Circuit/System Testing
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- With the ignition OFF, inspect the crankshaft balancer bolt for the proper torque. Refer to Fastener Tightening Specifications
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- If the crankshaft balancer bolt is not at the proper torque, refer to Crankshaft Balancer Replacement .
- Remove the intake CMP actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Replacement .
- Connect a jumper wire between the high control circuit of the CMP actuator solenoid and battery voltage. Connect a jumper wire between the low reference circuit of the CMP actuator solenoid and a good ground. The pintle of the solenoid should move.
- If the pintle inside the CMP actuator solenoid does not move, replace the CMP actuator solenoid.
- Inspect the intake CMP actuator for binding or being stuck.
- Inspect the engine for correct valve timing. Refer to Timing Chain, Sprockets, and/or Tensioner Replacement .