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 MANUALSFORD2004ECONOLINE E150, VAN CARGO, 4.6 WREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 24 (MANUAL A/C-HEATER SYSTEMS)PERFORMANCE TESTSA/C SYSTEMCOMPRESSOR SUCTION (LOW) PRESSURE
2004 Ford Econoline E150, Van Cargo, 4.6 W
Compressor Suction (Low) Pressure
2004 Ford Econoline E150, Van Cargo, 4.6 WSECTION Compressor Suction (Low) Pressure
WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If ambient temperatures is 100-110°F (38-43°C), system performance pressures will be same as those for ambient temperatures shown on chart in 90-100°F (32-38°C) range. See Fig 1.
To determine compressor suction (low) pressure, record ambient temperature. Record suction (low) pressure. System performance is acceptable when pressure reading falls between upper and lower limits shown. See Fig 1.
RENDER: 1.0x
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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.