So now i'm thinking it may not be just a problem with overdrive, cause it seems to surge in 3rd gear also. Anyone else have this problem???

Well my 97 Bonneville SE 3800 has been great all the way up to 126000 miles. Starting to get a problem with the trans fluctuating in and out of over drive at higher speeds. When on the expressway doing about 65-70mph the rpms will bounce between 2200-2500. To me it seems like it will go into ...