i got a 96 mustang gt 4.6l flows and a o/r h pipe ok (no MIL's on the h pipe) ok last week my battery voltage has been moving from the R to the M and a lil past the M on the battery gauge when im stop at a light or when i put in drive or park or any of the gears, the car was running great no problems well i got got home lift the hood i turned the car off first, made sure all my wires were on the coil packs push them to see if they were on there every thing looked fine to me well the next day i went to start it up the it was RUNNING ROUGH idleing. the mustang sound it like it was kinda misfiring you can say it was acting the way if you took one of the wires off the coil pack if you what i mean i have done it before and pluged them back in and it ran fine in the past, i was like skip it i have to be some where right now well it was kinda soundit like it was boging down like ran out of gas you can say well i pushed the gas pedel then it got up and went down the road i got home called some one to see if they new whats the problem they said they dont know well i took it down to the the garage tuesday of this week they said that they tryed to put it on the gun and they came up with it the o2 sensors were not pluged in i said no shit i know that they couldnt get pass the check engine light with the o2's not hooked up and he said the belt tensioner bracket needed to be tightin up and the alternator was making a funny nosie he checked it said its going bad so this is my questions A:do i need to change my spark pulgs and wires? B:is the alternator making this problem? or C: have you seen this happen and can you help me out with this please?