Ended up picking up a 12 gt 6spd, 56k miles, and seems to run beautifully expect I keep getting a random cylinder missfire. The specialist I brought it to has changed the coils and the injectors, as well a retuned it and even when we go driving with live data on his computer, when it missfires he says literally nothing looks wrong in the engine. He said everything ironically looks perfect. He cant seem to figure out whats causing it. Here's the funny part tho:
-It only missfires when I hold a gear (particularily 3rd gear) at 3500-3700 rmps for around 8-10 seconds...
His only thoughts could be from a clogged cat that would be overheating for whatever reason at that rpm hold or that there's a damaged valve in the engine. Anyone seen this before?
-It only missfires when I hold a gear (particularily 3rd gear) at 3500-3700 rmps for around 8-10 seconds...
His only thoughts could be from a clogged cat that would be overheating for whatever reason at that rpm hold or that there's a damaged valve in the engine. Anyone seen this before?
