I thought maybe you guys could help me out here. My sister's 94 Accord EX will not put out any heat when it is cold outside. Even after a 25 minute drive (1/2 hwy & 1/2 city) the car still would not kick out any heat. The temperature gauge goes up a little when it the car is sitting at a stop light but the the temperature gauge sits almost at rock bottom on the hwy. Do you guys have any ideas?

Thanks