Mitsubishi Sigma Water Pump Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

customer ratings

(11)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

customer ratings

(11)

Water Pump Replacement Estimate for Mitsubishi Sigma

Mitsubishi Sigma Water Pump Replacement costs $590 on average.

CarServiceEstimateShop/Dealer Price
1990 Mitsubishi SigmaV6-3.0LService typeWater Pump ReplacementEstimate$865.07Shop/Dealer Price$1023.40 - $1370.03
1989 Mitsubishi SigmaV6-3.0LService typeWater Pump ReplacementEstimate$673.36Shop/Dealer Price$809.11 - $1096.21
Show example Mitsubishi Sigma Water Pump Replacement prices

Water Pump Replacement Service

What is a water pump and how does it work?

The water pump is a belt or chain-driven engine accessory bolted to the engine above the crankshaft pulley. The pump housing has an impeller that circulates engine coolant through the cooling system passageways in the engine block and cylinder head, on to the radiator, where the coolant temperature is reduced. . The lower temperature coolant then flows back to the water inlet on the engine and the water pump continues the cycle.

When to consider replacing the water pump:

  • Coolant leaks or overheating. The water pump impeller shaft is supported by a bearing. Eventually, the bearing or seal can wear and leak or damage the impeller. Many water pumps have weep holes near the pump bearing. If you see significant leakage from that weep hole, it is time to replace the pump.
  • Bearing roughness or noise. If the water pump shaft does not turn smoothly or the pump is noisy, the bearing is excessively worn. Pump replacement will be necessary.
  • Timing belt replacement. In engines where the water pump is driven by the timing belt, it is a good idea to replace the water pump at the same time the timing belt is replaced. The extensive work explains why it is always recommended to replace the water pump whenever the mechanic already has these components removed for regularly scheduled timing belt replacement.

How do mechanics replace the water pump?

  • The water pump is usually bolted to the front of the engine. The replacement procedure will vary depending on whether the pump is driven by the timing belt, the serpentine belt, or chain.
  • On a cold engine, the engine coolant is drained to a level below the water pump.
  • Components that require removing to access the water pump are removed, including the belt or chain that directly drive the pump.
  • The bolts holding the pump to the engine are removed and the pump is pulled out.
  • The gasket surface must be cleaned and the pump mounting surface inspected. A new gasket, rubber seal, or RTV sealant, as required, is installed and then the new pump. The bolts are torqued in sequence using a calibrated inch pound torque wrench.
  • For applications where the water pump is driven by the timing belt, the timing belt must be removed. Typically, this requires removal of the crankshaft pulley, timing belt covers, and timing belt tensioner. Once the new pump is installed, new coolant is added back while bleeding the cooling system of any air. The engine is then run and brought to normal operating temperature to check for leaks and ensure normal operating temperature.

Is it safe to drive with a water pump problem?

No. Should the water pump only leak a little bit, you can drive the car. However, a small leak could suddenly enlarge or the pump bearing might unexpectedly seize. Either circumstance would likely cause engine overheating. If a defective water pump causes the overheating, it is not safe to drive because of the damage to the engine.

When replacing the water pump keep in mind:

  • It is best to install a new cooling system thermostat when you install a new water pump, especially if the thermostat is old or original.
  • Completely flushing the cooling system is a good idea when you replace the water pump. Flushing can be done before or after pump replacement.
  • The rest of the cooling system should be inspected too — particularly rubber hoses, which have a limited lifetime.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mitsubishi mechanics

Real customer reviews from Mitsubishi owners like you.

Excellent Rating

(11)

Rating Summary
10
1
0
0
0
10
1
0
0
0

Pete

16 years of experience
192 reviews
Pete
16 years of experience
Mitsubishi Lancer L4-2.0L - Water Pump - El Cajon, California
Pete is an excellent mechanic and a great guy. He went out of his way to get the job completed under pressure and under the scorching hot sun. He's my guy from now on!

Raul

34 years of experience
285 reviews
Raul
34 years of experience
Mitsubishi Eclipse L4-2.4L - Water Pump - Fremont, California

Jose

17 years of experience
154 reviews
Jose
17 years of experience
Mitsubishi Outlander L4-2.4L - Water Pump - Las Vegas, Nevada
professional and efficient, the best mechanic I have ever met.

Cary

27 years of experience
92 reviews
Cary
27 years of experience
Mitsubishi Eclipse L4-2.4L - Water Pump - Raleigh, North Carolina

Excellent Rating

(11)

Rating Summary
10
1
0
0
0
10
1
0
0
0
Number of Mitsubishi Water Pump Replacement services completed
121+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mitsubishi MECHANICS
700+
experts on our platform

Recent articles & questions

West Virginia Parking Laws: Understanding the Basics
Even Even though you might not realize it, a big part of driving is knowing where you can and cannot park legally. If you are illegally parked, you may end up having your car towed. At the very least, you...
The Guide to Right-of-Way Laws in Maine
Most Most of us rely on traffic signs and signals to tell us what we have to do when driving. But what if there are no signs or symbols? What do you do then? Then, you need to know the...
How to Transfer a Car Title in Tennessee
In In the state of Tennessee, any change in ownership of a vehicle must be accompanied by a transfer of the car’s title from the previous owner’s name to the new owner’s name. This applies to car purchases/sales, but it...

Whole radio stops and shuts off at random

Hello! Thank you for writing in with this question. Many Toyota vehicles have been affected with similar issues. Oftentimes, this problem is caused by a ground issue in the faceplate of the radio. Toyota offers an updated factory radio. You...

Car shuts off while idling

Hello. This can be caused by many things on this vehicle, but the most common one is the crankshaft position sensor. I have seen many of these fail on this car and cause this. I usually use a scan tool...

Check engine, VSC, and the red triangle and another light is on

While the car may be safe to drive, I would not recommend driving it with these codes on as many of these can cause a chain reaction of issues when one component is failing. I suggest having a local expert,...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com