My friend owns a 94 Daihatsu Feroza. The problem is that is usually overheats. Especially when in traffic, the temperature goes up but when its running, the temperature normalizes. This always happens during the summer season. But during the rainy seasons, this problem never comes up. Any advice on what to do with the problem?

Also, is there a local forum for daihatsu enthusiast? Parang yung toyota and honda mayron kasi.

Thanks for your help.