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Very hard.
you have to replace your spark plug wires there is a coil on each wire for each cylinder.
bad coil pack... replace coil pack
erwferferfer
Replace the coil.
you have to buy a whole distributor. coil is not sold by itself
at the top of the engine where you will see 3 packs.. each contain ignition coils to spark each cylinder ..easy to replace.. go on eaby to purchase.
no 4 cylinder not firing 1999 for explorer vidsio
Swap the suspected coil with another cylinder that is firing correctly. If the original cylinder that was missing now runs fine and the other cylinder is now missing, you have determined the suspected coil is bad. Replace it with a new one.
If the reason you want to check the coils is because of a check engine misfire code swap the coil with a coil from another cylinder, clear the codes, drive if the check engine light comes back on see if the code follows the coil you moved. If so replace the coil.
how much would it cost to replace the heater coil on a 1999 buick leSabre
Four cylinder, it is on top of the valve cover. Six cylinder, it is inside the distributor.