I have a 94 LS with 87000 miles on it. About two days ago it started stalling at high rpms. For example I got onto the freeway making my way to 75mph and around 5000 rpms it just died. I let it sit for a few minutes and it fired right up. The check engine light hasnt come on either. It has done it three times now but only at high rpms/speeds. When I drive it around town it runs like a champ. If anyone has any ideas please let me know.