Coil keeps failing.....

Could anyone shed some light on why my coil keeps going kaput.

its my 2nd one now and this only lasted a month.

cheers guys

mark

check the voltage from the alternator

sounds like it may be throwing out a lot more than it should. continued over-voltage will screw the coil.

it should read 13.4-14v at fast idle. you'll prob see about 15-16v.

need a new regulator assembly for the alternator.

Jon.

What car do you have ? Ballast resistor in small engine models runs the coil at 9 volts if this fails so will your coil .

Oh thanks guys ….. its an 83 …  1.3 driver

where would the ballast resistor be ???

thanks mark

In the wiring loom or a seperate block near the coil . Are you running a 12volt non ballast coil ?

My driver has a resistor wire, rather than a separate ballast resistor. Try putting a resistor from a different car in the positive feed to the coil. Voltage needs to dropped to about 8 or 9 V.

why not measure the voltage first whilst the car is running. confirm how much juice it's getting before taking the wiring appart.

you will get full 12-13v during cranking.

TT

Dont go anywhere near a coil when cranking or you risk death,  8O

Just insert key and select the acc position, that is all you need to check the voltage.

Change it to a new one,, try these few steps :

Open and lift the hood of the car, and locate the coil pack. Chances are that the coil pack is located at the top area, just above the engine. The coil pack is kind of like a box shape type of part with, if its a four cylinder drive car, four tubes (two tubes connected on each side). If the car has six cylinders, then there should be six tubes, eight cylinders then there should be eight tubes.

The next part is to remove the coil pack. The coil pack will be bolted down with bolt screws, and with removing them, all you need is a socket wrench to unscrew the bolts out. Usually there will be four bolts, and each one will be in the corner of the coil pack.

On the side of the coil pack is a connecting wire. Disconnect the wire from the coil pack by (sometimes if it has it, unsnapping the safety snap first, then) unplugging the wire from the coil pack.

If its the coil pack that needs to be replaced and not the tubes, then unplug the tubes from the coil pack and skip STEP 5. In the picture, the tubes (two on each side) are a light grey, they are the ones that are needed to be pulled off from the sides of the coil pack. Then take out the coil pack. You can leave the tubes still connected to the spark plugs, in the cylinders.

If the tubes connected to the coil pack needed to be replaced, then just simply pull out the tubes, with a little force, from where the spark plugs are inserted, the cylinders. Insert the new tubes into the spark pugs, in the cylinders.

If the tubes connected to the coil pack needed to be replaced, then just simply pull out the tubes, with a little force, from where the spark plugs are inserted, the cylinders. Insert the new tubes into the spark pugs, in the cylinders.

Place the new coil pack in by connecting the wire on the side first to make sure the wire plug fits in to the coil pack.

After connecting the wire, place the coil pack into the right spot to bolt down. Using the socket wrench again, bolt down the bolt screws until all four sides are in place.

Next is to connect the tubes to the coil pack, two on each side, and then you are all done. Turn on the car to see if its running, and if it is, you'll notice the sound of the engine is much smoother than before, and let it run for a couple of minutes and check to see if the check engine light will turn on, if it doesn't, then its good.

homer5 said

Change it to a new one,, try these few steps :

Open and lift the hood of the car, and locate the coil pack. Chances are that the coil pack is located at the top area, just above the engine. The coil pack is kind of like a box shape type of part with, if its a four cylinder drive car, four tubes (two tubes connected on each side). If the car has six cylinders, then there should be six tubes, eight cylinders then there should be eight tubes.

The next part is to remove the coil pack. The coil pack will be bolted down with bolt screws, and with removing them, all you need is a socket wrench to unscrew the bolts out. Blah Blah

Cutting and pasting information about an American car (hood :wink: ) running a coil pack isn't a lot of use really.