My Ford Ka is stuck on the hot air, even when on cold air it still blowing only hot air. please help
See this causes and fix it. God bless you
Compressor Checks
Start with the compressor. Does it engage when you turn on the A/C?
If so, the compressor is working and the A/C system probably contains
enough refrigerant to make cold air, so the problem is inside the HVAC
unit. Replace the motor that controls the blend air door (this is a
difficult job and best left to a professional since it involves tearing
apart the HVAC unit -- about an 8 to 10 hour job!).
If the compressor does not engage when you turn on the A/C, see if it
will run by jumping the compressor clutch wire directly to the battery
(use a fused jumper wire). If the compressor works when you jump it,
and the A/C blows cold air, the system contains refrigerant and the
fault is likely a bad A/C compressor clutch relay or a bad clutch
cycling switch or pressure switch.
If the compressor does not engage when you jump it, the problem is a bad compressor clutch.
If the clutch engages but the compressor does not turn (the belt will
start to slip and squeal), the compressor is locked up and you need a
new compressor.
If the compressor clutch engages and turns the compressor, but the
A/C still does not blow cold air, the system is probably low on
refrigerant and needs to be recharged.
Refrigerant Checks
Connect an
A/C pressure gauge to the HIGH SIDE service port (located in the high
pressure hose that runs between the compressor and the condenser in the
front of the engine compartment). The gauge will tell you if there is
any pressure in the system. Simply depressing the service fitting valve
with a small screwdriver to see if any refrigerant squirts out is NOT
an accurate check because it tell you how much pressure is in the
system. It may still have some pressure but not enough to trip the low
pressure safety switch so the compressor will engage.
If your A/C system is low or out of refrigerant, check for leaks,
then have the A/C system vacuum purged to remove air. After the air is
out, it can be recharged with the specified amount of refrigerant. It
is important to get any air out as this will reduce cooling efficiency
and may make the compressor noisy.
A/C System Functional2007 ford KA blowing hot air - checkmark.gifr>
If the
refrigeration circuit seems to be working (refrigerant in the system,
compressor running and building pressure), but there is still no
cooling, the problem might be an obstruction in the orifice tube
(located in the high pressure hose between the condenser in the front of
the radiator, and the evaporator located in the passenger compartment).
A blockage here will prevent the refrigerant from entering the
evaporator or recirculating through the refrigeration circuit.
If the orifice tube is plugged, the high side pressure reading will
be lower than normal, and the low side reading will also be lower than
normal because no refr2007 ford KA blowing hot air - checkmark.gifrculating through the system.
If the
refrigeration circuit seems to be functioning normally (compressor
running, frost or condensation on the high pressure line from the
condenser to the evaporator), but no cool air is blowing out of the
ducts inside the car (and the blower is working), the fault is likely a
BLEND AIR door that is stuck in the HEAT position, or possibly a badly
clogged cabin air filter that is restricting airflow. Another
possibility would be a fault in the automatic climate control system
such as a ad interior temperature sensor or control module.
SOURCE: ford ka blows hot air even set at cold
sounds like heater control valve situated under scullle panel common fault on ka set heater fan switch half way between hot and cold with heater blowing then touch valve if pulsing or clicking noise it is faulty if doesnt solve problem faulty switch
SOURCE: ford ka heater blows hot air all the time
Taurus does not use a heater control valve. It runs coolant thru the heater core constantly. You may have a temp blend door actuator problem or a plugged up heater core is also very common. Feel the heater hoses, they should both be very hot, it one is much cooler; you can try to back flush the core.
SOURCE: 2005 KA blowing hot air out when set to cold
start car.turn on air conditioner high cool .raise hood look to see if the compressor clutch is engaged and running.if yes your ac air door could be stuck closed or the air door vacuum actutator not receiving vacuum.a vacuum line is broken or off. or the control switch bad.that control the AC and heater mode. if compressor clutch is not engagged.check for power at compressor clutch.if yes compressor clutch coil open. or the air conditioner refrigerant R 134 is low take car to a private garage with a good reputation. they wont be expensive as the dealership.have them hook car air conditioner to a manifold gauge set to check your refrigerant low side and high side pressure.
SOURCE: heater blowing hot even after changing bulkhead valve no air-con
Theres a door under the dash that directs air over the heater core if it is broken then you will not get heat but you will still have a/c.To fix it you will have to take dash apart.
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SOURCE: my ford ka is blowing hot air all the time even
You will need a ford IDS scanner to check this system correctly. You may have a bad control unit
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