Diagnosing Difficulties with Your Lexus LS300-and How to Quick-Fix Them
The ignition coil on your Lexus LS300 might not play a critical long term role when it comes to your car's long term performance, but considering it actually helps get your car started to begin with, you should keep an eye out on it. You might think that it's difficult to keep track of such a tiny little part-you wouldn't be all too wrong. A lot of the times, a faulty ignition coil is the last thing on people's minds when something goes wrong under the hood. Fortunately, there are a few signs to look out for that clue you in that the ignition coil is showing signs of trouble.
Naturally, the first symptom to look out for when trying to diagnose ignition coil problems would be the most obvious: your Lexus has a tough time trying to start up. This particular symptom is normally blamed on the battery and even the spark plugs-which could well be the case-but a bad ignition coil is a far more common cause so should be the first to be checked. Use an ohmmeter to check the flow of electricity. If there is one, rest the battery before trying again. If there is no flow of electricity, you might want to check the wiring next and, failing that, get a replacement out and ready.
Less common symptoms
Misfires and backfires in the engine are also sometimes caused by a bad ignition coil. If you replace the spark plugs in your engine and still encounter these two loud symptoms, it's time to look at that ignition coil. Often, if the coil is compromised by dirt or deposits, the electrical conductance is affected and infects the rest of the engine. Sometimes a little cleaning can solve the problem. Much more difficult to tie to the ignition coil are decline in fuel economy and change in exhaust release. This is because there are so many other parts involved that can cause these last two symptoms that it's difficult to center on the coil. If, however, these last two symptoms occur together with a difficulty in starting and backfires, you finally have a very specific diagnosis that the ignition coil is at fault.