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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 33 (HVAC SYSTEMS - MANUAL)PERFORMANCE TESTSA/C SYSTEM PERFORMANCE TESTCHECK DESCRIPTION
2004 Oldsmobile Bravada AWD

Check Description

2004 Oldsmobile Bravada AWDSECTION Check Description
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

This test measures the operating efficiency of the A/C system under the following conditions:

  • The Current Ambient Air Temperature
  • The Current Relative Humidity
  • The High Side Pressure Of The A/C System
  • The Low Side Pressure Of The A/C System
  • The Temperature Of The Air Being Discharged Into The Passenger Compartment

  1. Park the vehicle inside or in the shade. Open the windows in order to ventilate the interior of the vehicle. If the A/C system was operating, allow the A/C system to equalize (about 2 minutes). Ensure that the ignition key is in the OFF position. Install the ACR 2000 Air Conditioning Service Center. Record the ambient air temperature displayed on the ACR 2000 Air Conditioning Service Center. Record readings of the low and high side static pressures. Are both the low and high side pressures within the specified value?
    • Above 60°F (16°C) - 50 Psi (345 kPa)
    • Above 75°F (24°C) - 70 Psi (483 kPa)
    • Above 90°F (33°C) - 100 Psi (690 kPa)
    If so, go to next step. If not, leak test system. See LEAK TESTING in GENERAL SERVICING PROCEDURES article in GENERAL SERVICING.
    2. NOTE: Record the relative humidity and the ambient air temperature at the time of the test.
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.