I have a1999ford contour heater/ac don't work I have replaced the blowermoter and restister and check the bender door is working!! so why isn't the ac/heater working???????

The problem is that even if you replace fuse #2 and fuse #8 in the engine compartment, possibly restoring map lights, air conditioning, heater and radio, it is very likely some component is busted and drawing too much power through the fuses. It is possible that the bearings in the heater need oiling finally drying out after 10 years That fuse #2 handles multiple power on functions and if it is blown, you have to round up the usual suspects, i. e. test further to see just which component has truly failed..

What exactly isn't working? the blower motor? If so then you may need a new blower motor harness from the switch to the blower, the connector burn up (under sized wiring) at the dash control head, you will also need a new blower speed control switch.

The ac fluid(gas ) never gets old as it is a gas . The oil never oxidises as there is no air in the system so it never needs replacing. Most problems with ac units come from leaks and owner interference ( replacing gas that doesn't need replacing) or over filling with the wrong gas or just not understanding how and why it all works.

Is it ACTUALLY overheating? Check for heat at the top and bottom radiator hoses, and at both heater core hoses. If one is cold then your radiator or your heater core may be plugged and in need of a individual flush.

sounds like you have a bad temperature door actuator. This is a motor that connects to the door and uses inputs from the sensor in itself and the heater control module to open the door from hot to cold. I does take some knowledge on recalibrating this actuator and installing it. if it isn't install correctly it could damage the new part, so just take care

Typically if your leaking coolant inside the car, it indicates your heater core is split and leaking. Replacing the heater core is quite the job. It requires removal of the dash board and heater box. i replaced one in a 97 Cirrus at work last week and it was a 6 hour job. If your not mechanically inclined i would definitley recomend phoneing around for quotes to local auto repair shops and getting it done profesionally.

1. Check the fuse to the fan
2. Have a look at https://www.youtube.com/watch?v=ELg0H5Dr014 and replace the sensor.

(I'm not sure what the problem is with the ac/heater: I understand that the blower worked but, for some reason you replaced the resistor, and now it doesn't...)

Drivers side door will not close because, it might have dropped out of alignment and is sagging down slightly!!! or if it has electric door locks, and someone in the family has failed to mention door locks were activated while that one door was still open!!! now lock mechanism has passed it's normal stopping place and is now stuck, therefore already locked and not allowing door to close all the way!! you might try disconnecting battery then try jiggling the lock, and hope silenoid didn't get burned out, open passenger door and look at lock latch, then check drivers side lock latch!!! if your lucky lock latch should unlock when battery is hooked back up. i have seen this problems happen often on older vehicles!!! especially on cars or trucks that have been in fender benders.........body shops know what to check for, they fix problems like this often!!!!! Good luck!!

turning on your ac turns on ac cooling fan which draws more air thru the radiator, but in this case i would replace water pump.

hope2help shack

you prob have a vac leak on the back of the intake. good luck