Chrysler Repair: 98 Chrysler grand voyager 3.3 L oil light and chime, oil pressure gauge, chrysler grand voyager

Question
I have seen some of your responses, I think I have a similar general issue with light and chime comes in at idle RPM/stop sign, goes away when running/higher RPM.  Is there a good picture to show how to remove the harness from the oil sensor? Will oil at the harness/contacts affect the sensor?  Any other tips will be greatly appreciated.

Answer
Hi Albert,
The combo oil pressure/warning light sender for the oil is located either next to the dipstick tube or on the front of the engine (where the pulleys are), I am just not certain but I believe it is near the dipstick. It is rod shaped and screwed into the engine block. It has a 1-wire connector and the wire is colored gray/black. There is a locking-tab on the side of the connector which if you lift up slightly while pulling on the connector will allow it to be released. (If you have an oil pressure gauge on the instrument cluster then the harness will have two wires, gray and gray/yellow) I don't believe that any oil on the sender or the harness will affect the electrical accuracy of the unit. But the sender could be out of calibration. I don't have the spec for the minimum pressure to turn off the sender's warning light/chime, but the engine itself requires at least 4 psi at idle for avoiding engine damage. It could be that your sender is being pessimistic. The only way to find out is to put a gauge in place of the sender and see what the idle pressure actually is; or if the sender is less expensive than the mechanic will charge you to measure the pressure (or the cost of an oil pressure gauge is more expensive than a sender) then buy and install a new sender to see if that solves the problem.
That would be my suggestion. If you find the oil pressure at idle to actually be at 4 psi or less, than you could increase the weight/viscosity of the oil you are using to raise the pressure. Let me know how this works out for you.
Roland