Won't start cranks over but won't start. service engine light is on. tail pipe fell off. ???
It's supposed to be on before the engine is running, and then go out after it's running. Car is only 4 years old and the tailpipe fell off? Do you think you have a rusted-out muffler? Someone needs to see why the tailpipe came apart and fell off.
You need some maintenance things checked for it not starting, things like spark plugs, air and fuel filters, all those things that keep a car running good, check for spark to see if ignition system is good, check for any stored fault codes, if it's really sick, take it to the best mechanic you can afford, that's usually not the dealer, but sometimes for some of the high tech options you have little choice but the dealerships, but maybe not likely on a Sentra-probably lot of good mechanics could diagnose it. First things to check are gas and spark, fuel pressure and ignition system.
on Nov 16, 2015