Repair And Fix it

A defective ignition coil pack can fire sporadically and generate a weak spark, producing a variety of different problems with your engines performance. The coils are extremely susceptible to heat, and can produce an irregular problem when heat has weakened the internal components. Fortunately, you can use a simple voltmeter to test the ignition coil pack on your vehicle.

Instructions

1

Put the vehicle in park and make sure the emergency brake is pulled up. Open up the hood of the vehicle. Find the coil pack located inside the engine. Disconnect the spark plugs from the spark plug wires. The spark plug wires are joined to the coil pack.

2

Disconnect the coil packs electrical connector. Utilize the wrench to take off the pack and remove it from the engine.

3

Switch on the meter. Put the ohmmeter to 20000 ohms then touch the meter leads to the coils. This will check the ignition coil pack. Compare the readings to the specs provided in your cars service manual. Determine if the readings you have are in range of the settings in the manual.

The 1995 Jeep Wrangler design makes replacing the ignition switch easy. Unlike many other vehicle models, there is no need to remove any panels or parts to access the switch. By simply adjusting the ignition to the correct spot, youll have the old switch out and replaced in about an hour. Theres no need to call a professional. This is definitely a do-it-yourself job.

Instructions

Uninstall the Old Switch

1

Detach the ground battery cable from the battery post. Use a wrench to turn the battery post clockwise. This is a black cable that is next to a minus sign on the battery post near the ignition.

2

Insert a key to the the ignition and turn it to "Off-Lock".

3

Remove the ignition switch. Unscrew the bolts on both sides of the ignition that hold it in place with a ratchet and socket.

4

Use your hand to pull the ignition switch from the actuator rod. The actuator rod is what holds the ignition switch to the base of the steering wheel.

5

Release and remove the switch completely from the steering wheel base. Unplug the black and white wires from the ignition switch. These wires run from the steering wheel base to the ignition switch.

Install the New Ignition Switch

6

Adjust the slider on the side of the new switch to "ACC."

7

Plug the black and white wires running from the steering wheel base into the new switch. Place them in the locations on the new switch that match with the places you removed them from on the old switch.

8

Slide the new switch on to the actuator rod in the steering wheel base.

9

Replace the mounting bolts on both sides of the new switch. Use the old bolts unless you have been supplied with new bolts with the new switch. Tighten the bolts in place with an adjustable wrench.

10

Insert a key into the ignition and turn it to the "ACC" mark on the steering wheel base.

11

Reconnect the battery post to the ground battery cable. Use a wrench to tighten the connection by turning it clockwise.

If your vehicle isnt starting when the engine is turning over, you may not be getting spark to the spark plugs through the ignition coil. You can check this by performing a simple test. This task is relatively easy but you will need an assistant so that you can simultaneously perform some of the necessary functions detailed in the procedure. Figuring out the cause of the problem that you are experiencing with your vehicle is half the battle.

Instructions

1

Park your vehicle on a flat surface.

2

Open your hood to access your engine compartment.

3

Pull the nearest spark plug wire off the top of the spark plug to expose the end of the wire

4

Connect the exposed end of the wire to the top of an extra spark plug. Set the spark plug against one of the metal surfaces on the engine.

5

Ask your assistant to start the vehicle. If you see a spark come from the spark plug, then there is spark coming from the ignition coil because the wire is attached to the ignition coil.

You can reset the oil and engine lights on your 2003 BMW X5 using the ignition key. Most people think you need to take your BMW to the dealership to have your car serviced and the lights reset, but you dont. Its a simple fix you can do right in your home garage. The Check Oil and Service Engine Soon lights illuminate on the vehicles instrument panel when the OBD, or on-board diagnostics, computer reads a trouble code sent from sensors positioned throughout the vehicle. Although you need to use an OBD scanner read the codes, you dont need one to reset the lights and turn them off.

Instructions

1

Sit in the drivers seat, close the door and fasten your seat belt.

2

Press the odometer button with your left thumb while simultaneously putting the key into the ignition and turning it to the "Accessory" position.

3

Keep pressing down on the odometer button until the light on the dashboard starts to flash and the word "Reset" appears.

4

Let go of the odometer button, then push it in again and hold it.

5

Let go of the button for the last time and look for five green lights to appear on the dash to let you know the system has been reset.

On the inside of every ignition coil are two groups of windings which wrap around an iron core. The primary windings have a couple hundred turns around the core, while the secondary windings have turns numbering in the thousands. When problems within an ignition coil are suspected, having information on how to check these windings can be beneficial.

Check Primary

To check the primary windings of an ignition coil, a digital ohmmeter will be needed. The ohmmeters positive and negative test leads will have to be connected to the coils positive and negative terminals. A reading of 0.4 to 2 ohms is normal while a zero reading means the coil has a short in it.

Check Secondary

To check the secondary windings, you will also need a digital ohmmeter. The ohmmeters positive test lead will need to be attached to the coils positive terminal. The ohmmeters other test lead will have to be connected to the coils high voltage output terminal. Normal readings for newer coils is around 6,000 ohms while older ones can have much higher readings.

Warning

When checking for a spark, never take off the coils high voltage wire. Not only can it harm the coil but it can give you a serious electric shock as well.