I recently purchased a 05 T&C 3.8 with 120k on it. My gas pedal was sticking, I tore apart the TB and it had ALOT of black soot, like my chimney gets in comparison. I cleaned all of it, didn't remove the plenum.It stopped the sticky pedal. 2500 later pedal is sticky again. Took airboot off of TB looks like soot buildup again. Anyone know why this is. My dodge caravan 3.3 with 239k on it was reasonably dirty for the mileage, nothing like this turd I bought.