20 Most Recent 2001 Lincoln Navigator - Page 7 Questions & Answers

you need to drop the oil pan is the engine noisy?if not check the oil pressure sending unit

might be a motor mount?Call dealer or look online.

Keep hammering. They freeze onto the hub. Sometimes it is necessary to break them before they will come off. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Check the fuses. Usually the data link connector is powered of an accessory fuse or the cigar fuse. If the fuse is blown than there will be no communication with the computer. Once the fuses are checked and any blown ones are replaced bring it back to have it scanned. I agree that it sounds like a coil. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

The air bags commonly go bad on these trucks as well as the Expeditions. They are called Air Springs. I sell better quality ones than those sold at auto part stores and they are also a bit cheaper than dealer parts. But either way the problem is you have bad air springs.

Has the battery been disconnected?

The flap that closes to change from the floor to vents may be defective.

Without all the technical detail -your EGR Valve is bad

sounds likee fuel pump or filter to me