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  1. V6 Tech
    Hey guys, I bought a 98 3.8l 5 speed mustang a few months ago. 60k miles, previous owner did an okay job keeping it up to date on maintenance. Recently it’s begun idling rough. It has worsened lately, and sometimes will sputter out when turning over, and I’ve also noticed decreased performance...
  2. New Member Introductions
    Hello, I have a 98 Mustang. I ran a live diagnostic while driving about 55 mph. My question is that my O2 sensors are not reading the same. This is 1 Frame of my run diagnostic. O2S11 (V) 1.275 ST FTRM11(%) 99.2% O2S21 (V) .130 ST FTRM21 (%) -87.5% O2S11/ST FTRM11 Stay constant through all run...
  3. 5.0L Tech
    so, i kknow i am about to beat a dead horse into oblivion.... but here goes.... 89 GT with the mods you see below. car runs great 99.9% of the time. however, when you are coming to a stop, if you clutch it above 1500 RPMS, it will start to idle surge (700 to 1900 and back)... it will get...
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