That would be used to shut off the fuel pump if the oil pressure isn't there, in this case its used as a safety mechanism to turn of the pump in case of an accident or stall of the engine.
The part going the other direction away from the electrical switch seems to have the nut and Ferrel setup for the nylon tube that goes to a mechanical pressure gauge.
That would be used to shut off the fuel pump if the oil pressure isn't there, in this case its used as a safety mechanism to turn of the pump in case of an accident or stall of the engine.
The part going the other direction away from the electrical switch seems to have the nut and Ferrel setup for the nylon tube that goes to a mechanical pressure gauge.
Everything else looks stock to me...Im not expert though
Thanks for all your help.
Burning Brakes
Joined: Dec 2008
Posts: 971
Likes: 45
From: Middlesex NJ
That rubber hose cut off on the other end would really be a nylon tube and it may have melted closed.
If your not using that rubber hose/nylon tube to feed your gauge then by all means remove the broken hose/nylon tube and plug that pipe because if that hose lets go you will loose all of your oil and seize the engine.
That nylon hose is supposed to into the car to a mechanical gauge. Looks like someone put in the wrong electrical sending unit and may have tied it to a late model electric oil pressure gauge. I saw a post about someones gauge stuck at 30 and maybe that was you with this funky setup. You would need the correct sending unit matched to the correct late model gauge and you can use an electric gauge in your car if wanted.
Those tubes work well for years if unmolested. But recently a guy had his clock changed on his 71, kinked the tube in the console and the tube broke, he lost all the oil into his rug in the car and seized the engine. Very expensive clock repair........
If your not using that rubber hose/nylon tube to feed your gauge then by all means remove the broken hose/nylon tube and plug that pipe because if that hose lets go you will loose all of your oil and seize the engine.
That nylon hose is supposed to into the car to a mechanical gauge. Looks like someone put in the wrong electrical sending unit and may have tied it to a late model electric oil pressure gauge. I saw a post about someones gauge stuck at 30 and maybe that was you with this funky setup. You would need the correct sending unit matched to the correct late model gauge and you can use an electric gauge in your car if wanted.
Those tubes work well for years if unmolested. But recently a guy had his clock changed on his 71, kinked the tube in the console and the tube broke, he lost all the oil into his rug in the car and seized the engine. Very expensive clock repair........
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Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
That rubber hose cut off on the other end would really be a nylon tube and it may have melted closed.
If your not using that rubber hose/nylon tube to feed your gauge then by all means remove the broken hose/nylon tube and plug that pipe because if that hose lets go you will loose all of your oil and seize the engine.
That nylon hose is supposed to into the car to a mechanical gauge. Looks like someone put in the wrong electrical sending unit and may have tied it to a late model electric oil pressure gauge. I saw a post about someones gauge stuck at 30 and maybe that was you with this funky setup. You would need the correct sending unit matched to the correct late model gauge and you can use an electric gauge in your car if wanted.
Those tubes work well for years if unmolested. But recently a guy had his clock changed on his 71, kinked the tube in the console and the tube broke, he lost all the oil into his rug in the car and seized the engine. Very expensive clock repair........
If your not using that rubber hose/nylon tube to feed your gauge then by all means remove the broken hose/nylon tube and plug that pipe because if that hose lets go you will loose all of your oil and seize the engine.
That nylon hose is supposed to into the car to a mechanical gauge. Looks like someone put in the wrong electrical sending unit and may have tied it to a late model electric oil pressure gauge. I saw a post about someones gauge stuck at 30 and maybe that was you with this funky setup. You would need the correct sending unit matched to the correct late model gauge and you can use an electric gauge in your car if wanted.
Those tubes work well for years if unmolested. But recently a guy had his clock changed on his 71, kinked the tube in the console and the tube broke, he lost all the oil into his rug in the car and seized the engine. Very expensive clock repair........
perhaps I wasn't very good at explaining n describing..:
On the right of the copper adapter I have a copper line that goes through the firewall and connects directly to the mechanical oem oil pressure gauge.
On the other side the black wire with the blue connector to the switch is attached to some other switch and a cut off hose...here's a picture:
I hope this helps explain myself..sorry for the confusion...what the eck is this?
Last edited by Cattiva73; Sep 26, 2013 at 03:48 PM.
Burning Brakes
Joined: Dec 2008
Posts: 971
Likes: 45
From: Middlesex NJ
I dont know what year you have but if that is connect to a switch on the oil pressure port it was meant to control something that used vacuum based on the presence or lack there of oil pressure.
I cant seem to orient myself to the latest picture where is that?
I looked at the 73 stuff i can find and I don't see that anywhere on the vacuum diagrams and the oil pressure sending stuff just doesn't look stock to me. It looks like its mounted by your #1 body mount, I just cant imagine what would need to sense oil pressure and then operate a vacuum source. I could see temperature but not oil... Just escapes me.
I cant seem to orient myself to the latest picture where is that?
I looked at the 73 stuff i can find and I don't see that anywhere on the vacuum diagrams and the oil pressure sending stuff just doesn't look stock to me. It looks like its mounted by your #1 body mount, I just cant imagine what would need to sense oil pressure and then operate a vacuum source. I could see temperature but not oil... Just escapes me.
Last edited by mysixtynine; Sep 26, 2013 at 04:41 PM.
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
Instructor
Joined: Aug 2012
Posts: 109
Likes: 8
From: St.Augustine FL
that oil pressure sending unit(electric) is not stock.it was an after thought by a PO. the small vacuum pod mounted at your #1 body mount is not original either.i would remove it and while your at it consider re plumbing the mechanical oil line to your gauge(as copper line will break).you can go with the original plastic line and fittings or you can go with an auto meter flexible ss line with the fittings on the line which will mount to your factory gauge.you may have a clogged copper feed line to your gauge or some old dried up oil in the gauge,you would need to remove the gauge and check.hope this helps you.
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
that oil pressure sending unit(electric) is not stock.it was an after thought by a PO. the small vacuum pod mounted at your #1 body mount is not original either.i would remove it and while your at it consider re plumbing the mechanical oil line to your gauge(as copper line will break).you can go with the original plastic line and fittings or you can go with an auto meter flexible ss line with the fittings on the line which will mount to your factory gauge.you may have a clogged copper feed line to your gauge or some old dried up oil in the gauge,you would need to remove the gauge and check.hope this helps you.