answers are no where to be seen
May be that one of the cylinders is not firing. Check spark plugs for oil/any other obvious damage.
A bad exhaust will cause gas fumes to get inside the Nissan Maxima while it is idling. Gas fumes, if contained in an enclosed space, is dangerous.
A car that is stopped with the engine running.
probably the governor going bad
The idle is not adjustable.You have other problems if it's idling to fast are to slow.The throttle plates are calibrated / preset at the factory.Is the check engine light on ?? If it is, then you need to have the engine scanned with a engine scanner to check the emission system and sensors. It will also help your idling problem after you repair the problem that made the check engine light come on. If you don't find your problem in that area. then PLEASE ask your question again.
Well, a transmission itself does not idle...the engine does. A vacuum leak in the engine will cause faster idling or slower idling depending on where the leak is. Newer transmissions do not use vacuum at all for their operation. Older vehicles used vacuum to help with the shifting of gears-automatic transmissions.
possible due to Engine mounting problem or ECU is not responding properly. Pls. contact to your mechanic ASAP. Usman Ali
Have vehicle scanned to determine the problem Possibly a bad ignition coil
water in the fuel can cause an idling motor to sputter and/or die.
Have it checked for codes. There will be a misfire code that will let you know what cylinder has the problem.