Recent content by milestonemotors

  1. M

    Rough idle/part load. HELPPPP

    thanks boss, I’m going to tackle the headers this week. Any recommendations for headers? Mine already have welds on them from some sort of repair from the previous owner
  2. M

    Rough idle/part load. HELPPPP

    Ahh This all makes sense. I also noticed someone has done some sort of welding repair on the headers before, I’m going to replace them altogether. Are there any headers that you recommend?
  3. M

    Rough idle/part load. HELPPPP

    Thanks for the info! I’m going to investigate the headers & change the o2 sensor.
  4. M

    Rough idle/part load. HELPPPP

    Hmm I’m not sure if it goes into open loop at wot. If so & the o2 sensor is defective that would make sense Why it’s clearing out. I’ll look into it. Thanks boss
  5. M

    Rough idle/part load. HELPPPP

    Hi Scooby, thank you for the info. I did notice some black soot around a few of the spark plug wires Indicating an exhaust leak. Do you think the high IAC is because of the exhaust leak as well? If so could you explain for me to have a better understanding of how it’s compensating? Much appreciated!
  6. M

    Rough idle/part load. HELPPPP

    Okay gentleman, I need the help of the pros. I have an 86 grand national, its running rich/rough at idle & part load. While at idle the AFR is low 10, while at part load it'll drop to 8 & 9 and begin to break up. If I hold WOT it'll clear out at be right at 12 and change. The specs are the...
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