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Does it start back up? If so do this, buy a can of engine throttle body cleaner (made by CRC products) and clean the throttle bore and blade, also clean the idle speed control air bypass valve mounted to the throttle body.
Hello. Thanks for choosing Fixya! Begin by changing the fuel filter and the air filter. If that doesn't solve your problem take your Nissan to any autoparts store or shop that can put it on a scanner to see what other issues the car has. THanks for choosing fixya! Regards, Joe
No, it should only turn on when the temperature switch tells it to. On a hot day you may hear it running even after shutting off the engine. The fan is set up so that when you are moving at enough speed the fan shuts off to save energy, when you slow down or stop the fan should come on to maintain airflow. If you check it at this point yes it should be running. When you start it cold the fan will not turn on for maybe 10 or more seconds when the engine starts to warm up. Hope this helps.
Things to be concered about; 1.) the fan never seems to turn on. This will cause your engine to overheat when you stop. 2.) Your heat is not working. The heat going away can be a sign that you antifreeze is low and that you are about to overheat.
~lopez: I had similar problems after getting my ECU replaced. later i got a letter from nissan saying it was the wrong program they flashed on the ECU (think it was a maxima ECU they flashed into my sentra) it only seemed to do it right after my car warmed up while i was slowing down (for a stop) but never cut out when i was at a complete stop.
you can call nissan to see if there are any recalls or updates for your ECU program (they should be free if there is)
if that does not work, or it cuts off while accelerating, try checking your fuel/air ratio, spark plugs, air filter, and fuel injectors. (a fuel filter can even cause cut-outs as well if it's seriously clogged, but it's usually hard to start as well)
~guest: kinda sounds like heat problems, check to make sure your temp gauge is working and see if this helps... - when it cuts out on you, turn key all the way off, then turn it back to full on (but don't crank) this should let you rad. fan run without cranking your car. if this causes the wait time to be shorter before you can crank it again (less than an hour) then it's most likely a temp gauge, water pump, hose or even a belt.