Loose Impeller
WARNING: This page is about a different variant/trim than selected.
NOTE:
Due to the design of the engine water pumps, testing the pump for a loose impeller must be done by verifying coolant flow in the radiator. To accomplish this refer to the following procedure:
DO NOT WASTE reusable coolant. If solution is clean, drain coolant into a clean container for reuse.
- Drain coolant until the first row of cores is visible in the radiator. Refer to STANDARD PROCEDURE .
- Leaving the radiator cap off, start the engine. Run engine until thermostat opens.
- While looking into the radiator through the radiator fill neck, raise engine RPM to 2000 RPM. Observe the flow of coolant from the first row of cores.
- If there is no flow or very little flow visible, replace the water pump.