motor and rad is fairly new and the issue has been from the beginning.( it doesn't streak to a higher temp in traffic..it takes a while to get to 200 . I have tried most everything except going to a HV pump vs stock and upgrading to a 4 row aluminum. I'm not enthused about electric fans but as stated in My original post the car runs cool down the road even on the hottest days so at idle it is not getting enough air through the rad or the circulation may be too slow. With the setup as is...IF the fan could pull air through the rad at the equivolent of 35 mph...it would never go over 180. Down the highway on 90 plus days the car runs at about 175-180.