well i got a check engine light about 3 months ago and after like a week it turned off..in the next 3 months i would start the car fine and drive it..after leaving it for a few hours it would barely start back up..it would take MUCHO cranking...then yesterday the check engine light came on again....this time tho, it was ALWAYS almost impossible to start..after cranking and cranking and cranking it would finally come on...it wasn't the battery because even when i tried jumping it it would do the same thing..the alternator is ok and i htink the starter is fine too since it cranks and not just click.....and if i get lucky and teh car starts it hesitates to stay on unless i give it gas...and the idle is initially really rough..anyone know what sensor this is? i heard someone mention a engine coolant sensor for this problem? i dropped it off at NISSAN...anyone know how much this sensor costs?? thanks..

Sorry to hear about your car problems.

Next time you get a check engine light,
check this out:

http://vbxmaxima.8m.com/ecu.html


May help. :)