The water pump usually warns before it quits
The water pump circulates coolant between the engine and the radiator. When it fails completely, the engine overheats within minutes, which is how most drivers meet it: on the shoulder with steam coming from under the hood.
What is less well known is that most water pumps give notice first. The warning signs are small, and they are easy to dismiss because the temperature gauge is still reading normally while they happen.
A small drip at the front of the engine. Many pumps have a weep hole, a deliberate drain that lets a little coolant escape when the internal seal starts to fail. A few drops on the driveway, often crusted or colored around the pump, are that seal telling you it is going.
A whine or a grinding noise from the front of the engine that rises with engine speed. That is usually the pump's bearing wearing.
Coolant that needs topping up with no obvious leak elsewhere.
A wobble in the pulley if you can see it with the engine off and the hood up.
Any one of those is a reason to book. A pump replaced on a planned day is an ordinary repair. A pump that fails on the road can take the engine with it if the driver keeps going.
While it is being done
On many engines the pump sits next to, or is driven by, the timing belt or the accessory belt. Ask whether it makes sense to replace the belt and thermostat at the same visit, since the labor overlaps. The answer depends on the engine and the age of the parts, and it is worth hearing before the work starts.
A temperature gauge that climbs with the A/C on can also be A/C service, and an overheat that has already happened is worth an engine repair check, both here. The national cooling system page covers what to do if the gauge reaches the red.
About this store
The Tucson store runs seventeen services and is managed by Mark Laster.
See the national cooling system page for all 33 locations.