Hey guys I'm having an issue shifting my manual 2005 mustang
V6 (90,000 miles) anywhere over 3000 rpm. Under that it shifts perfect, but per that and it's like it just hits a wall, there is no grinding, it's just like there's a gate blocking my syncros from engaging each other or maybe my shifter and tranny are out of alignment at that rpm? It will shift once the rpms go down though, but that means waiting like 3 seconds between shifts which nullifies the initial reason for gassing it in the first place.
I did all of the clutch tests, and the clutch seems fine.
Any ideas what might cause this?
I was thinking a bad tranny crossmember might cause the mis-alignment, but its just a guess so I figured I'd come ask you guys, since you've all been very helpful in the past.