The oil light comes on at idle in a 2004 Sebring with the four cylinder engine where is pressure switch and or sending unit can it be easily replaced?

The oil pressure sending unit on a 2004 Chrysler Sebring with a 4-cylinder engine is typically located on the engine block, near the oil filter. It's a small, usually cylindrical component with one or more wires connected to it. It's *not* the same as the oil pressure switch, which is usually a different component involved in activating other systems (like a warning chime). The sending unit is what directly feeds the oil pressure gauge and the oil pressure warning light.

Location Specificity: Precise location varies slightly depending on the exact engine (2.4L or 2.7L) but it's usually fairly accessible. You'll likely need to consult a repair manual specific to your vehicle's year, engine, and trim level for the exact location. A picture search on Google Images for "2004 Chrysler Sebring 2.4L engine oil pressure sending unit" or "2004 Chrysler Sebring 2.7L engine oil pressure sending unit" might show you images that match your engine.

Ease of Replacement:

Replacing the oil pressure sending unit is generally considered a relatively easy job, even for someone with moderate DIY skills. However, it does involve working with engine oil, so be prepared for a bit of mess.

What you'll need:

* New oil pressure sending unit: Make sure to get the correct part number for your specific engine.

* Wrench(es): The correct size to remove the sending unit (usually a socket).

* Drain pan: To catch any spilled oil.

* Rags or shop towels: To clean up spills.

* Possibly a new crush washer: The sending unit often uses a crush washer that should be replaced when you install the new unit to ensure a good seal.

* Repair manual (highly recommended): This will provide detailed instructions and diagrams specific to your vehicle. A Haynes or Chilton manual would be helpful.

Caution:

* Hot Engine: Let the engine cool completely before attempting this repair. Hot oil can cause serious burns.

* Oil Pressure: Be aware that there will be some oil pressure remaining in the system even after the engine has been off for a while.

* Thread Damage: Be careful not to overtighten the new sending unit.

If you're not comfortable working on your car, it's always best to take it to a qualified mechanic. A faulty oil pressure sending unit is relatively inexpensive to have replaced, but neglecting low oil pressure could cause serious engine damage. Before replacing the sending unit, make absolutely sure your oil level is correct and your oil is not contaminated. A faulty sensor is a far better problem than low oil!