Oil Level Gauge Ground Location

[mystert]

The oil level gauge on my car starts off reading properly but after driving it a few miles it pegs and stays there. After doing some searching it sounds like I have a bad ground. Where it the oil level gauge grounded? Is it up under the dash or on the oil tank itself? Id like to take it apart and clean the connection, get it working properly again. Thanks

[Hamptonsam]

The gauge is only accurate at normal operating temp. If the gauge is showing mid way at cold and pegs when warm, than likely it is over filled. Oil expands when heated so should only be checked hot. Also you would want thermostat open as well.

[Hamptonsam]

Also should only be accurate at idle.

[mystert]

The oil level is correct as per the dipstick. The gauge is just pegged. Overfill is not an issue. Just want to clean the ground off but not sure where it is. Does it ground through the sender on the side of the oil tank or near the gauge under the dash?

[sthein]

Originally Posted by mystert

The oil level is correct as per the dipstick. The gauge is just pegged. Overfill is not an issue. Just want to clean the ground off but not sure where it is. Does it ground through the sender on the side of the oil tank or near the gauge under the dash?

Mine did the same and here is what I determined. The gauge, if not grounded (disconnected at the gauge, itself, pegs. The sender on the tank works to ground. That means the sender itself is grounded to the tank. I would tighten all the nuts on the sender surround. Do that from the wheelwell on the right side; it is possible to do this with the wheel still mounted. If that does not do it I would check the spade connection on the tank sender, itself. You may need to clean it and check the connection. If the problem persists, ground the lead to the tank sender and the gauge should always read zero or low level. If it moves upward (and pins), the problem is either in the gauge itself or the wire between the sender and the gauge. st