My son had the spark plugs changed and after that we noticed the check engine light and track light would come on randomly and go off sometimes randomly. Sometimes they stay on until the car set up for a few days. Sometimes it is one or the other and sometimes it is both. Sometimes you had to stop and restart the car and they would stay off.

Today I noticed that if I am using the radio and I plugged anything in the cigarette lighter or if I turned the back window defogger on, the check engine light and the track light would come on and stay on and the radio would start to crackle like between stations. I took my phone cord out of the cigarette lighter and the radio went back to normal but the lights stayed on so I undid the positive battery cable and waited a few minutes and when I put it back the lights were off. (I was told this would reboot the computer)

I don't use my car every day and I may use it a few times before I see the lights again. I'm not going to rant, I just want a solution!

Although if it helps then Damn it! Hell! and Stupid Sh*t!