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Question: How much is a coil pack for a 2004 Chevy Trailblazer?

2004 Chevrolet Trailblazer Ignition Coil – from $71.49+ | AutoZone.com.

What are the symptoms of a bad coil pack?

If your car is experiencing any of the problems listed below, you may have a faulty ignition coil on your hands:

  • Engine misfires.
  • Rough idle.
  • A decrease in car power, especially in acceleration.
  • Poor fuel economy.
  • Difficulty starting the engine.
  • Check engine light is on.
  • Exhaust backfiring.
  • Increased hydrocarbon emissions.

What happens if you drive with a bad coil pack?

It is possible to drive with a faulty Coil On Plug (COP), but not advisable. Driving with a faulty waste spark ignition system won’t be possible. Driving with a faulty coil pack can damage other components of the engine. You’ll also learn how to diagnose and replace your faulty coil.

How much does it cost to replace a coil pack?

Ignition Coil Replacement Cost – RepairPal Estimate. Labor costs are estimated between $51 and $64 while parts are priced between $168 and $218. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.

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What does a bad coil pack sound like?

Engine misfiring will be seen in a vehicle whose ignition coils have failed. Trying to start the engine of such a vehicle will result in engine misfiring that sounds like a coughing, sputtering noise. When driving at high speeds, jerking and spitting will be seen in the behavior of the vehicle.

Will a bad coil pack throw a code?

a faulty ignition coil can cause several problems for your engine: 1. check engine light comes on: the car’s computer oversees coil pack operation. if it detects a problem with an ignition coil, it will turn on the check engine light and log any related trouble codes.

What causes a coil pack to go bad?

Coils fail for a variety of reasons including heat, vibration, or issues on the secondary side of the ignition system. Worn secondary ignition components such as spark plugs or wires can cause a coil work harder, require more voltage, and therefore significantly reduce the operating life of the coil.

How long does it take to replace coil pack?

How long does it take to change an ignition coil pack? Changing the coil pack on most four-cylinder cars won’t take more than 1 hour. A larger engine may take much longer as other components may need to be removed.

How often do coil packs need to be replaced?

Many coil packs don’t require service for up to 120,000 to 150,000 miles. Also, distributors are very prone to failure if they become wet or the engine happens to be submerged under water for a few seconds. Coil packs tend to operate even when they have been thoroughly doused with water.

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What is the difference between an ignition coil and coil pack?

The ignition coil is a device which is capable of generating a high voltage pulse which goes to the spark plug. Coil pack refers to the set of coils used in the engine which do not run a distributor. A computer controls the set of coils.

Is it easy to replace a coil pack?

You can replace a failing ignition coil fairly easily at home, but remember that you’re dealing with high voltages so must disconnect your battery before you start.

Is it hard to replace ignition coil?

Ignition coil replacement can be challenging on some vehicle’s engines. Some ignition coils can be difficult to reach and require removal of the upper plenum/intake manifold. In these cases, a new plenum gasket will be needed. Check the Repair Guide for your specific vehicle and engine.

Can a bad coil pack cause transmission problems?

It’s possible that a bad coil in itself could cause the car to jerk when shifting into gear, but any misfire bad enough to cause this kind of jerking will probably manifest as a noticeable engine shaking under other conditions as well.

How do I know if my ignition coil or spark plug is bad?

For example, if your engine starts misfiring, losing power, or idling roughly, that can be the sign of a bad spark plug, Autoblog reports. But those signs could also point to a faulty ignition coil. A check engine light can also point to either, as can difficulty starting the engine.

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