My 94 ford escort will not blow heat. I have replaced the thermostat, put in new radiator, new heater core,and have replaced the water pump about a year ago.The motor will run at a verey low temp,on the gauge. If the motor does start to heat up the blower temp will get colder. My question is would the blocks water jacket be plug or the water flow be reverced. Is there any manual that would show the water flow?