Feul temp oil pressure gauge not working

cold oil is thicker, higher rpm=more pressure .factory guage is actually working like it should. if worried hook external guage on oil galley plug and check oil press.manually.

if i remember correctly there is a resister in the dash board that will need replacing, this is on the power side for both the gauges. . it will need replacing. i think a company in the 90's did a upgrade for the dash board so if its the upgrade it will be on a board. the original was on the back strip. you just cut it out and solder new one in its place to the parts left, but don't solder for to long as it can ment the strip.

Since the temp gauge is not working correctly, you get the warning message.
Could be a faulty temp sensor or a problem in the wiring harness.

could be the guage itself, the sending unit for those guages or the wiring in between. find the sending unit, should be two wires the sending unit actually changes the amount of voltage going to the guage. cross the two wires over at the sending unit, the guage should read all the way in one direction, do this for both guages. if the guage moves to an extreme position when the wires are crossed the guage and wiring are fine and the sending unit is the culprit. if you cant get the guages to move by crosing the wires, suspect the guage itself. find you a freindly garage to help w your repair. hope this is useful

Connect test leads to the guage and apply 12 volts, if the guage activates upward this works, if it's the oil preaaure in regards to the oil pump, you need to hook up a oil pressure guage.

It could be a bad gauge or a check valve could be stuck or blocked causing your oil pressure to be too high. Have your oil pressure checked at a shop.

volt meter, fuel gauge, oil pressure and coolant temp all share the same power and ground

the circuit you want to check is the yellow and white wire from the dash to the dual switch

On the rear of the instrument cluster there should be a resistor. This is how the fuel and temp guages are limited to a certain voltage decreasing the power to them so that they dont burn out. These (voltage limiters) resistors are available seperately from the dealership.

Possibly, i would check the sending unit and of course the wires that connect to the temp prob. They often become worn or even short out on other wires. I suspect that the gage is telling the truth and you have a blown head gasket. Check the oil for water. Check the water level and see if you are losing water. good luck

Hi, you will have to replace all sending units for these gauges in order to restore them to there original state. i will list the sending units and there respective locations below.

1. Fuel gauge sending unit- you will need to replace the fuel sending unit on your Olds. its located inside the actual fuel tank. there's a floater attached to this Assembly and , its broken. you will have to replace the entire assembly. you will also have to drop the fuel tank to access it as well.

2. Temp guage-- normally when this guage starts to malfunction, its because of a bad coolant temperature sensor. Inspect the sensor's wires and connections. ECT (engine coolant temperature) sensor problems are often caused by faulty wiring or loose or corroded connections rather than the failure of the sensor itself. If the wires or connections are bad, replace them. If you think the sensor is defective, it should be tested.

This sensor is located Under hood, center, upper engine area, front of carburetor, passenger side of water outlet, mounted in intake manifold.

3. Amp gauge --- OK, this can be caused by a bad voltage regulator. i would also trace every single wire from the amp gauge to the sensor and regulator. check for corroded connectors and contact clips. replace any wire that may seem worn.

4. Oil pressure gauge-- This gauge will malfunction if the Oil pressure switch is faulty or not working. This is an Information relay unit for the indicator light or gauge on instrument panel. It contains a diaphragm that responds to changes in oil pressure. When the oil level is over a pre-set limit, the diaphragm opens the switch, turning off the light. When level is below the pre-set limit, the dash light comes on. In later model cars, if the oil pressure drops, the switch turns off the fuel pump, to stop the engine and limit damage to internal parts. Oil pressure switches can be grouped into two categories, units for electrical gauges and for mechanical gauges. If this switch is defective, it will have to be replaced. Once replaced, it will fix the dead oil gauge.

This device is located Under the hood, passenger side, front engine area, mounted rear of water pump. If the wires are worn or there is an oil leak near the switch location, replace it.

Inspecting all the above areas and replacing parts if needed, will fix your gauge issues.

Please rate and god bless:)