New fan but seems to still be overheating?
There must be a good deal of dust accumulation. That dust prevent an adequate air circulation and also acts as heat isolation.
Check that all air ducts, air intake and outtakes and heat radiators are free of dust and obstruction free. Remove as much dust as you can.
Make sure that the radiators are securely fitted and can't move. A loose radiator can't do it's job.
Also, make sure that your fan(s) blow air from the bottom up.
Electro, May 2011