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No Heat in 1990 Jeep Cherokee

Any Ideas, I get air flow when the fan is on! The heat works, but barely! It is a 1990 jeep cherokee 4x4 4.0

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  • Anonymous Dec 14, 2007

    I have no air flow inside the cab from the heater on my 1983 jeep j-10. I have replaced the blower motor and the resistor,but still have no air flow. The door in the heater core box is in the correct position for heat and not cool air. If I open the door that is vacuum controlled on the passenger side duct work inside the cab I get airflow. I have no vacuum going to the selector switch on the dash. What do I need to do to fix the problem?




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Well the first thing i would suggest is you take a look at its thermostat that could be over regulating hot air from flowing tothe heater if thats not got any major effect then have you been using an anti freeze formula for your engin coolant , because if not then it means the hot water pipes to your heater are blocked thank you.... if this was to benefit to you pease return the favour with a posetive rating

Posted on Nov 29, 2007


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