Mercury Grand Marquis Ignition Cable (Spark plug wires) Replacement at your home or office.

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Ignition Cable (Spark plug wires) Replacement Estimate for Mercury Grand Marquis

Mercury Grand Marquis Ignition Cable (Spark plug wires) Replacement costs $166 on average.

CarServiceEstimateShop/Dealer Price
1986 Mercury Grand MarquisV8-5.0LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$201.71Shop/Dealer Price$239.54 - $325.13
1983 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$260.39Shop/Dealer Price$317.91 - $462.52
1993 Mercury Grand MarquisV8-4.6LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$268.75Shop/Dealer Price$328.36 - $479.24
1984 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$195.05Shop/Dealer Price$236.21 - $331.80
1984 Mercury Grand MarquisV8-5.0LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$195.05Shop/Dealer Price$236.25 - $331.87
1981 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$260.39Shop/Dealer Price$317.91 - $462.52
1990 Mercury Grand MarquisV8-5.0LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$196.59Shop/Dealer Price$236.77 - $329.68
1980 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$265.39Shop/Dealer Price$323.14 - $467.94
Show example Mercury Grand Marquis Ignition Cable (Spark plug wires) Replacement prices

Ignition Cable (Spark plug wires) Replacement Service

What is the Ignition Cable (Spark plug wires) all about?

The ignition cables, also known as “spark plug wires” are part of the ignition system. They transfer the spark from the distributor or ignition coil to spark plugs that ignite the air-fuel mixture, starting the engine.

Over time, the cables can get weak and break down. This will make it harder for the spark to reach the engine cylinders, resulting in engine misfires. The car may not start at all. If one of the spark plugs has gone bad, the car will still start and run, but it will run poorly.

Keep in mind:

  • Ignition cable failure is often caused by other failing pieces in the ignition system; a mechanic should check for any other malfunctioning parts, and replace any parts of the system that don’t work.
  • Every time the ignition cables are replaced, the spark plugs should be inspected.
  • Leaking oil or coolant can cause ignition wire failure. If this is the case, the cause of the leak should be repaired or replaced, or else the new ignition wires will quickly be damaged as well.

How it's done:

  • Scan the computer system in the car for codes.
  • Inspect ignition cables (look for white spots).
  • Ohm test on individual cables.
  • Remove and replace the cables if found faulty.
  • Inspect the spark plugs.
  • Clear the codes.

Our recommendation:

Ignition wires should be replaced at least every 60,000 miles, but whenever your car is serviced, it’s a good idea to have the entire ignition system inspected. Any time that you have spark plugs replaced, it’s a good idea to have the ignition wires replaced as well. If you notice that your engine is running poorly, you should schedule an inspection.

What common symptoms indicate you may need to replace the Ignition Cable (Spark plug wires)?

  • Check Engine light is on.
  • Engine misfires.
  • Poor gas mileage.
  • Engine may shake (light vibration).

How important is this service?

The fuel in your automobile is ignited by a spark. This starts with the ignition coil, which transforms low voltage power into extremely high voltage. This high voltage is transferred through the ignition cables, and to the spark plug, where a spark is created that ignites the engine’s fuel, and powers the engine.

When one or more ignition cables fail, this voltage will not be transferred from the ignition coil to the spark plugs, and the fuel will not be ignited. Depending on how many of your ignition cables malfunction, your car will either run poorly, or won’t run at all.

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Rating Summary
354
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Bradford

13 years of experience
68 reviews
Bradford
13 years of experience
Mercury Grand Marquis V8-4.6L - Car is not starting - Temple Hills, Maryland
Never having used this kind of service previously, I was pleased with the ease of making the appointment and receiving updates. Brad was very nice, especially since it was extremely hot that day, and seemed very knowledgeable. Appreciate the good service and advice.

Kyle

12 years of experience
137 reviews
Kyle
12 years of experience
Mercury Grand Marquis V8-4.6L - Car is not starting - Philadelphia, Pennsylvania
Great mechanic very experienced and knowledgeable and very passionate about what he does

Joel

21 years of experience
987 reviews
Joel
21 years of experience
Mercury Grand Marquis V8-4.6L - Power Steering Pressure Switch - Jacksonville, Florida
He was great in every way.Thank-you

John

36 years of experience
417 reviews
John
36 years of experience
Mercury Grand Marquis V8-4.6L - Oil Change - Belmont, California
Excellent. Very knowledgeable. I am a happy customer.

Excellent Rating

(376)

Rating Summary
354
12
4
2
4
354
12
4
2
4
Number of Mercury Grand Marquis services completed
4136+
services done by our mechanics
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600+
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