Question about 2000 Toyota 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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Posted on Jan 02, 2017
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
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
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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