Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLINCOLN2008NAVIGATOR 4WD V8-5.4LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGSPECIFICATIONSCLIMATE CONTROL SYSTEMGENERAL SPECIFICATIONS
2008 Lincoln Navigator 4WD V8-5.4L
General Specifications
2008 Lincoln Navigator 4WD V8-5.4LSECTION General Specifications
Item Specification
A/C Compressor
Type FS20
A/C Compressor Magnetic Clutch
Air gap clearance 0.35-0.65 mm (0.014-0.026 in)
A/C Pressure Relief Valve(a)
Open pressures 3,792-4,137 kPa (550-600 psi)
Evaporator Discharge Air Temperature Sensor
On temperatures 2.2-3.3°C (36-38°F)
Off temperatures 2.2-3.3°C (36-38°F)
a) Manifold gauge set pressures may vary slightly depending on the distance between the service gauge port valve and the A/C pressure relief valve, low charge protection and pressure cutoff switch locations.
A/C Compressor
Type FS20
A/C Compressor Magnetic Clutch
Air gap clearance 0.35-0.65 mm (0.014-0.026 in)
A/C Pressure Relief Valve(a)
Open pressures 3,792-4,137 kPa (550-600 psi)
Evaporator Discharge Air Temperature Sensor
On temperatures 2.2-3.3°C (36-38°F)
Off temperatures 2.2-3.3°C (36-38°F)
a) Manifold gauge set pressures may vary slightly depending on the distance between the service gauge port valve and the A/C pressure relief valve, low charge protection and pressure cutoff switch locations.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.