The water pump circulates coolant through the engine, radiator and heater core. When the seal fails it leaks, and when the bearing or impeller fails the coolant stops moving and the engine overheats quickly. AutoTech Clinic replaces water pumps at 24100 Michigan Ave in Dearborn.
Whether this is a half day job or a full day depends entirely on how your pump is driven. A pump on the serpentine belt is straightforward. A pump driven by the timing belt or chain means opening the front of the engine.
- How Long
- From about 2 hours on a belt driven pump to a full day on a timing driven one.
- Same Day
- Time frame confirmed before you leave the car.
- Vehicles
- Foreign and domestic, cars through trucks.
Signs You Need Water Pump Replacement
- Coolant dripping from the front of the engine, often from a weep hole
- A whine or grinding from the front of the engine that changes with rpm
- The temperature gauge rising, especially under load
- Play or wobble in the pump pulley
- Steam from the front of the engine bay
- The heater going cold while the engine runs hot, which means no flow
What We Do
- 01
Confirm the Source
We pressure test the system and inspect the weep hole, which is designed to leak when the internal seal fails and is the clearest confirmation.
- 02
Check Bearing and Impeller
We check the pulley for play and roughness, and on plastic impeller designs we look for erosion that stops flow without any leak.
- 03
Plan the Job Correctly
If the pump is driven by the timing belt, we discuss doing the belt, tensioner and idlers at the same time, because the labor is shared.
- 04
Replace With Quality Parts
We fit a pump that matches the original specification, with a new gasket or seal and the correct torque sequence.
- 05
Refill, Bleed and Watch
We refill with the correct coolant, bleed the system fully, run it to temperature and confirm there are no leaks hot or cold.
Do the Timing Belt at the Same Time
On engines where the timing belt drives the water pump, the cost of the job is almost entirely labor to reach the front of the engine. Once we are in there, adding a belt, tensioner and idlers is a parts cost only.
Doing them separately means paying that labor twice, usually within a couple of years. We will show you the numbers side by side so the decision is yours and it is an informed one.
Plastic Impellers Fail Quietly
Many modern pumps use a plastic impeller. Over time the blades erode or the impeller slips on the shaft, and the pump stops moving coolant even though it is not leaking and the pulley spins normally.
The symptom is overheating with a full coolant reservoir and no visible fault, which fools a lot of people into replacing a thermostat or a radiator first. We check flow directly so we are not guessing.
What Affects the Cost
We quote your vehicle specifically after inspecting it, because these are the things that move the number up or down:
- Whether the pump is driven by the serpentine belt or the timing belt or chain
- Timing components replaced at the same time, which is strongly recommended
- Coolant type and quantity
- Access, which varies enormously between engines
- Whether a thermostat, hoses or the belt are replaced while open
Call (313) 277-7200 with your year, make and model and we will tell you what to expect before you come in.
Why AutoTech Clinic
AAA Approved
An inspected facility that has to meet AAA standards for equipment and training.
Photos First
You see what we found and approve the price before anything is taken apart.
Same-Day Service
Parts on hand for the vehicles we see most, so you are not waiting on a delivery.