Bad plug could not spark at times, which the computer isn’t gonna “sense” the plug being fired, and trip that, the computer isn’t able to tell which it is (plug or ignition coil) I’d toss some plugs in her and run it, and see what happen, $20-$30 in plugs isn’t gonna be a bad thingI'm also assuming that bad spark plugs can damage the ignition coil, which could be a reason behind my ignition coil malfunction, correct?
I don’t have a wiring diagram, but it’s just a single plugin on the coil-on-plug pack, which should just be the energize/trigger wiring, these cars are pretty much the last of a “basic” easy to work on carOh really? Thought there was two different computer inputs for specifically spark plugs and ignition coils.
Don’t live in the salt belt then, this is the carnage from salt, these were solid 2 years agoYeah my body is in perfect condition, but I dinged the edge of my passenger door, and left it unchecked for a year, and rust began building under the paint; until just few months ago, the paint chipped off and now i have OCD over the rust.
I agree that you should always clear the code first and see if it returns. This is the benefit of having a Scangauge2 in my car. I've had a CEL come on, I scan the code and clear it without even stopping. Most every time the CEL has never come back on.3 weeks ago my Corolla misfired and almost stalled. The CEL came on with code P0353, which is an ignition coil in cylinder #3. I learned a long time ago from a pretty good mechanic that you always, always reset a CEL and see if it happens again. I reset it then and it has run smoothly since with no light. I would advise resetting the light and monitor (especially if no symptoms).
I'm lucky because I don't live in the salt belt, and never will. My 2009 Corolla is in excellent condition with zero rust. If anything ever happens I get it fixed right away by either myself or a shop if I can't do it.Yeah my body is in perfect condition, but I dinged the edge of my passenger door, and left it unchecked for a year, and rust began building under the paint; until just few months ago, the paint chipped off and now i have OCD over the rust.
I would never use Autolite plugs in a Corolla. They like Denso or NGK but others can have issues. I bought a new set of Denso Iridium plugs for $12 on eBay. Just installed them today. Always check the gap though. The OEM gap is .043 and the 4 plugs were all different gaps from .030, .032, .036 and .042. I always check the gap and rarely are they correct.Buy the coil and change the plugs and get it over with. If you are going to sell the car, just buy what you need. Autolite are good cheap plugs. Buy them pre gapped and do the next owner a favor and put a little anti seize on the threads of the plug. Get a spark plug socket that has a boot in it to keep the spark plug from falling out as you go to lower the spark plug into the valley of where it will be seated. The plug does not need to be tight. After hand tightening, get your socket and turn until snug.