Cadillac Eldorado Glow Plugs Replacement at your home or office.

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Glow Plugs Replacement Service

How much does a Glow Plugs Replacement cost?

On average, the cost for a Cadillac Eldorado Glow Plugs Replacement is $115 with $10 for parts and $105 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1985 Cadillac EldoradoV8-5.7L DieselService typeGlow Plugs ReplacementEstimate$183.33Shop/Dealer Price$207.65 - $237.62
1984 Cadillac EldoradoV8-5.7L DieselService typeGlow Plugs ReplacementEstimate$132.75Shop/Dealer Price$154.42 - $186.29
Show example Cadillac Eldorado Glow Plugs Replacement prices

What is the Glow Plugs all about?

Diesel fuel is self-igniting under pressure. However, very cold temperatures can prevent ignition. This is where glow plugs come into play. Unlike spark plugs, which create an arc of electricity, glow plugs preheat the cylinder so the fuel can ignite more easily. The electrode heats up, glowing like the filament in an incandescent light bulb, and provides the necessary assistance to ignite the diesel fuel.

Keep in mind:

  • Removing glow plugs from many vehicles can be difficult and labor intensive.

How it's done:

  • The vehicle battery is disconnected
  • The defective glow plugs are removed
  • The new glow plugs are installed and wiring is connected
  • The battery is reconnected
  • The glow plug system is checked for proper operation and the vehicle is road tested for proper operation

Our recommendation:

The glow plugs will eventually fail and require replacement, though not at any specific interval. It may be necessary to replace the wiring harness, the glow plugs, and the relay that controls the glow plugs. In some vehicles, the relay actually fails more often than the glow plugs. If you suspect a problem with the glow plugs on your diesel engine, have one of our expert mechanics inspect and replace them as necessary.

What common symptoms indicate you may need to replace the Glow Plugs?

  • Hard/slow starting in cold weather
  • Not starting in cold weather (barring battery or other equipment failure)
  • More smoke than usual when starting (exhaust)
  • Misfire on a cylinder until the fuel warms up enough

How important is this service?

Glow plug replacement isn’t like replacing spark plugs, and some diesel owners can go for 100,000 miles or more without changing them. The relays fail more often than the plug, which is another reason it is very important to have the problem diagnosed by one of our expert diesel mechanics. This will ensure that you’re fixing the underlying problem, rather than just addressing symptoms, saving you time, money and headaches.

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Meet some of our expert Cadillac mechanics

Real customer reviews from Cadillac owners like you.

Excellent Rating

(122)

Rating Summary
115
2
1
1
3
115
2
1
1
3

Danny

11 years of experience
269 reviews
Danny
11 years of experience
Cadillac Eldorado V8-4.6L - Spark Plugs - Philadelphia, Pennsylvania
I am satisfied with the work Danny did on my car. He changed my spark plugs and he told me what the other repairs were that I needed. He cleaned my garage when he was finished working on my car, and he completed the job in good time.

Jose

10 years of experience
285 reviews
Jose
10 years of experience
Cadillac Eldorado V8-4.6L - Pre-purchase Car Inspection - Land O' Lakes, Florida
Very knowledgeable and pleasant to work with - a real pro

Jeffrey

27 years of experience
870 reviews
Jeffrey
27 years of experience
Cadillac Eldorado V8-4.6L - Check Windows - Charlotte, North Carolina
Jeffrey showed up as promised and did a great job, as he always has.

Keith

26 years of experience
10 reviews
Keith
26 years of experience
Cadillac Eldorado V8-4.6L - Car is overheating - Fort Myers, Florida
I would just like to say Keith is a top-notch professional. My appointment was scheduled for 8:30a. Unfortunately it's been raining throughout the night and is continuing at this moment. I figured the appt would have to be cancelled or rescheduled. Keith called me and said he would be to my home at the appointed time. I called him back and we both agreed because of the inclement weather, it would be best to come later. When Keith showed up, my car wouldn't start. He tried repeatedly to get it started. Upon further inspection he realized I needed a starter. He quickly gave me a quote for the starter. He let me know before he can go any further with his inspection the starter needs to be put in. Keith was very detailed in his explanations. When time comes to fix the starter Keith will be the mechanic I call. Thanks Keith.

Excellent Rating

(122)

Rating Summary
115
2
1
1
3
115
2
1
1
3
Number of Cadillac Eldorado services completed
1342+
services done by our mechanics
TOTAL NUMBER OF EXPERT Cadillac MECHANICS
900+
experts on our platform

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