U codes are communication faults between the different modules present on your vehicle. The PCM has to maintain control via separate modules that monitor and control every aspect of it, from engine and emission control,transmission control, anti-lock, traction control, lighting, hvac, suspension control, etc...To diagnose these codes requires a quality scan tool and a technician who is experienced with these systems.
SOURCE: ball joints for a 200 Lincoln Navigator
if you need this info you should not attempt this yourself. it takes special tools and can be dangerous doing this and not knowing what not to do.also if you get it done and its not correctly done it could cause a accident hurting you or your family or others. i recomend this job be done by the pros. good luck. sorry if you did not want to hear this.
SOURCE: 2000 lincoln navigator 90k mile service
Normal Maintenance Details
90,000 Miles (144,000 Kilometers) : All Applicable Models
PERFORMED OPERATION COMPONENT
INSPECT BALL JOINTS
If equipped.
INSPECT BRAKE SYSTEM
Inspect brake pads, shoes, rotors, drums, brake lines & hoses.
INSPECT COOLING SYSTEM HOSES & CLAMPS
INSPECT DISC BRAKE PADS & ROTORS
INSPECT DRIVESHAFT
If equipped.
INSPECT DRIVESHAFT/PROPELLER SHAFT U JOINTS
INSPECT EXHAUST SYSTEM AND HEAT SHIELDS
INSPECT PARKING BRAKE SYSTEM
INSPECT STEERING LINKAGE
INSPECT SUSPENSION COMPONENTS
LUBRICATE DRIVESHAFT/PROPELLER SHAFT U JOINTS
LUBRICATE STEERING LINKAGE
REPLACE AIR CLEANER/ELEMENT
REPLACE AUTOMATIC TRANSMISSION FLUID
REPLACE CABIN AIR FILTER
If equipped.
REPLACE CLIMATE-CONTROLLED SEAT FILTERS
If equipped.
REPLACE ENGINE OIL
REPLACE ENGINE OIL FILTER
REPLACE FUEL FILTER
ROTATE TIRES
90,000 Miles (144,000 Kilometers) : RWD
PERFORMED OPERATION COMPONENT
LUBRICATE BALL JOINTS
2000 Lincoln Navigator
Maintenance
...sorry if not too readable
SOURCE: 2000 Lincoln LS and the Engine Light came on. Codes 0171 0174
you probably have a vacuum leak. check all your hoses pcv hose for sure. it means the engine is seeing too much air with the fuel.
SOURCE: I have an error code p1405 on my 2004 lincoln navigator - what is
DPFE Sensor upstream hose bad. Google DPFE Sensor location. Then remove and replace or clean hoses, Clean connectors at sensor. If this does not clear problem replace Sensor.
SOURCE: 2000 Lincoln Navigator with rough idling and service engine light
i had the same trouble, there is a rubber boot under the cover on the top of the motor, it is coming from the egr valve, takes about 5 mins to repair and less than 5 dollars.
A P0304 code means that the the car's
computer has detected that one of the engine's cylinders is not firing properly.
In this case it's cylinder #4.
You have covered a couple of the possible causes...here is the list of possible causes that you can use to continue you troubleshooting...Make sure that you CLEAR the code after each repair is made. The fuel injector would be the next i would check, it could be dirty, defective and not firing. The color/condition of the #4 spark plug would give you an idea. Hope this helps...
or wire
(s)
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