so i am new to this forum site i have a 1991 might max with the 2.4l 5speed 4x2 i got this truck about 8 months ago and had a couple issue with it not running right but i finally put im tach in and my idle is at 2k and it doesnt stay consitent some times its at 2.5k or 1k or under my roommate thinks its the mass air flow i think it might be the ecu since it doesnt wanna start right up all the time...the head was redone supposply by the previous owner but i think they just got all part out a junk yard and my it a frankin truck

thanks for the help