Question about 2005 GMC Sierra

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Oil sending unit is new but the oil pressure gauge stuck up high

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 31 Answers

SOURCE: Can not find oil pressure sending unit on engine.

yes it will be on the lower part of the engine block. i believ on passenger side.

Posted on Jan 18, 2009

  • 38 Answers

SOURCE: sudden change in oil pressure gauge

It is normal on a Chevy for the oil pressure guage to fluctuate based on the rpm's of the engine. The faster the engine is turning, the higher the pressure. If it is fluctuating without a change of engine speed, then you may have a REAL Big problem such as low or no oil in engine or the oil pump itself is going bad. Could also be a blocked oil filter. You surely change your oil regularly....right?

Posted on Feb 02, 2009

DAD5bbbbg
  • 111 Answers

SOURCE: 2004 GMC Sierra High Oil Pressure

if it is electrical oil pressure sensor I would start there. The best way to see if you have a major problem is to use a mechanical oil pressure tester. Take off the oil pressure sensor and put the mechanical tester on. The tester should come with a Gage. If it comes within your trucks oil pressure range than all is fine and replace the sending unit and see if that don't help your problem.If the tester runs high then the oil pump is bad or your cam-bearings could be the problem. But with cam-bearings you would usually get a low reading.

Posted on Mar 14, 2009

farroutideas
  • 78 Answers

SOURCE: oil pressure sending unit

Hi there;

Your looking foer the oil pressure sensor on the 2004 8.1L.
You will find it located directly behind the EGR valve threaded into the block just to the drivers side of the center bolt for the transmission to block connection.

Thanks
Farrout!

Posted on Mar 17, 2009

  • 5 Answers

SOURCE: oil pressure gauge reads 80 while running

could be one of two things, oil pressure switch (located on top of engine behind intake) or instrument panel cluster, if your vehicle has under 70,000 miles, it's covered under warrenty

Posted on Jun 19, 2009

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2 Answers

High oil pressure. Do I need to replace oil sensor and where is it located?


You could start with the sending unit. Could be a wiring problem or it could actually have high oil pressure.
The sending unit is near the oil filter on the 6 cyl engine and I think on the 8 cyl too.

Mar 07, 2015 | 2002 Jeep Grand Cherokee

2 Answers

Location of oil sending unit on 1990 ranger 2.9


Here's a link to your oil pressure switch,here's the part.As you can see there are 2 types,one for light and one for gauge.
  • When the oil pressure is either high or low it will either turn the oil light "on" in the dash or move the gauge to the extremes
  • Undetected high or low oil pressure can result in internal engine damage and/or gasket leakage

Apr 17, 2013 | Cars & Trucks

2 Answers

How can i fix the oil pump


see this tips and fix it. God bless you
The oil pump supplies oil to lubricate your engine. If the oil pump is worn or is not turning, the engine will suffer a loss of oil pressure, which may result in engine damage or engine failure.
The first sign of trouble may be a low oil pressure warning light, a drop in the normal reading on you oil pressure gauge (if your car has one), or the appearance of ticking or clattering sounds from your engine.
As a rule, most engines only need about 10 PSI of oil pressure for every 1,000 RPM of engine speed. Oil pressure will read higher than normal when a cold engine is first started because the oil is thick. Oil pressure will gradually drop as the engine warms up and the oil thins out. So normal oil pressure on a warm engine cruising down the highway is typically 30 PSI up to 45 PSI.
SYMPTOMS OF OIL PUMP TROUBLE
The first thing you should do if any of these symptoms occur is to stop your car, turn off the engine, let it sit for a few minutes, then check the oil level on the dipstick. If the oil level is at or below the ADD line, add a quart of oil to bring the level back up to the full mark. Add as much oil as is needed to raise the level to the full mark. Then restart the engine. If the warning light remains on, or the oil pressure reading does not climb back up to its normal range, or the engine noise does not go away, you may have a bad oil pump.
The other possibilities include a bad oil pressure sending unit, or a problem with the oil pressure warning light circuit or oil pressure gauge.
OIL PRESSURE SENDING UNIT
If the engine is NOT making any unusual noises and seems to be running normally, and the oil level on the dipstick is FULL, but you are still getting a low oil pressure warning light or low gauge reading, the fault could be a bad oil pressure sending unit.
The oil pressure sending unit is mounted on the engine block. On some applications, there is a spring-loaded pressure-sensitive diaphragm with a switch inside the sending unit. This switch completes the circuit to the low oil pressure warning light if oil pressure drops below a certain threshold. The unit may stop working if the diaphragm inside fails, if the switch is stuck, if the small hole that allows oil to enter the sending unit becomes plugged, if there is a loose, corroded or broken wiring connector at the sending unit, or there is a fault in the wiring circuit between the sending unit and warming light.
On vehicles that have an oil pressure gauge (electronic, not mechanical), the oil pressure sending unit has a small rheostat inside that sends a variable voltage signal to the oil pressure gauge when the diaphragm moves. A worn spot on the rheostat or any of the other problems just described for the simple pressure-type oil pressure switches can cause a problem.
FORD'S FAKE OIL PRESSURE GAUGE
On many Ford vehicles that were built from 1980 through the 1990s, the oil pressure sending unit has two switches, a low pressure and a high pressure. These vehicles also have an oil pressure gauge, but the reading on the gauge is not a true indication of real oil pressure. As long as the pressure to the sending unit is between high and low, the gauge will read normal. If oil pressure drops and trips the low pressure switch, the dash gauge will now read low. Or, if oil pressure goes up and trips the high switch inside the sending unit, the dash gauge will read high. Consequently, don't rely on the oil pressure gauge for an accurate reading in these vehicles. It is only a gross indication if the oil pressure is low, normal or high.
OIL GAUGE PROBLEMS
If the engine is NOT making any unusual noises and seems to be running normally, the oil level on the dipstick is FULL, and you have replaced the oil pressure sending unit but are still getting a low oil pressure reading on the dash gauge, the fault could be in the wiring circuit between the sending unit and gauge, or the gauge itself might be bad.
Check the wiring connections on both ends as well as wiring continuity between the sending unit and gauge. If no wiring faults are found, hook up a pressure gauge directly to the oil pressure port on the engine and check oil pressure with the engine running. If the engine-mounted gauge shows normal oil pressure but the dash gauge is reading low, the problem is a bad dash gauge.
On the other hand, if the engine-mounted pressure gauge reads low and you have done all of the above, chances are the oil pump is worn, or it is not picking up enough oil because of a restriction or blockage in the pickup screen in the bottom of the crankcase.
OIL PUMP PICKUP PROBLEMS
The pickup tube has a screen on the end to prevent large chunks of anything bad that ends up in the crankcase from being sucked into the pump. But we are talking BIG chunks of debris, not normal wear particles or carbon or dust or other microscopic-sized abrasive particles that can cause pump wear over time.

Sep 28, 2012 | 1996 Toyota Tercel

1 Answer

Oil gauge maxed and alternator shoulds 14 plus amps


If you are saying the oil pressure gauge is stuck on high with the sending unit unplugged, you may have a problem with the printed circuit board inside the cluster.

Sep 15, 2012 | 1998 Chevrolet S-10 Pickup

1 Answer

High oil pressure


First thing is find out if the oi pressure is really high. Remove the oil pressure sending unit and hook up a oil pressure test gauge kit, if the pressure is within normal then replace the sending unit first. (requires a special socket)

Jun 18, 2012 | 2006 Nissan Xterra

2 Answers

My 2005 Nissan Armada is reading oil pressure abnormally high. The gauge is maxed out.


  • Well it could be a bad oil pump or a bad Oil Sending Unit. If you have an oil pressure gauge you can pull the sending unit and stick the pressure gauge in there and see what the reading is. I would thing 60PSI would be suitable.
  • I believe this Oil Sending Unit is on the front (possibly the back) of the oil pan.
  • Just remove the connector and put a wrench (or a deep socket) and twist it out and replace with a new one.
  • Make sure the oil filter is snug and not leaking as well.
  • Check your oil level too and make sure it is properly filled.
  • Good luck and thank you for using FixYa.

Regards, Tony

Jun 13, 2011 | 2005 Nissan Armada

2 Answers

I just noticed that my oil pressure gauge reads high. Any ideas? 2002 grand cherokee 4.0


Better high than low, but if too high, may be a possible stuck oil pressure relief valve. Recommend a shop diagnosing this problem.

Oct 10, 2010 | Jeep Grand Cherokee Cars & Trucks

2 Answers

Oil pressure guage has pegged on the high side. Would this be caused by a faulty Oil pressure sending unit? Engine is not overheating and seems to be running fine.


Bad sender is most likely, but could also be stuck oil pressure relief valve. You need to be sure, or the pump could break and destroy the engine.
Try a cheap mechanical gauge instead, screwed into the sender hole. If pressure good there, then check the sender with ohmmeter. If 0 or infinite ohms, replace sender. If not, see if gauge drops to 0 when sender disconnected. If not, then gauge bad.

Aug 10, 2010 | 2003 Chevrolet Silverado 1500

2 Answers

Oil pressure loss


the 1st thing u do is have the oil pressure tested with a test mechanical gauge by a shop, most times it is just the oil pressure sending unit is defective, but never assume that is the problem, low oil pressure will distroy a $5000.00 engine very quickly, u can just try a new sending unit, but highly recommend a pressure test with a mechanical gauge before you run the engine anymore.

Dec 05, 2009 | 2000 Jeep Cherokee

3 Answers

I have a 2005 trailblazer. I got my oil changed


Could be either a gauge gone bad, or the sending unit. Unplug the oil sending unit with key on to see what the gauge does.

Nov 08, 2009 | 2005 Chevrolet TrailBlazer

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