I have an 01 Nissan Sentra. Its runs great. However I went out to go to the store and the car would not start. It turned over then turned off one time. After that, it keeps acting like it wants to start but never does. Battery is good. It has gas. It isn't the starter, nor the ignition switch, nor the fuel pump or alternator. It's not getting fire/spark. We have changed spark plugs and distributor cap. We have even changed the crankshaft positioning sensor, its still not getting spark... please help!! Single mom here!

SOURCE: 1999 Yukon cold start problems.

1999 Yukon Start Issue - I have replaced the octopuse, battery, fuel filter, fuel pump, still having problems starting in cold weather, sometimes after a heavy rain.

Any suggestions?

Thanks

SOURCE: i have a jeep grand cherokee laredo with the 4.0L

It is most probably the crancase ventilator gizmo. Go to the Jeep dealer or other reputable mechanic to repair. I did and it cured the problem. It cost me about $120 and it was well worth it.

SOURCE: 2004 nissan sentra starts the stops. acts like

check your ecm connection

SOURCE: Shakes while idling and sometimes stalls.

check for minor vacuum leak and map sensor,pcv,egr valve

SOURCE: Car will not start.Engine turns over but spark plugs willnot fire

I would say replace ignition coil, that might me the problem, otherwise it can be the ecu, which might have some electrical problems not allowing the car to stay running. Good luck.