Quote:
Originally Posted by Stl-986
Would really replace that new WP with one with a metal impeller, then drain & fill the coolant.
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While I generally agree with STl's advice 99% of the time, this will be the 1 time I disagree. If you have a metal impeller WP, as it ages and the shaft begins to wobble, the metal impeller will grind out the cavity as it will be the stronger metal in the equation. That will cause a sealing problem with the next WP and the reason why they come with plastic impellers - when the wobble begins, the plastic is the softer material and loses the rubbing battle. If it goes on for long, a chunk of the impeller breaks off.
It's considered a joke about the "lifetime" antifreeze in these cars because the WP fails before you have a chance to wear out the "lifetime" antifreeze. Water pumps are considered a consumable that should be replaced after a certain # of miles or yrs.
Blue's suggestion of a coolant pressure testing kit is a good one regardless if the smoke is from the AOS or not. Since there was a chunk lost on the wp, you need to test whether that caused an overheating issue.
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