How often should the ignition coils be changed on a 2005 honda civic lx special edition? Thank you!
In ordinary use conditions, the ignition coils for your Honda should last a very long time--possibly the life of the car. It's not uncommon to see Hondas with their original coils at 125,000 or 150,000 miles--or more. New coils do put out a hotter spark than older coils, but in ordinary use, even an old coil should still be firing well within Honda specifications.
If your coils are getting fried early (meaning, a lot earlier than what I just wrote), you might want to check the voltage going to them. Too high voltage will burn them out prematurely. That, in turn, could be caused by a malfunctioning voltage regulator, and that same overly high voltage could also be burning out your bulbs and headlights prematurely, as well as possibly damaging your sound system and on-board computer.
When running, your car's electrical system should not be exceeding 14.5 volts. More than a few cars are designed to max out around 14 volts. Make sure that you check output voltage at several engine speeds, such as at idle, at 2000 rpm, at 4000 rpm. You might notice some variation depending on engine speed, but a good voltage regulator will do its best to keep output voltage consistently over 13 volts. Some Honda alternators and voltage regulators are designed to cut back on output voltage at low RPMs, i.e., when idling or just bopping around town. That would tend to give you a seemingly low reading, like a battery's own 12.6 volts; it would not give you a reading that's too high.
May 16, 2011 |
2005 Honda Civic