Pcv 2004 lincoln ls 3.9l where - 2004 Lincoln LS

SOURCE: pcv valve

AutoZone can help with diagrams

SOURCE: 2002 LINCOLN LS V6 3.0 PCV VALVE LOCATION

it is down under the intake manifold. the intake manifold must be removed to get to it. this vehicle is known for developing a vacum leak in the elbow hose that connects to pcv valve, so ive done a few.

SOURCE: 2004 Lincoln LS A/C Valve

In order to charge, you must locate the low pressure valve to install the refrigerant. The low pressure valve is between the compressor and the evaporator. Do not charge on the High Pressure side, The high pressure valve is between the compressor and the condenser. To locate the low pressure valve, follow the line that comes from the compressor and routes toward the firewall. The valve will be somewhere on that line. Do not overcharge. The amount of pressure that is needed on the low pressure side will depend on the ambient outside temperature.

SOURCE: My 2004 ls lincoln 2004 ls is rough sometimes only

The air filter should be changed frequently. The Lincolns have longer warranties than most cars.
You might want to go to a dealer and see if you still have warranty left.
Some parts will cause idle problems and not set off the Codes. You may need the idle adjusted. Your car may need the EGR passages cleaned under the airhorn. Sometimes on all cars the O2 sensors operate within approved range, but when 2 of them are combined they work against each other.

A dealer can run a diagnostic for spark and fuel pressure to insure peak performance.

Testimonial: "hey , thank you! The car sstill in waranty until December. I already made an appointment. We'll see what happen."

SOURCE: how can i find the keypad code on my 2004 lincoln

In the grey folder with your owners manual,is a white card with the factory code,for the keyless entry keypad. It also, tells you, how to put in your own code