general_annoyance
New member
Hey all, I feel like this topic has been beaten to death, but I figured I'd post another thread to make sure I'm not needlessly spending money. I have a 2010 SHO with around 98k on the clock (owned since ~60k). Recently I've noticed a problem where it'll sometimes shudder and fluctuate RPMs under certain circumstances, mainly when trying to accelerate on the highway. Before it downshifts, it'll shudder real bad and the RPMs will bounce around a little. It feels a lot like a misfire from another car that had coilpack issues, but there's no CEL.
It seemed to go away for the most part, but then I got the power pack from Torrie at Unleashed. I applied the tune, spark plugs, and thermostat and the problem has come back worse than ever.
Today I drained about an ounce of oil-ly goop from the intercooler, but that didn't seem to help anything. I've monitored torque converter desired slip vs actual slip with Forscan, but there doesn't seem to be any deviation that correlates with the shudder. At this point, I'm leaning towards the PTU. I haven't had a chance to have someone check the TSB out on it yet.
Like I said, I'm thinking it's the PTU but I thought I'd get some second opinions before I start spending money needlessly.
It seemed to go away for the most part, but then I got the power pack from Torrie at Unleashed. I applied the tune, spark plugs, and thermostat and the problem has come back worse than ever.
Today I drained about an ounce of oil-ly goop from the intercooler, but that didn't seem to help anything. I've monitored torque converter desired slip vs actual slip with Forscan, but there doesn't seem to be any deviation that correlates with the shudder. At this point, I'm leaning towards the PTU. I haven't had a chance to have someone check the TSB out on it yet.
Like I said, I'm thinking it's the PTU but I thought I'd get some second opinions before I start spending money needlessly.