idling 2000 nissan sentra
I had a problem with my Nissan Sentra thumping, had advance auto parts run a car sensor for free on my car, said cylinder 4 was miss firing, replaced my spark plugs, car did a bit better but not a lot. So I then replaced the coil on cylinder 4 and it ran a lot better, it stopped thumping and gained a lot of it's horse power back. It is now idling out though when i start my car, once i get it running a bit it keeps running but getting it going sucks. I'm not sure what to do next.