started just running rough and stalling sometimes ran fuel injector cleaner through it, started smoking changed air cleaner installed new spark plugs ,it idled better but it started staling then I got maf code so I cleaned the maf sensor it still got the code so I installed a new maf sensor the it went into limp mode I un hooked the battery to reset the ecm seems to be stuck in limp mode it keeps coming up with misfire code on2 4 and6 cylinders please help

 

That is usually normal after running some sort of solvent / cleaner through PVC system (through PVC valve), throttle body, MAF sensor. I've had this occur many times after cleaning above mentioned items with Seafoam Cleaner & Lube spray. Usually the rough idle and smoke from carbon deposits (through exhaust), work itself out after driving a few miles. If CHECK ENGINE light comes on, that usually goes off after a few miles as well. If not, you may have forgotten to re-attach a vacuum hose or electrical connector.
PLEASE NOTE: Do not use Seafoam Spray Cleaner and lube on MAF sensor. Only use cleaner specified for MAF sensor. I use CRC MAF sensor spray cleaner.