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check engine

  1. GT & SOHC
    Had a CEL on for misfire cyl 4. Replaced all 8 plugs and cyl 4 coil. Reset engine light. Been driving it a bit since then. Now in 4th gear ONLY the CEL flashes, shift to 5th and it goes away. I don’t know what the hell is going on. Weird. 2002 Mustang GT. 4.6 with SLP Long Tube Headers, Cats are...
  2. GT & SOHC
    I have a 2001 Bullitt and all of the warning lights on the right half of my gauge cluster no longer illuminate when starting the vehicle (traction control, parking brake warning, ABS, and check engine). The seat belt, battery, theft, and air bag lights on the left still illuminate on starting...
  3. Exhaust Parts
    I have a set of plug-in MIL eliminators for sale that i don't need. $30 shipped and they're yours!
  4. 5.0/5.8 Engine Tech
    It's really weird, the check engine light comes on about 1 after I fully complete my shift. Like after 2nd or 3rd, whatever. But after or around about 3000rpm's, it shuts off and then comes back on again, I have no idea what's going on. I thought o2 sensors, but when it is in neutral the check...
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