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HOMESERVICE MANUALSCHEVROLET1999CAMARO BASE, 2D CONVERTIBLE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - SYSTEM TESTING & ENGINE COMPONENT TESTSEMISSION SYSTEMS & SUBSYSTEMSAIR INJECTIONELECTRIC AIR PUMP RELAY (5.7L)
1999 Chevrolet Camaro Base, 2D Convertible, Automatic

Electric AIR Pump Relay (5.7L)

1999 Chevrolet Camaro Base, 2D Convertible, AutomaticSECTION Electric AIR Pump Relay (5.7L)
  1. Start engine. With engine operating in open loop, electric air pump should run and air should be coming out of electric air pump exhaust port.
  2. If electric air pump is operating, allow engine to idle for at least 3 minutes. With vehicle in closed loop (or about 3 minutes after start), PCM should de-energize electric air pump relay and electric air pump should stop. If air pump does not operate as described, go to next step. If air pump operates as described, relay is functioning properly.
  3. Remove air pump relay from fuse/relay block. Air pump should stop. If air pump stops, check or replace faulty relay. If air pump does not stop, check circuit to air pump for a short to battery voltage.
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.