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I just got done testing the fuel injectors (via the screwdriver and ear test) and I also pulled each spark plug and examined them. I replaced them when this problem first occurred (early June) and so none of them should be faulty. However, each seemed to have a white-ish coating which I have heard means it is running hot. I understand that a bad mixture of fuel and air can result in this. A technician on YouTube showed how to use carburetor cleaner to check for any leaks in vacuum lines and intake. I did this (despite my fear of the whole engine igniting) and there was no change in the idle. The idle does not sound rough though it is just a little low. Maybe 700-800 RPM.
Ok, so I did go to Advance Auto and a very helpful gentleman ran my codes and told me that I had a bad Catalytic converter. I should have done more research but I went ahead bought it and put it on. After I did this, the car ran perfectly but the “service engine soon” light was still on. This all happened yesterday evening. This morning when I drove it into work, I could still tell the engine was rough. I took it back to Advance and this time a lady ran the codes and instead of saying what was wrong, she just gave me three codes. Here they are.
P0300 Random Misfire,
P1564 ASCD steering switch, and
P0031 O2 sensorI would naturally think the one contributing to the rough running engine is the P0300 random misfire. I could be wrong though. The Catalytic converter did make a HUGE difference in power and response but is still not the main issue. I’ll do some more research on these codes to see what they mean but in the meanwhile, I am not quiet sure what to do. Any advice or recommendations would be GREATLY appreciated. Thank you!
Thank you lar1996! I looked at the link and found I could take it to an auto parts store to get the codes ran. I’ll do that tomorrow afternoon and post the results I get. Again thank you both!