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Oil Pressure gauge troubleshoot 2000 tundra

Oil Pressure Gauge reads zero pressure. Toyota Dealership says it's the gauge....not the sending unit. I just wanted to check it out myself since they said it was over 300.00 for the gauge and 180.00 Labor. So how would I troubleshoot the Oil Pressure Gauge?

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6ya6ya
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Posted on Jan 02, 2017

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ginko
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SOURCE: fluctuation on the oil pressure gauge reading

The oil pressure sending unit is a sensor with an internal diaphragm, if the internal diaphragm is damaged , or the line to the diaphragm is blocked you can get this kind of fluctuation on the oil pressure gauge.

The oil pressure value must be read by installing a mechanical gauge near to the oil pressure switch and checking the pressure.

If pressure is ok, replace the sending unit. If there is a real pressure drop, check the oil pump.

If you still get fluctualtion after replacing the oil pressure sending unit, replace the oil pressure gauge.

Posted on Nov 24, 2008

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dgjtex
  • 405 Answers

SOURCE: The oil gauge in my

have you changed the oil sending unit, this is the most probable cause.

Posted on Jan 07, 2009

  • 1201 Answers

SOURCE: Installing mechanical oil pressure gauge in 1988 Toyota Tercel

It is under hood, drivers side, front engine area,below cylinder head, mounted in engine block.

Posted on Jan 30, 2009

  • 114 Answers

SOURCE: I have recently purchased a 1997 Toyota

Unless you are in a cold part of the country, I'd suggest 10W40 or even 20W50 and see if the oil pressure improves. Mobil 1 will often yield lower oil pressure in higher mileage engines when hot. It's really not worth the money unless you live in near arctic conditions.

Posted on Dec 20, 2009

  • 205 Answers

SOURCE: 2000 Tundra 4.7L oil pressure fluctuation

Any smoke from the back end? Did you check the oil level? Have you added oil recently? Its possible it might have been over filled. (which can be worse than underfilled) Also, open the radiator cap and check for white gunge. If its there you have a blown oil seal somewhere which is leaking into the coolant. Obviously, also check to see if you enough oil in there first.

Posted on Jan 06, 2010

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1 Answer

How do I check no oil pressure on gauge? The oil pan is full.


First you need to find the sending unit. Some are by the oil filter. Most sending units sink current so by taking the lead off and grounding it you should get a reading on the gauge. This will narrow it down to whether it is the sending unit on the engine or the gauge on the dash. Depending on the car there are a bunch more questions to be asked but this is a general answer.

Dec 24, 2014 | 1999 Jeep Grand Cherokee

2 Answers

Oil pressure gauge is reading zero


Could be the gauge on the dash. If you really had no oil pressure the engine would be very loud.
A mechanic would check oil pressure with a mechanical gauge to verify.

Jun 17, 2013 | 2006 Chevrolet Tahoe

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 pressure gauge reads zero, engine appears to be running fine with no noises what so ever, no oil leaks, oil level is normal.


The oil pressure should be verified by removing the oil pressure sending unit and installing a gauge to take a direct reading. If the oil pressure is ok, the problem is most likely a bad pressure sensor (although it could also be a bad gauge or circuits).

If the gauge verifies that the oil pressure is indeed low, then the oil pan needs to come of for an inspection of the oil pick-up tube and the engine bearings.

Nov 20, 2011 | 1999 Jeep Cherokee

1 Answer

Low oil presure


perform a master oil pressure test. this is done by removing the oil pressure sending unit and installing a oil pressure gauge. if the reading on the test gauge is ok, the sending unit needs to be replaced. if the pressure reads low on the test gauge, there may be excessive bearing wear or you may have worn valve guides. good luck!

Apr 29, 2010 | 1997 Ford F150 Regular Cab

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

1 Answer

Oil pressure gauge drops to zero when stopped/idle. resumes pressure @1500rpm or better. sending unit or pump


This has an electric pressure gauge with a sending unit. Try this: When at idle, SLOWLY increase the engine speed. If the needle on the pressure gauge all of a sudden leaps to a pressure (like 'real quick') and acts normally with even faster engine speeds, the sending unit is bad. (It is just not reading the lower pressures.) Zero engine pressure will manifest itself in a bunch of knocky sounds and lifters that aren't pumping up and therefore "ticking" loudly. You probably don't have that since you didn't mention these problems.
Replace the sending unit after the above test and you should be fine.

Nov 23, 2009 | 2000 Jeep Grand Cherokee

2 Answers

Oil gauge won't stay up


It sounds like most likely its your Oil pump, if you have no pressure at stop and when you hit gas it sets the C/E light off, Guages in dash wont set off Check Engine Light. Replace Oil Pump.

Sep 03, 2009 | 2000 Jeep Cherokee

2 Answers

Fluctuation on the oil pressure gauge reading


The oil pressure sending unit is a sensor with an internal diaphragm, if the internal diaphragm is damaged , or the line to the diaphragm is blocked you can get this kind of fluctuation on the oil pressure gauge.

The oil pressure value must be read by installing a mechanical gauge near to the oil pressure switch and checking the pressure.

If pressure is ok, replace the sending unit. If there is a real pressure drop, check the oil pump.

If you still get fluctualtion after replacing the oil pressure sending unit, replace the oil pressure gauge.

Nov 24, 2008 | 2003 Toyota Sequoia

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