Had that problem on my 88. Part of the insulation had worn through on the wire so it was grounding out on the engine. Follow the wire back and see if you have the same issue.


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OK I will check it. Thank you

 

Checked cable and it is insulated fully with no corrosion/rubbing issues

 

Yo Get,
"Test & Overview in a 96 from 1996 F-150, F-250, F-350, Bronco, F-Super Duty Motorhome Chassis Workshop Manual: The oil pressure gauge is a magnetic movement design consisting of a bobbin/coil assembly, a return to zero magnet and a primary magnet. The shaft and pointer are connected to the primary magnet. The bobbin/coil assembly is pressed into a metal housing which has two holes for dial mounting. The gauge operates through a pressure activated switch. When the engine is started engine oil pressure closes the switch, providing a ground circuit for the gauge coil. Current flow through the gauge coil to ground causes the primary magnet and pointer to rotate, providing an oil pressure reading on the dial face. The oil pressure gauge does not require adjustment, calibration or maintenance. Also, never remove the pointer indicator from its shaft. The oil pressure switch controls the magnetic oil pressure gauge's pointer position. The oil pressure switch closes under normal engine operating conditions (oil pressure above 42 kPa [6 lb/sq in]). The oil pressure switch opens with the engine (6007) off and no oil pressure. Check gauge operation as follows: With the key in RUN and the engine off, disconnect wiring connector at the switch. The gauge should indicate on the LOW graduation or below. Connect the wiring connector to the engine block ground. The gauge should indicate just slightly above mid-scale. If the oil pressure gauge tests within calibration, replace oil pressure switch. If the gauge still tests out of calibration, replace oil pressure gauge." by Ford

 

Thank you. How do I connect the pressure switch wiring connector to the engine block ground? I don’t know how to do that

 

Just pull it off the stud on the sender and touch it to something metal and grounded. Or you can shove a wire into the connector and ground out the other side.


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Just back probe the connector with a needle or straight pin and take a wire from the pin to the block with alligator clips

 

There is barely enough room to get my hand in there to pull the connector off the stud. I can’t see how I could push something into the connector without the ability to move or twist my hand. There is not enough room to grab it and press it against anything either

 

Yo,
Use an old school fuse puller