Question about 1994 Ford F150 Styleside Supercab
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Posted on Jan 02, 2017
Some of the gauges are on the same fuse as the dome light; check the fuses. The other main source of gauge problems for this vintage F150 is the sending units and I don't use the term sending unit lightly, so when you go to the parts store make sure you say you are looking for sending units not sensors (sensors hook to the computer) sending units are of 2 types for this vintage F150, lights and guages you need the ones for gauges, the oil sending unit is about 4 dollars and the coolant temp sending unit for a guage is about the same.
I have 4 fords and you will come to understand that the wiring is a jury rig, all this come out when they are the age of your 1989 PU.
Posted on Oct 16, 2008
the intake air temperature sensor is located inside the air intake duct which is where the air filter is located pull the rubber tubing off the throttle body and look inside with a light and you will see it
Posted on Jan 09, 2009
oil pressure sending unit is close to oil filter.temp sending unit on front of intake.check fuses for temp sending unit and coolant temp gauges if all is good make sure grounding is good.if grounds good your gauges is faulty.
Posted on May 13, 2009
SOURCE: oil pressure problem
You oil pressure sending unit has gone bad, it's common to go bad and some even leak oil.
The oil pressure sensor is on the back of the block on the passenger side, you can get to it from the top and not from the bottom. There are (2) switches back there that screw in to the block and you can only see it from the top of the engine. The Oil Pressure Sending Unit is the one wire harness with a green and white strip on it. The other switch has more wires to it.
When you pick up the new sensor, make sure you get the right one. make sure you get the Oil Pressure Sending Unit which sends variable oil pressure and has only one quick connect for the wire connector. The oil pressure switch is the one that only activates the oil light on older engine.
Once you get the right part at Auto Zone for around $9.00, disconnect the wire clip with the green with white strip on it. and use a deep spark plug socket with a extension and u joint to get the sensor out. The sensor comes with teflon tape already and no oil should leak out from the block. It as simple as replacing a bolt and reconnecting the wire connector.
Good luck and hope this helps, take no more then 10 min to do but about 5 hours for the engine to cool off LOL
Posted on May 29, 2009
Hello mb4494: My name is Roger and I will help you. If by changing the oil pressure sending unit the problem did not change. I would perform a oil pressure test. This is done by removing the oil pressure sensor and inserting a oil pressure gauge. This can be done by yourself or by a repair shop. This needs to be done on a cold engine. Start the engine and observe the oil pressure cold.as the engine warms up observe the pressure. The pressure will drop off as the engine warms up.Should the oil pressure drop below 10 to 12 PSI. then you have internal engine trouble. More then likely a bearing problem. Try dropping the truck into gear and see what the pressure drops off to. Again if the pressure drops below 10 to 12 PSI. you have a problem. I would also check to make sure you have the correct oil switch. a truck with a oil light uses a oil pressure switch. with a gauge you would use a oil pressure sending unit. Sorry for the long reply but want to make sure you check the pressure correctly. Please rate the quality of the answer as this is how we know the answer was correct. Thank You for using Fix Ya. Roger
Posted on Jun 16, 2009
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