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 $95 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$70 to $192
Labor: $70 -$80
Parts: $0 -$112
Average Dealer price
$93 to 318
Average Shop price
$83 to 224
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceEstimateShop/Dealer Price
1988 Mercury Grand MarquisV8-5.0LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$143.32Shop/Dealer Price$176.17 - $242.05
1992 Mercury Grand MarquisV8-4.6LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$211.56Shop/Dealer Price$261.54 - $378.65
1989 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$174.26Shop/Dealer Price$214.87 - $303.97
1984 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$70.00Shop/Dealer Price$84.56 - $95.49
1986 Mercury Grand MarquisV8-5.0LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$139.86Shop/Dealer Price$171.86 - $235.15
1979 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$70.00Shop/Dealer Price$84.52 - $95.40
1988 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$174.26Shop/Dealer Price$214.93 - $304.08
2000 Mercury Grand MarquisV8-4.6LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$70.00Shop/Dealer Price$84.59 - $95.52
Show example Mercury Grand Marquis Ignition Cable (Spark plug wires) Replacement prices

Ignition Cable (Spark plug wires) Replacement Service & Cost

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.

Fast and easy Ignition Cable (Spark plug wires) Replacement service at your home or office.

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Meet some of our expert Mercury mechanics

Real customer reviews from Mercury owners like you.

Theodore

12 years of experience
577 reviews
Theodore
12 years of experience
He was very attractive to what needed to be done. He provided and educated me about the care maintenance regarding my car's care, made suggestions on what I could do myself to reduce cost. He provided a great service to me and my car.
2002 MERCURY GRAND MARQUIS - OIL PRESSURE SENSOR - BOTHELL, WASHINGTON

Michael

12 years of experience
166 reviews
Michael
12 years of experience
Michael was awesome he knew the exact problem with my car after ive encounteted several visits to shops.and he took the time to explain to me everything that was going on.i had no questions to ask , he answered all of them.and got me booked for repairs.
2000 MERCURY GRAND MARQUIS - CAR IS SHAKING OR VIBRATING INSPECTION - ATLANTA, GEORGIA

Alfred

9 years of experience
153 reviews
Alfred
9 years of experience
He showed up right on time, and did a thorough check of my car, even the tires. It turned out to be my battery after all, and he went right out and got a replacement within 15 min. He even added a special cleaner and corrosion protection.
2001 MERCURY GRAND MARQUIS - SERVICE BATTERY/CABLES - OAKLAND, CALIFORNIA

Dominic

24 years of experience
68 reviews
Dominic
24 years of experience
was at my house within an hour after I called to book service..dominic replaced the starter in my 97 grand marquis..did a great job at an unbelievable price..very nice person..will definitely vet my mechanic to send him to my house in the future
1997 MERCURY GRAND MARQUIS - STARTER - CAPE CORAL, FLORIDA
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
1988 Mercury Grand MarquisV8-5.0LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$143.32Shop/Dealer Price$176.17 - $242.05
1992 Mercury Grand MarquisV8-4.6LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$211.56Shop/Dealer Price$261.54 - $378.65
1989 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$174.26Shop/Dealer Price$214.87 - $303.97
1984 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$70.00Shop/Dealer Price$84.56 - $95.49
1986 Mercury Grand MarquisV8-5.0LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$139.86Shop/Dealer Price$171.86 - $235.15
1979 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$70.00Shop/Dealer Price$84.52 - $95.40
1988 Mercury Grand MarquisV8-5.8LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$174.26Shop/Dealer Price$214.93 - $304.08
2000 Mercury Grand MarquisV8-4.6LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$70.00Shop/Dealer Price$84.59 - $95.52
Show example Mercury Grand Marquis Ignition Cable (Spark plug wires) Replacement prices

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