raditor cooling fans do not run on high

If the fans do not run on high -- and I'd suggest checking for this by turning the air conditioning system on and verifying performance -- then there could be a concern with the control and command of the fans, or with the fans themselves. A diagnostic tool can actively command components so you can verify that they work as designed. The fans are essential to proper engine cooling. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops