2004 lincoln navigator keeps beeping shows hot up hill cool and beeping stops down hill

Marvin

• 85242 Answers
• Posted on Mar 24, 2009

SOURCE: I have a 2001 lincoln Navigator The overdrive kept flashing

one question at a time, the OD flashes to let u know that the transmission control module has detected a fault in the trans, this is useualy slipping, u may not even feel it. Have it tested for trouble codes.
As for the AC, is the system fully charged, does the compressor run?

SOURCE: My 2004 Lincoln LS is sputtering/hesitating. It

could be your coils?

SOURCE: 1999 Lincoln Navigator stops blowing hot air

Since your blower is working and it is a heat issue,thats where we'll start,First thing is have you checked the coolant level in the radiator when engine is cold,make sure it is filled to top,next verify you have coolant in reserve ,Start your van and get it up to normal operation temperature,If your heat gauge on the dash works correctly it should be 190 degrees,Now lift the hood and locate the two heater hoses going into the heater assembly at the fire wall,Both hoses should be hot to hold on to,if both are hot and no heat inside your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.

SOURCE: po320 code and code po303 2004 lincoln navigator

Replaced a camshaft sensor still running rough & engine light still on, 2004 lincoln nav. 5.4 liter

SOURCE: front air suspension stopped working

Vehicle Dynamic Suspension The four wheel air suspension system is comprised of the following components:

• service switch
• control module
• two front height sensors
• one rear height sensor
• compressor and drier assembly (includes vent solenoid)
• air lines
• front and rear air spring and shock absorber assemblies
• four air spring solenoids

• Restricted suspension movement
• Excessive vehicle load
• Cut, severed, crimped air line(s)
• Unmounted height sensor(s)
• Damaged front air spring(s)
• Damaged rear air spring(s)

• Battery junction box (BJB) fuses 20 (30A), fuse 27 (5A), and fuse 111 (50A)
• Loose, corroded, or disconnected connectors
• Air suspension service switch is in the OFF position
• Damaged solenoid valve(s)

1. If the inspection reveals an obvious concern that can be readily repaired, correct the concern before continuing with Inspection and Verification.

1. If the concern remains after the inspection, use the scan tool connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute On-Demand Self-Test diagnostics for the 4WAS module.
   • If the On-Demand Self-Test is passed and no DTCs are retrieved, GO to Symptom Chart to continue diagnostics.
   • If DTCs are retrieved, go to the 4WAS Module Diagnostic Trouble Code (DTC) Index in this section.
   • If the 4WAS module cannot be accessed by the scan tool, Go To Pinpoint Test A .