Air Supply Pump

1991 Ford Thunderbird LX, 5.0 TSECTION Air Supply Pump

Check belt tension and adjust to proper tension, if necessary. Disconnect air supply hose from by-pass control valve. Start engine. Pump is operating satisfactorily if airflow is felt at pump outlet and airflow increases as engine speed is increased. If this condition is not met, replace pump.

CAUTION: DO NOT pry on the air supply pump to adjust belt tension. Aluminum housing of pump may collapse.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.