Mercury Monarch Fuel 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

(26)

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

(26)

Fuel Pump Replacement Estimate for Mercury Monarch

Mercury Monarch Fuel Pump Replacement costs $309 on average.

CarServiceEstimateShop/Dealer Price
1978 Mercury MonarchV8-5.0LService typeFuel Pump ReplacementEstimate$535.15Shop/Dealer Price$656.34 - $992.01
1978 Mercury MonarchL6-4.1LService typeFuel Pump ReplacementEstimate$515.15Shop/Dealer Price$636.36 - $972.04
1975 Mercury MonarchL6-4.1LService typeFuel Pump ReplacementEstimate$515.15Shop/Dealer Price$636.36 - $972.04
1980 Mercury MonarchV8-4.2LService typeFuel Pump ReplacementEstimate$515.15Shop/Dealer Price$636.34 - $972.00
1979 Mercury MonarchV8-5.0LService typeFuel Pump ReplacementEstimate$515.15Shop/Dealer Price$636.37 - $972.07
1976 Mercury MonarchL6-4.1LService typeFuel Pump ReplacementEstimate$515.15Shop/Dealer Price$636.36 - $972.04
1977 Mercury MonarchV8-5.0LService typeFuel Pump ReplacementEstimate$520.15Shop/Dealer Price$641.22 - $976.80
1980 Mercury MonarchV8-5.0LService typeFuel Pump ReplacementEstimate$520.15Shop/Dealer Price$641.59 - $977.46
Show example Mercury Monarch Fuel Pump Replacement prices

Fuel Pump Replacement Service

What is the fuel pump and how does it work?

The fuel pump supplies pressurized gasoline to each of the fuel injectors in a car’s engine. The fuel pump is powered by a compact electric motor and is located in the vehicle’s gas tank. The pressure and output of the pump are controlled by a regulator. Filtration of the fuel occurs either in the fuel tank using a pickup screen or externally with a replaceable filter mounted in the fuel supply line.

When to consider replacing the fuel pump?

A high quality, OEM fuel pump can last indefinitely. However, as with any electro-mechanical component, a fuel pump will eventually degrade and fail. If it fails to produce adequate pressure or completely quits operating, it will need to be replaced. This failed condition can sometimes be preceded or accompanied by one or more of the following symptoms:

  • Car won’t start or unexpectedly stalls and won’t re-start. A failed fuel pump may prevent a car from starting or stall it.
  • Check engine light is on. Sometimes a fuel pump will fail slowly, and that means the fuel pressure and volume slowly degrades. The lack of fuel may result in the engine operating without enough fuel relative to the amount of air, causing the check engine light to appear.
  • Whirring noise from fuel tank. As a fuel pump fails, you may notice a whirring or humming noise coming from the fuel tank area, toward the rear of the car. If the noise is from the fuel pump, failure of the pump is often imminent and you should replace the fuel pump at your earliest convenience.

How do mechanics replace the fuel pump?

  • The fuel pump is tested to be sure it isn’t functioning.
  • Should the fuel pump be faulty, it is removed from the tank through an access panel above the tank in the passenger compartment.
  • When no access panel exists, fuel is first drained from the tank and then the fuel tank must be lowered from the vehicle to gain access to the pump.
  • In all cases, fuel pump supply and return hoses, as well as EVAP system hoses, and electrical connections to the pump must be removed.
  • Once the pump is out, any reusable brackets and pick up screens are attached to the new pump, then the new pump is installed.
  • If the fuel system uses an in-line external filter, a filter is often replaced. All hoses and electrical connections are re-established.
  • Fuel is added to the tank and the engine is run to test for leaks.

Is it safe to drive with a fuel pump problem?

Usually, it’s still safe to drive, but the pump may lead to an overheated engine and catalytic converter. Complete fuel pump failure can leave you stranded out on the road, but many times a car won’t start before initially driving.

However, if the fuel pump problem involves leaks of gasoline or vapors, it is unsafe to continue driving, and should immediately be checked by a qualified mechanic.

When replacing the fuel pump keep in mind:

  • Prior to replacing, the mechanic will power the fuel pump directly to confirm that the issue is a failed pump versus a faulty power supply to the pump.
  • Unless the fuel filter was replaced recently, whenever the fuel pump is replaced a new fuel filter should be installed.
  • When failing earlier than expected, the power supply should be verified because a voltage drop in the fuel pump circuit can lead to overheating.
  • Should the fuel tank be lowered during the repair, the fuel tank straps and fasteners should be checked for excessive corrosion and replaced as needed.
  • The fuel in the gas tank cools and lubricates the fuel pump. After installation of a new fuel pump, it’s wise to keep the gas tank at least a quarter full to maximize the life of a new fuel pump.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercury mechanics

Real customer reviews from Mercury owners like you.

Excellent Rating

(26)

Rating Summary
24
2
0
0
0
24
2
0
0
0

David

28 years of experience
142 reviews
David
28 years of experience
Mercury Mountaineer V6-4.0L - Fuel Pump - San Diego, California
Very good

Miguel

2021 years of experience
56 reviews
Miguel
2021 years of experience
Mercury Grand Marquis V8-4.6L - Fuel Pump - Tavares, Florida
Miguel did a great job, I am happy with the work he completed.

Manuel

32 years of experience
554 reviews
Manuel
32 years of experience
Mercury Grand Marquis V8-4.6L - Fuel Pump - Corona, California
Excellent Service. Fixed the problem right away. Job well done.

Jeshua

7 years of experience
131 reviews
Jeshua
7 years of experience
Mercury Grand Marquis V8-4.6L - Fuel Pump - Bradenton, Florida
Great communication, always kept me informed though all steps of the process from inspection to completion, as well as, work around my schedule. Very highly recommend!

Excellent Rating

(26)

Rating Summary
24
2
0
0
0
24
2
0
0
0
Number of Mercury Fuel Pump Replacement services completed
286+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

Recent articles & questions

How Long Does an Anti-Lock Pressure Switch Last?
Anti-lock Anti-lock braking systems (ABS) are standard on late-model vehicles, and can greatly enhance your safety when braking in difficult conditions. If you have to stop suddenly, or if you are driving on slippery surfaces, the ABS prevents your wheels...
P2552 OBD-II Trouble Code: Throttle/Fuel Inhibit Circuit
P2552 P2552 code definition A P2552 OBD-II trouble code indicates a problem with the throttle or fuel inhibitor circuit. This is a malfunction more commonly found in diesel-powered vehicles. This code is also associated with OBD-II trouble codes P2553, P2554,...
10 Best Stores to Buy Auto Parts in Columbus, Ohio
Automotive technicians rely on auto parts stores to add and replace car parts. The best auto parts shop in Columbus is NAPA Auto Parts.

Dash gauges acting weird.

I can't give you much advice without knowing which warning lights are coming on. As far as the oil pressure gauge is concerned, it could be a problem with the oil pressure sending unit, the sending unit circuit or the...

Odometer runs backwards while running forward.

Many older vehicles used manual gear arrangements to run the odometer. This means that a mechanical system was required to make the odometer function. It is possible that the gears have been lodged or rearranged in such a way to...

Need to know the size and weight infomation for a 42RLE transmission.

Hi there. The transmission weights around 125 to 150 lbs and may weigh additional 125 pounds if there is a transfer case attached to it. The transmission overall length is around 3.4 feet depending on the type of output shaft...

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