Question about 2001 Ford F150 Styleside SuperCrew

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Where is the oil pressure switch on a 2001 f150 5.4L engine (supercrew) does anyone have a picture or diagram how to find it? When oil pressure gauge drops to zero and light comes on until engine warms up. I am thinking that the oil pressure switch could be the problem and want to replace it, but cannot locate it.

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Left ( driver's side ) front of the engine on the 5.4L engine.

This is shown to be at the end of the baffled area of the intake, the edge of the pleated area farthest from the airfilter ( looking at the engine, the left side of the pleated folds ).
When you locate this, look down the front of the engine.

The connector is a black 1 pin connector with a White w/ Red Stripe wire to it.

You might have to remove the factory air intake plastic housing to see it.

Posted on Nov 13, 2009

  • Arnold Maglaque
    Arnold Maglaque Dec 25, 2013

    What tools do you need to take out the oil pressure switch bolts?

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2001 f150 4.6 low oil pressure 2 or 3 minutes first start


Since you already know what your physical oil pressure is at idle I would try to get an accurate spec from Ford. if 10psi is normal the the problem is likely the switch or cluster.
If it is below spec it could be high mileage (normal bearing wear will lower idle pressure) a weak bypass spring in the pump, or a the wrong oil filter or oil.
If you are not hearing any "lifter clatter" or knocking when u start it, I wouldn't be too concerned about a bad pump or engine damage just yet.
Use only 5/30 or 10/30! anything thicker can cause cam damage due to oil starvation. Also going to long between oil changes can lower idle pressure as the oil looses viscosity and thins out.
According to factory wiring diagrams 2001 F150 does not have a pressure gauge , it has a warning light, however when I read the test procedure it talks about a gauge. either way, light or gauge, it uses a switch (not a sender) to signal the cluster that oil pressure is either above or below a certain value. again, I'm sorry, i don't know what that value is.
The instrument cluster receives ground through an oil pressure switch. When oil pressure is above a certain pressure the switch closes and the instrument cluster then turns out the light or indicates "normal" oil pressure. if the pressure is below a certain value the switch is open (the circuit to the cluster is not grounded) and the light will be on or the gauge will read no pressure.
The light or gauge is NOT directly controlled by the switch. If it has a gauge the gauge will show an increase in pressure when engine RPM increases (calculated by the cluster) it is not showing true pressure.
if your idle pressure is normal, you can test the by grounding the circuit at the switch, key on, if the light is out or the gauge reads normal the problem is the switch (assuming that physical pressure is above spec).
If the idle pressure is slightly below spec you could try an oil stabilizer like Lucas or STP and keep your oil change intervals to 3500 miles.
I hope this helps, feel free to contact me for more information

Robert Grove, ASE Certified World Class Technician, Automotive Hall of Fame 1996
Wego2u Mobile Mechanic
Mobile Mechanics in Orange County, CA

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What was the code number? The oil pressure sensor isn't hard wired to the instrument. The oil pressure sensor is hard wired to pcm, the pcm makes the determination and sends serial data to instrument cluster telling it what to do with oil pressure gage. At the moment, I'm not sure where the oil pressure sending unit is located? It may be on top of engine at the back? In the diagram, the top wire should be ref voltage, key on, bottom wire should be a ground.
If you don't want to do testing yourself. Take it to different repair shop.
oil pressure sensor-nld2xfdm0y35s54mpe0h04ln-2-0.jpg

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2001 F150 pressure gauge reads zero and light comes on when slowing down to 1st gear and stopped, sometimes light and gauge goes off and pressure returns, but fluctuates...also when gas applied and vehicle...


I assume you mean "Oil" pressure...This is the first sign of the main bearings getting to the point of needing replacement. The fact that the pressure goes up when you accelerate tells me that the oil pump is working. There is just too much bearing clearance for the oil pump to keep enough volume flowing at idle to maintain pressure. In short, it's time for an overhaul. It will be less expensive if you do it now than if you wait until you spin a bearing and destroy a crankshaft, or put a rod through the side of the engine block.

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1 Answer

The oil pressure guage on my 2000 Jeep Grand Cherokee is registering 0. My oil was just changed and I don't see any indication of oil leaking anywhere. Could it be the sensor?


First off I wouldnt drive your car until you make sure that you have indeed oil pressure and that the gauge is a false reading, driving your car if in fact it has no oil pressure will severly damage your engine, but firstly i would check the oil pressure switch its located on the passenger side of the engine right back from the oil filter make sure the connector is clean and free from oil and corrosion if the connector appears to be in good shape take a paper clip and insert it between the 2 terminals inside the connector your oil pressure gauge should peak at 80 PSI that tells you that your gauge and all related wiring are good and in working condition, secondly remove the oil pressure switch and hook an manual oil pressure gauge up to you engine and start the engine the guage should have a oil pressure reading anywhere from 30 PSI to 55PSI depending on engine temperature if theres oil pressure on your manual gauge replace the oil pressure switch with a new unit, if you still have 0 PSI on your gauge then stop your engine immediatly and start looking at your oil pump and lubricating system for a problem.

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1 Answer

Ve a 2001 F150 that keeps losing oil pressure


could be but have you actually check the oil pressure

The oil pressure gauge on your dash is really just an warning light and you are not really looking at real oil pressure

Therefore you could have an electrical issue, mainly high resistance in the sender circuit that make the gauge read lower than actual

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2 Answers

My stop light keeps coming up with the problem oil pressure,i have a golf gti turbo


Get the oil pressure tested with an outside gauge. If you run short of oil pressure, turbo and engine will suffer, as you know....

If you are actually short on pressure, you would need to investigate further, usually no good answers there....

But commonly a transducer fails and gives wrong readings, hope for this result

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1 Answer

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The oil light on your car has nothing to do with oil level in the crankcase but rather oil pressure. The oil pressure switch/sensor is located on the rear of the engine block above the right axle I believe. Unless you have engine noise or suspect low oil pressure, I'd replace it but you could check oil pressure for peace of mind with an pressure gauge if you wish. You may need a special socket to replace it.

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