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Having a few issues with my 2006 Nissan Frontier. First, The oil pressure gauge is acting screwy. While driving long distances it has started to flucate and when at idle it often drops down? Next, have a loud ticking noise coming from up front around the motor? Could that be the oil pump or timing chain?

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  • Cars & Trucks Master
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Had these same indications on a v8 range rover from new. Turned out to be a rotating main bearing shell opening the oil hole to the crank (low pressure) then closing off the hole ( high pressure). I would be having a mechanical oil gauge fitted ( service mechanic ) to eliminate any bearing fault. I would also be replacing the oil pressure sender unit. as a precaution

Posted on Jan 13, 2013

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Posted on Jan 02, 2017

Molson02536
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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

  • 6982 Answers

SOURCE: oil pressure is steady while driving but drops and

Intake gasket has nothing to do with oil pressure unless you have coolant in the oil. Several items in play here...You either have a poor connection at the pressure sending unit, the pressure sender wire is chafed and grounding, the sender itself is failing or the oil pickup screen on the pump is partially blocked with loose carbon debris. I'd replace the sending unit first as they are inexpensive. If the problem continues then do some testing. A mechanical gauge can be put in place of the sender. That will tell you what the actual pressure is. If actual pressure is normal and does not fluctuate as does the dash gauge, then the problem is in the wiring. If the mechanical gauge reads the same as the one on the dash, then the problem is inside the engine and will need some teardown to find the reason. If the pressure does not drop below 15-20 psi, you may want to add a quart of Marvel oil to the crankcase. Sometimes that will help dissolve internal deposits without causing further problems. (takes a few weeks though)

Posted on Apr 16, 2010

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2006 nissan frontier low oil pressure at idle after timing chain replacement


I have just spent $1500.00 to fix this low oil pressure problem. The main cost was having the timing chain replaced and where the oil pressure problem was found. The low oil pressure problem is caused by a bad gasket that is under a plate inside the timing chain cover. The dealer wanted to replace the whole housing as Nissan dose not offer a new gasket and wants you to replace the inner timing chain housing. The plate covers part of the oil gallery, the gasket breaks out from this plate and that is where the oil pressure goes. The gasket can be replaced by removing the plate and making a new gasket. Note getting to the plate inside the timing cover is a major labor issue that takes about 12 hours to complete start to finish. I had to fabricate the gasket my self as the dealer would not. Cost for fixing the bad gasket was about $17.00 for materials. Replacing the timing chain was at my request as it was making noise.

Jan 27, 2012 | Cars & Trucks

2 Answers

My oil pressure gauge goes up and down then stays in the LOW, also I have no power... my truck will only get up to 40MPH... is it possible the oil pump? ?


Not sure about the oil pressure problem. May be the gauge or sending unit. Does the engine start ticking or knocking when pressure goes low?If not you probably still have good pressure.
The loss of power may be a stopped up catalitic convertor. I've had one Frontier that this has happened to.

Jan 21, 2011 | 2006 Nissan Frontier

2 Answers

Fuel gauge on my 2006 Nissan Frontier


You're in luck
There is a possible recall on 2005-2008 nissan frontier/pathfinder and xterra, for erratic/inaccurate or
inoperative fuel gauge. This is the part# for the fuel gauge sending unit in question is #25060-ZS00A
Give your local nissan dealer and they should be able
to help you out. The reference number should be
#NTB07-069 AND 069A Hope this helps.

Jul 05, 2010 | 2006 Nissan Xterra

1 Answer

I'm having the same problem with my 2006 pathfinder


I have a friend who has 2 of these trucks for company vehicles. Nissan put an engine in one at 45,000 miles. The other just blew a head gasket and cracked a piston at 90,000. Keep bugging dealer and keep records of your visits there. Or try another Nissan dealer.

Jan 15, 2010 | 2006 Nissan Frontier

1 Answer

The oil pressure guage on my 2006 nissan frontier is reading very high after recently changing the oil, however, the correct amount of oil was added during the change. Furthermore the oil dipstick...


The guage may rise a little when you accelerate the vehicle...but if it is pegged high, and does not fluctuate, when you turn your ignition key on an off...Your oil pressure switch maybe going bad...Goodluck

Dec 04, 2009 | 2006 Nissan Frontier

1 Answer

How can I fix my 2006 frontier oil gauge. My oil gaugae reflect different oil pressure levels and now it does not reflect different oil pressures.


This is caused by a worn oil pressure sending unit. Have that replaced and you should be set. In rare cases the gauge fails, but this is extremely rare.

Nov 25, 2009 | 2006 Nissan Frontier

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