Please fill out the following to ask a question. MAKE:Nissan MODEL:Altima YEAR:05 MILES:205300 ENGINE:2.5S DESCRIBE ISSUE.... idle runs high, I done a smoke check for vacuum leaks, fixed. I have changed the spark plugs, ignition coil packs, crankshaft position sensor, MAF sensor, intake gaskets, valve cover gasket, pcv valve, throttle body gasket, new throttle body and did the relearn procedure about 20x. Did a compression test, everything good there, also a block test for a bad head gasket, that's good no leaks. I'm running out of options, I think my MAF sensor might be bad. I'm not sure what to do next and or check. Your guidance would be much appreciated. Thank you.