Nissan Repair: nissan repair 2000 altima, mass airflow sensor, nissan altima

Question
thanks again Von,
                My nissan has a history, service light on and rough idle. Troubleshooting the 2000 nissan has been an experiece. At this time the nissan idled good and ran good, after cool down it started to idle a bit rough with a twist, no service light.Following items have been replaced- dist,cap,rotor,wires,plugs,idle air valve,air filter.

nissan altima 2000 4 cyl auto, 68,000 original miles.  

Answer
Ruben,

Check the mass airflow sensor as these are a problem for your car and they do not show up on the codes.  But, they do go out often.  If you live where it rains a lot or if you wash the engine it takes out the mass airflow sensor.  Get a Haynes manual and it describes the test procedure for the mass airflow sensor.  Email me back if you need more.