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SC Kansas | The low oil pressure light stays on. Is the sender on the truck or engine. Mech Gauge
works fine. Its in a fld 120. Truck is new to me and had ele. tape over the light. |
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Southern Indiana | I don't know about the oil pressure but I do know about the coolant temp. It has 2 sensors. One works the gauge and one works the warning light. Maybe the oil pressure is the same way. |
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Peace River, AB, Canada | Oh no, you removed the tape!!! Now you have to find the solution? I would trust the gauge and disconnect the light bulb or find if the wire to this bulb is shorting somewhere. |
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just a tish NE of central ND | Bad sender unit....... or could be shorted wire, but Id bet on bad or wrong sender unit. |
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SC Kansas | Well i wouldnt messed with tape. All the warning lamps and turn indicators go threw the printed circuit board.
And something was wrong with the turn signals, turns out it was the printed circuit board. So now i need to fix the problem next in line.
Edited by farmerkirk 11/24/2012 13:21
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Mount Vernon, WA | Here is an oil pressure graph for a 3406E
 (1.JPG)
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 1.JPG (87KB - 848 downloads)
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Between Omaha and Des Moines, 7 miles South of I80 | Here is the most likely area, for the truck manufacturer to install an oil pressure "switch" (sending unit) on a CAT 3406B engine. It is the main oil gallery(of that engine), under the turbo/exhaust manifold area.
Red circle are all oil ports, that may have a sender.
Edited by 4WD 11/24/2012 20:59
 (3406B block showing main oil gallery ports.jpg)
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3406B block showing main oil gallery ports.jpg (37KB - 1732 downloads)
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SC Kansas | Thanks. Now where is the low air pressure sender? Lol |
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low oil pressure light cat 3406b
