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Cadillac Seville Ignition Coil

23 items

Replace a weak ignition coil before misfires, rough starts, or poor acceleration turn into bigger engine trouble. Find coils for everyday repair and maintenance.

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2 pc Ignition Coil | 7-Blade Terminal | A-Premium APIC00752 pc Ignition Coil | 7-Blade Terminal | A-Premium APIC0075
A-Premium®Part # APIC0075
2 pc Ignition Coil | 7-Blade Terminal | A-Premium APIC0075
4.6563 Reviews
$172.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2004 - 2006 Cadillac XLR, 2004 - 2006 Cadillac SRX, 2004 - 2004 Cadillac Seville, 2004 - 2005 Cadillac DeVille, 2005 - 2006 Cadillac STS, 2004 - 2005 Pontiac Bonneville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity2
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #1002Q6H3
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1 pc Ignition Coil | 7-Blade Terminal | A-Premium APIC0074
A-Premium®Part # APIC0074
1 pc Ignition Coil | 7-Blade Terminal | A-Premium APIC0074
4.6563 Reviews
$101.99
Low stock: Only 3 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2004 - 2006 Cadillac XLR, 2004 - 2006 Cadillac SRX, 2004 - 2004 Cadillac Seville, 2004 - 2005 Cadillac DeVille, 2005 - 2006 Cadillac STS, 2004 - 2005 Pontiac Bonneville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #1002QZKX
Show less
3 pc Ignition Coil | 6-Pin Terminal | A-Premium APIC0099
A-Premium®Part # APIC0099
3 pc Ignition Coil | 6-Pin Terminal | A-Premium APIC0099
4.6563 Reviews
$35.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2006 - 2008 Buick Allure, 1986 - 2005 Buick Century, 1986 - 1990 Buick Electra, 2005 - 2009 Buick LaCrosse, 1986 - 2005 Buick LeSabre, 2006 - 2008 Buick Lucerne, 1991 - 2005 Buick Park Avenue, 1990 - 1991 Buick Reatta, 1988 - 2003 Buick Regal, 2002 - 2003 Buick Rendezvous, 1986 - 1999 Buick Riviera, 1987 - 1989 Buick Skyhawk, 1987 - 1997 Buick Skylark, 1987 - 1987 Buick Somerset, 1993 - 1993 Cadillac Allante, 1987 - 1988 Cadillac Cimarron, 1996 - 1999 Cadillac DeVille, 1994 - 1999 Cadillac Eldorado, 1993 - 1999 Cadillac Seville, 1987 - 1996 Chevrolet Beretta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity3
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #1002PHAP
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Walker Products 921-2224 Ignition Coil
Walker ProductsPart # 921-2224
Walker Products 921-2224 Ignition Coil
4.328 Reviews
$214.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2004-2004 Cadillac Seville, 2004-2005 Cadillac DeVille, 2004-2005 Cadillac XLR, 2004-2006 Cadillac SRX, 2005-2006 Cadillac STS, 2004-2005 Pontiac Bonneville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
921-2224, 50152, 368203, 36-8203, C1509, IC502, GN10419, UF372, 
...View more
item #1001L5XG
Show less
Spectra Premium C-614 Ignition Coil
Spectra PremiumPart # C-614
Spectra Premium C-614 Ignition Coil
52 Reviews
$30.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1980-1981 American Motors Concord, 1980-1981 American Motors Spirit, 1981-1981 American Motors Eagle, 1980-1980 Avanti II, 1977-1977 Buick Regal, 1977-1977 Buick Skylark, 1977-1977 Buick Skylark, 1977-1979 Buick Century, 1977-1979 Buick Skylark, 1977-1980 Buick Regal, 1977-1981 Buick Century, 1978-1979 Buick Electra, 1978-1979 Buick Skylark, 1980-1980 Buick Skylark, 1981-1981 Buick Century, 1981-1981 Buick Skylark, 1981-1982 Buick Regal, 1981-1982 Buick Skylark, 1982-1982 Buick LeSabre, 1982-1982 Buick LeSabre
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
C-614, CDR31, U1106, U1175, J8131936, 8131936, DR31T, DR31X, 
...View more
item #1000Z5YU
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Spectra Premium C-838 Ignition Coil
Spectra PremiumPart # C-838
Spectra Premium C-838 Ignition Coil
52 Reviews
$56.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2006-2006 Buick Lucerne, 2004-2004 Cadillac Seville, 2004-2005 Cadillac DeVille, 2004-2006 Cadillac SRX, 2004-2006 Cadillac XLR, 2005-2006 Cadillac STS, 2006-2006 Cadillac DTS, 2006-2006 Cadillac STS, 2004-2005 Pontiac Bonneville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
C-838, CUF564, U5185, 368201, 521854, UF564, D596A, 191136, 
...View more
item #1000Z2KQ
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Spectra Premium C-503 Ignition Coil
Spectra PremiumPart # C-503
Spectra Premium C-503 Ignition Coil
52 Reviews
$31.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1986-1986 Buick LeSabre, 1986-1987 Buick Electra, 1986-1987 Buick Riviera, 1986-1988 Buick Century, 1986-1990 Buick LeSabre, 1987-1987 Buick Somerset, 1987-1988 Buick Century, 1987-1989 Buick Skyhawk, 1987-1991 Buick Skylark, 1987-2005 Buick Century, 1988-2004 Buick Regal, 1989-1993 Buick Skylark, 1990-1990 Buick Electra, 1990-1990 Buick Reatta, 1991-1991 Buick Reatta, 1991-1992 Buick LeSabre, 1991-1992 Buick Park Avenue, 1991-1993 Buick Riviera, 1993-2005 Buick LeSabre, 1993-2005 Buick Park Avenue
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
C-503, CDR39, CUF76, DR39T, DR39, 8104683910, 8104724010, D555, 
...View more
item #1000Z4X6
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Walker Products 920-1005 Ignition Coil
Walker ProductsPart # 920-1005
Walker Products 920-1005 Ignition Coil
4.328 Reviews
$34.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1986-1987 Buick Electra, 1986-1987 Buick Riviera, 1986-1988 Buick Century, 1986-1990 Buick LeSabre, 1987-1987 Buick Somerset, 1987-1988 Buick Century, 1987-1989 Buick Skyhawk, 1987-1991 Buick Skylark, 1987-1992 Buick Century, 1988-2004 Buick Regal, 1989-1989 Buick Century, 1989-1993 Buick Century, 1989-1993 Buick Skylark, 1990-1990 Buick Electra, 1990-1990 Buick Reatta, 1991-1991 Buick Reatta, 1991-1992 Buick LeSabre, 1991-1992 Buick Park Avenue, 1991-1993 Buick Riviera, 1993-1993 Buick Century
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
920-1005, D-540, IC-30, DC-63, 10468391, 10472401, 10477602, 10482928, 
...View more
item #1001L1VK
Show less
Spectra Premium C-836 Ignition Coil
Spectra PremiumPart # C-836
Spectra Premium C-836 Ignition Coil
52 Reviews
$194.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2004-2004 Cadillac Seville, 2004-2005 Cadillac DeVille, 2004-2006 Cadillac SRX, 2004-2006 Cadillac XLR, 2005-2006 Cadillac STS, 2006-2006 Cadillac STS, 2004-2005 Pontiac Bonneville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
QuantityOne Set
Item LocatedUnited States
Part interchange
C-836, CUF372, U6045, 521817, UF372, D593A, GN10419, 3312467757248997, 
...View more
item #1000Z5Y1
Show less
Walker Products 920-1037 Ignition Coil
Walker ProductsPart # 920-1037
Walker Products 920-1037 Ignition Coil
4.328 Reviews
$34.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1974-1974 Buick Apollo, 1974-1974 Buick Century, 1974-1974 Buick Century, 1974-1974 Buick Century, 1974-1974 Buick Electra, 1974-1974 Buick Estate Wagon, 1974-1974 Buick LeSabre, 1974-1974 Buick LeSabre, 1974-1974 Buick LeSabre, 1974-1974 Buick Regal, 1974-1974 Buick Regal, 1974-1974 Buick Riviera, 1975-1975 Buick Apollo, 1975-1975 Buick Apollo, 1975-1975 Buick Electra, 1975-1976 Buick Century, 1975-1976 Buick Regal, 1975-1976 Buick Skylark, 1975-1979 Buick Estate Wagon, 1975-1980 Buick LeSabre
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
920-1037, 5194, D-524, D-531, IC-18, GN10190, DC-57HS, 1876209, 
...View more
item #1001L1Z6
Show less
1 pc Ignition Coil | 2-Pin Terminal | Aisin ESCAZ-00095
AisinPart # ESCAZ-00095
1 pc Ignition Coil | 2-Pin Terminal | Aisin ESCAZ-00095
4.6563 Reviews
$26.99
Low stock: Only 3 left
Edit ZIP code
3-year warranty
90 days free return
Fits 1987 - 1989 Corsica Corsica, 1987 - 1988 Cimarron Cimarron, 1990 - 2004 Regal Regal, 1994 - 2003 S10 S10, 2005 - 2009 LaCrosse LaCrosse, 1987 - 1987 Somerset Somerset, 1995 - 1997 Monte Carlo Monte Carlo, 1986 - 1986 LeSabre LeSabre, 1989 - 2005 Century Century, 1989 - 1993 Century Century, 2006 - 2008 Lucerne Lucerne, 1987 - 1989 Beretta Beretta, 1998 - 2005 Monte Carlo Monte Carlo, 1993 - 1999 Eldorado Eldorado, 1992 - 1992 Century Century, 1991 - 1996 Cutlass Supreme Cutlass Supreme, 1989 - 1993 Skylark Skylark, 1986 - 2005 LeSabre LeSabre, 1988 - 1990 Cutlass Cruiser Cutlass Cruiser, 1993 - 1999 Seville Seville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
10467067, 10468391, 10470600, 10472401, 10477602, 10482928, 10495121, 10497771, 
...View more
ConditionNew
item #10186HQ5
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Walker Products 921-2144 Ignition Coil, Left Driver Side
Walker ProductsPart # 921-2144
Walker Products 921-2144 Ignition Coil, Left Driver Side
4.328 Reviews
$198.99
Low stock: Only 3 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2000-2002 Cadillac Eldorado, 2000-2003 Cadillac DeVille, 2000-2003 Cadillac Seville, 2001-2002 Oldsmobile Aurora, 2003-2003 Oldsmobile Aurora
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Installation PositionLeft
Part interchange
921-2144, C1246, COP-39, GN10110, UF266, UF266T, E249, 1104076, 
...View more
item #1001L141
Show less
1 pc Ignition Coil | Aisin ESCGM-00140
AisinPart # ESCGM-00140
1 pc Ignition Coil | Aisin ESCGM-00140
4.6563 Reviews
$145.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2004 - 2005 Cadillac DeVille, 2004 - 2004 Cadillac Seville, 2004 - 2006 Cadillac SRX, 2005 - 2006 Cadillac STS, 2004 - 2006 Cadillac XLR, 2004 - 2005 Pontiac Bonneville, 2004 - 2005 Cadillac DeVille, 2004 - 2004 Cadillac Seville, 2004 - 2004 Cadillac SRX, 2004 - 2006 Cadillac SRX, 2006 - 2006 Cadillac STS, 2005 - 2006 Cadillac STS, 2006 - 2006 Cadillac XLR, 2004 - 2006 Cadillac XLR, 2004 - 2005 Pontiac Bonneville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
12567285, 12585765, 89017778
ConditionNew
item #1018EALC
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Walker Products 921-2145 Ignition Coil, Right Passenger Side
Walker ProductsPart # 921-2145
Walker Products 921-2145 Ignition Coil, Right Passenger Side
4.328 Reviews
$165.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2000-2002 Cadillac Eldorado, 2000-2003 Cadillac DeVille, 2000-2003 Cadillac Seville, 2001-2002 Oldsmobile Aurora, 2003-2003 Oldsmobile Aurora
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Installation PositionRight
Part interchange
921-2145, 2IGC0099, 36-8256, C1245, COP-38, GN10109, UF265, E248, 
...View more
item #1001L3LK
Show less
Walker Products 920-1003 Ignition Coil
Walker ProductsPart # 920-1003
Walker Products 920-1003 Ignition Coil
4.328 Reviews
$32.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1980-1981 American Motors Concord, 1980-1981 American Motors Spirit, 1981-1981 American Motors Eagle, 1977-1977 Buick Regal, 1977-1977 Buick Skylark, 1977-1977 Buick Skylark, 1977-1979 Buick Skylark, 1977-1980 Buick Regal, 1977-1981 Buick Century, 1978-1979 Buick Century, 1978-1979 Buick Electra, 1978-1979 Buick Skylark, 1980-1980 Buick Skylark, 1981-1981 Buick Century, 1981-1981 Buick Skylark, 1981-1982 Buick Regal, 1981-1982 Buick Skylark, 1982-1982 Buick LeSabre, 1982-1982 Buick LeSabre, 1982-1987 Buick Regal
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
920-1003, 5193, IC-19, D-523, D-530, GN10189, DC-55HS, 1875894, 
...View more
item #1001L38W
Show less
Beck/Arnley 178-8206 Ignition Coil
Beck/ArnleyPart # 178-8206
Beck/Arnley 178-8206 Ignition Coil
4.434 Reviews
$58.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1986-1988 Buick Century, 1986-1989 Buick Electra, 1986-1990 Buick LeSabre, 1986-1993 Buick Riviera, 1987-1987 Buick Somerset, 1987-1989 Buick Skyhawk, 1987-1991 Buick Skylark, 1988-2004 Buick Regal, 1989-1993 Buick Century, 1990-1990 Buick Electra, 1990-1991 Buick Reatta, 1991-2005 Buick LeSabre, 1991-2005 Buick Park Avenue, 1992-1993 Buick Skylark, 1994-1996 Buick Century, 1994-1998 Buick Skylark, 1995-1999 Buick Riviera, 1997-2005 Buick Century, 2002-2003 Buick Rendezvous, 2004-2005 Buick Rendezvous
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
178-8206
item #1000X287
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Delphi GN10109 Ignition Coil, Right Passenger Side
DelphiPart # GN10109
Delphi GN10109 Ignition Coil, Right Passenger Side
51 Reviews
$233.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2000-2002 Cadillac Eldorado, 2000-2003 Cadillac DeVille, 2000-2003 Cadillac Seville, 2001-2002 Oldsmobile Aurora, 2003-2003 Oldsmobile Aurora
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Installation PositionRight
item #1001VSQG
Note
PV8 Fully Integrated System has 4 Coils and 1 Module. Cassette color is Black
Show less
Delphi GN10110 Ignition Coil, Left Driver Side
DelphiPart # GN10110
Delphi GN10110 Ignition Coil, Left Driver Side
51 Reviews
$248.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2000-2002 Cadillac Eldorado, 2000-2003 Cadillac DeVille, 2000-2003 Cadillac Seville, 2001-2002 Oldsmobile Aurora, 2003-2003 Oldsmobile Aurora
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Installation PositionLeft
item #1001VSK0
Note
PV8 Fully Integrated System has 4 Coils and 1 Module. Cassette color is Grey
Show less
Delphi GN10419 Ignition Coil
DelphiPart # GN10419
Delphi GN10419 Ignition Coil
51 Reviews
$221.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2004-2004 Cadillac Seville, 2004-2005 Cadillac DeVille, 2004-2005 Cadillac XLR, 2004-2006 Cadillac SRX, 2005-2006 Cadillac STS, 2004-2005 Pontiac Bonneville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
GN10419, 5C1552, C1509, D593A, E402, CLS1183, 36-8203, 89017778, 
...View more
item #1001W5DR
Show less
Ignition Coil - Delphi GN10190
DelphiPart # GN10190
Ignition Coil - Delphi GN10190
51 Reviews
$45.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1985-1985 Buick Century, 1985-1985 Buick Century, 1985-1985 Buick Electra, 1985-1985 Buick Electra, 1985-1985 Buick LeSabre, 1985-1985 Buick Regal, 1985-1985 Buick Riviera, 1985-1989 Buick Electra, 1985-1990 Buick LeSabre, 1986-1987 Buick Regal, 1986-1986 Cadillac Fleetwood, 1986-1992 Cadillac Eldorado, 1986-1992 Cadillac Seville, 1987-1989 Cadillac Brougham, 1987-1992 Cadillac Allante, 1990-1990 Cadillac Brougham, 1991-1991 Cadillac Commercial Chassis, 1991-1992 Cadillac Fleetwood, 1991-1993 Cadillac DeVille, 1992-1993 Cadillac Commercial Chassis
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac Seville
Quantity1
Item LocatedUnited States
Part interchange
GN10190, 5C1060, C833, D505A, CLS1133, 920-1037, 7B8, 12498336, 
...View more
item #1001VXND
Note
3 Wire Connectors
Black has Ring Terminal
Red & White have U shape Terminals
Show less
Page 1 of 2

Premium Automotive Ignition Coils | Restore Engine Power & Fuel Efficiency

Are you experiencing rough idling, engine misfires, or a sudden drop in fuel economy? It might be time for an ignition coil replacement. As a heart of your vehicle's ignition system, a reliable automotive ignition coil transforms your battery's low voltage into the thousands of volts required to create an electric spark in the spark plugs, keeping your engine running smoothly.

At A-Premium, we provide OE-matching car ignition coil solutions designed to eliminate misfires, restore lost horsepower, and ensure reliable cold starts in any weather condition.

Anatomy of an A-Premium engine ignition coil

Anatomy of an A-Premium Engine Ignition Coil

To understand what makes a high-performance engine ignition coil, let’s look inside its core engineering:

  1. Integrated Driving Circuit: Features a compact, smart-integrated electronic chip at the top of the coil to ensure precise ignition timing and robust thermal resistance.
  2. Superior Quality Components & Materials: Wrapped with high-grade copper wire and premium epoxy resin insulation to prevent voltage leaks and withstand extreme under-hood heat.
  3. Rigorously Tested & Inspected: 100% factory stress-tested against thermal shock and vibration to guarantee long-lasting durability.
  4. Diagonal Windings Technology: Eliminates heavy, sectioned bobbins through advanced space-saving diagonal winding, significantly reducing the overall size and weight while maximizing energy output.

Our Advantages: Built for Real-World Driving Scenarios

Our automotive ignition coil lineup is engineered to solve everyday driving pains:

  • The Daily Commute (Stop-and-Go Traffic): Misfires often happen when idling at red lights. Our coils deliver stable, continuous voltage output, eliminating rough idles and ensuring seamless acceleration.
  • Extreme Weather Performance: Cheap coils crack under freezing winter temperatures or intense summer engine heat. Our high-dielectric epoxy coatings prevent micro-cracks, ensuring your engine fires up instantly on the first crank.
  • Fuel & Emission Savings: A weak spark leads to unburnt fuel. Upgrading your worn car ignition coil ensures complete combustion, optimizing your MPG and helping you pass emissions tests effortlessly.

Smart Buyer’s Guide: How to Choose the Best Ignition Coil

Navigating the market for an engine ignition coil can be confusing. Here is what smart buyers look for to get the perfect match:

1. Matching by Vehicle Make & Fitment (The #1 Priority)

Ignition systems are highly sensitive. A generic coil will cause error codes. Most users search and filter by their vehicle’s specific Year, Make, and Model, such as Ford EcoBoost, Honda VTEC, or Toyota VVT-i systems. Always use our fitment selector at the top of the page to find the exact OEM specification for your car.

2. When to Buy an Ignition Coil & Spark Plug Kit? (The Smart Money Move)

Should you buy them together? 90% of mechanics recommend it.

  • The Reason: A worn, old spark plug has a wider gap, which forces the engine ignition coil to work twice as hard to bridge that gap. This extra workload overheats the coil and burns it out prematurely.
  • The Strategy: If your vehicle has crossed 80,000 miles and you are doing an ignition coil replacement, always buy a complete coil and spark plug kit. It saves you from tearing down the engine twice and protects your new investment.

Replacement Checklist: When to Replace vs. When to Keep

Not every engine hiccup requires a new coil. Use this quick checklist to decide your next move:

Time to Replace if:

  • You have a confirmed OBD-II trouble code between P0300 to P0308, indicating a specific cylinder misfire.
  • The plastic housing of the coil shows visible hairline cracks, melting, or burning.
  • Your vehicle has passed 100,000 miles, as ignition coils are wear items and generally degrade after this milestone.

Do NOT Replace Yet if:

  • Your car won't crank at all. This is usually a dead battery or starter motor issue, not the ignition coil.
  • You have a misfire code but haven't checked for oil leaks. Often, a leaking valve cover gasket floods the spark plug well with oil, causing a short circuit. Simply cleaning the oil and replacing the gasket might fix the issue without needing a new coil.

Frequently Asked Questions (FAQ)

Can I replace just one faulty ignition coil, or should I replace them all at once?

If your vehicle has low mileage, replacing just the single failed car ignition coil is perfectly fine. However, if your car has over 80,000 miles, all the coils have experienced the same amount of heat and stress. When one fails, the others are usually close behind. Replacing the whole set at once ensures consistent engine balance and saves on future labor costs.

What are the most common symptoms of a failing engine ignition coil?

The most prominent signs include a flashing Check Engine Light, sudden engine shaking, especially at idle or under load, poor fuel economy, backfiring, and a noticeable hesitation or jerking when you step on the gas pedal.

How long does a typical automotive ignition coil last?

High-quality OEM-grade ignition coils are built to last between 80,000 to 100,000 miles. However, exposure to excessive engine vibration, oil leaks from a failing valve cover gasket, or neglected, worn-out spark plugs can drastically shorten their lifespan.

Will changing my ignition coils improve my gas mileage?

Yes. If your current coils are weak or failing, they create incomplete combustion in the cylinders, meaning your engine is literally throwing away unburnt fuel through the exhaust. Performing an ignition coil replacement restores 100% combustion efficiency, bringing your fuel economy back to factory-fresh levels.

Is it safe to drive with a misfiring ignition coil?

No, you should avoid it. Driving with a failed ignition coil means unburnt raw fuel is entering your exhaust system. This fuel will quickly ignite inside your catalytic converter, overheating it and melting its internal structure. A catalytic converter replacement is significantly more expensive than a simple ignition coil swap.

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P0302 Code: How to Diagnose and Fix a Cylinder 2 Misfire

The P0302 diagnostic trouble code indicates a misfire condition in cylinder 2 of the engine. Specifically, the P0302 code is triggered when the engine control module (ECM) detects that cylinder 2 is not firing properly or is experiencing a misfire.

Jul 30, 2026

What Happens When an Ignition Coil Goes Bad?

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How To Check Ignition Coil with A Multimeter?

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How Small Engine Ignition Coil Can Be Tested with A Multimeter?

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