Question about Nissan Titan

1 Answer

My wife and Step son, did me a favor, and changed the plugs in my truck. Now my oil pressure gauge is reading above half at idle and pegs out at 1500rpm. Did the pressure switch go out or could it be a wire shorting somewhere?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Nissan Master
  • 3,854 Answers

The sensor has gone bad, it's common since the housing is made of metal and the center is made of plastic. IF you go to Auto Zone they will have the new oil sending unit and  can give you the step by step instruction to replacing it. You can check the wire harness on the oil sending unit to make sure it's has not come loose and not getting full contact first. Good luck and hope this helps. Take your cover off like you are changing your oil. If your feet are sticking out the front of the truck, it will be to the left of the oil filter location, but immediately. There will be a wire harness and a plug. You can't miss it if you use these crude directions.

Posted on Jun 27, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

3 Answers

Oil pressure drops when im at lights,but goes back up when i go,no knocking noises,n regular oil changes,what should i do


First hook up a mechanical pressure gauge to get a true reading--you may just have a bad sender. If pressure is less than 10 to 15 psi at hot dead idle, tell us how many miles on engine--what oil you are using--how often you change it. I have sometimes gone up one notch on thickness of oil on worn engines and run them many more miles.

Mar 10, 2016 | Dodge Ram 1500 Cars & Trucks

2 Answers

I have a 2003 ford ranger the oil pressure guage goes to hald way then 0 back to half way truck runs great with no problems


Check the plug first. Look at the tabs in the plugs. They should be touching from one side to the other. See a gap fix or replace the plug. If it looks good, Replace the oil sending unit.

Dec 18, 2015 | Ford Cars & Trucks

1 Answer

Has 358000 miles, just had leaks repaired. Twice since my oil pressure gauge reads no pressure but not all the time? Why


1. Oil Pressure Gauge Not Working You will notice this happens when your oil pressure gauge is not reading, whether the engine is turned off, idle or running. Try to step on the gas to rev up the engine. If the oil pressure gauge still doesn't change its reading, your gauge is busted. It's best to replace it as soon as possible because you won't have any idea if your car is already overheating or not.
2. Oil Pressure Gauge Reading Too Low When your engine is idle, the oil pressure gauge will have a low reading. When the engine starts running or when you're already cruising or on the freeway, your gauge's reading should have increased. If it stays on a low reading, then you now your oil pressure gauge is broken.
3. Oil Pressure Gauge Reading Too High Another common oil pressure gauge problem is when your oil pressure gauge is reading too high when your engine is idle or when it's turned off. Rep

Oct 24, 2015 | 2001 GMC Yukon XL

1 Answer

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

Jul 05, 2013 | Cars & Trucks

2 Answers

My oil pressure gauge is fluctuating and on ocassion will peg out to the high side. What could be the cause? Oil always checks good on dipstick.


Sounds like it could be the oil pressure sending unit. I believe it's at the back of the intake manifold, on the driver side.

May 15, 2010 | 2001 GMC Sonoma Extended Cab

4 Answers

Oil pressure reading in 2003 gmc envoy


No problem with the oil pressure, the norm is between 40 to 60. Anything lower then 40 you have low oil pressure and anything above 60 then you have high oil pressure which is caused by a blockage in the system.
What is common is the oil pressure gage fluctuating for the first 200 miles if the oil pressure sending unit is getting worn. Good maintenance will keep the engine clean and running good but the oil pressure sending unit is inexpensive and easy to replace. Next time you do an oil change you can have them change the sending unit.
Good luck and hope this helps. You can pick up the sending unit at Auto Zone and most auto parts store and will have the step by step to replacing it. If you do attempt to replace it. make sure you DO NOT USE any Teflon tape or silicon on the threads, they are tapered and need a good ground to the engine for proper readings.

May 28, 2009 | 2004 GMC Envoy

1 Answer

Oil pressure gauge reads 80 psi with engine off and pegs running


That is probably a defective oil pressure gauge or a broken oil pressure sender, it reads 80 psi just because that is the maximum value allowed.

Pressure can be verified by reading it with a gauge tool.
If you really have pressure over 70 psi when engine is running then start replacing the oil filter, and check that the oil lines from pump are not obstructed, if there is nothing in there then replace oil pump.

If instead the gauge reads 80 with engine off, that is a defective pressure gauge.

Feb 25, 2009 | 2003 GMC Sierra 1500

1 Answer

92 cherokee very high oil pressure


sounds to me like you have a bad oil pressure sinding unit

Feb 02, 2009 | 1996 Jeep Cherokee Country

2 Answers

Oil pressure gauge reads 80(pegged),,oil tepm is 207....car runs great


it is probably the oil sending unit if you have access to a direct reading oil pressure gauge put it on and if oil pressure is reading normal replace sender

Nov 05, 2008 | 2000 Chevrolet Corvette

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

239 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

726 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...