graham ascough

2003 focus 1.6 ghia ,rad cooling fans running from cold,is this a cht fault,or does this model have a rad switch sensor,if so to either where are the locations of both sensors.

H3lsing

What's the temp like, is the coolant level alright? If it's running at high temp the termostat might be open, which would need replacing.

oudefordfiestamk1

Is this with the a/c on?

When the a/c is turned on, the fan wil also run because of the drying cyclus of your a/c.

graham ascough

cooling fan coming on from cold and constantly running,coolent level is ok,and when out on road temp gauge running halfway.this is with a/c turned off.

phil_focus

is the fan control aimed at the windscreen as i have heard this turns on the ac but doesnt light the button up and therefore will be putting the fan on...not sure how true that is though.

martysmartie

iTrader: (1)

As said due to weather if blower is in position 3 this turns on AC hence the cooling fans as well, also as said if it's aimed at windscreen regardless of blower position. Faulty NTC (AKA CTS) will also as you say cause this. THe fans are not controlled by an antique rad switch rather by the ECU it gets the information on temperature from the NTC as does the temperature gauge so normally when they go faulty you will have a duff reading on gauge.

Normally if you pull connector off this registers a fault hence ECU swicthes fans ON and then when you plug back in this is cleared and fans go off. But check the heating controls first. If it was faulty you would notice it by the way the car drives I would of thought.

Martin

graham ascough

checked out heater control and it was at screen only,moved control to screen and floor then started car up and cooling fans were off,is this the norm for this vehicle ? thanks lads.

phil_focus

yep its the norm.

if only all faults were that easy to fix

martysmartie

iTrader: (1)

As I said above ^^ yes, if heat direction switch is in windscreen fans will be ON as is AC regardless of blower position, if blower is in position 3 fans will be ON regardless of heat direction control. These are indicated respectivaly by the orange colours on the control positions. The reason for fans being on is because AC is on, always drive out of these positions unless needed as they will decrease your fuel consumption and engine power.

Martin

tabetha

Although fans will be on when cold or stationary with ac working they will go off once under way, where the switch postion doesn't cause this issue, it would indicate a major fault has been logged in the ecu, and is a safeguard, but doesn't need clearing just fault correcting then clears after a certain amount of cold starts.
tabetha

graham ascough

thanks everybody with your help on this problem.

Fsekhula@webmail.co.za

Have 2003 ford focus 1.6 engine. My rad fan is running continously when the engine is running please help.:

H3lsing

What does the temp gauge say? Is it in the red or halfway. If it's not that then it's a thermo switch on the rad: http://www.fordownersclub.com/forums...constantly-on/ read this. Ford will have teh part number.

martysmartie

iTrader: (1)

There is no thermo switch, they are controlled via the CHT sensor!

OP, I assume you have followed the advise in this thread? A common thing people do not understand is that the A/C is on when the direction control is set at the windscreen, thus the fan will be on as well.

Although a bad sensor could cause this, I don't think this is the problem, as you would have problems with driveability.

Martin

Fsekhula@webmail.co.za

The temp is half way wich indicates normal and does not matter whether aircon on or off or even the direction which the aircon faces. It just run non stop.

martysmartie

iTrader: (1)

Then it may be worth looking toward the CHT.

Martin

Fsekhula@webmail.co.za

Thanks guys for the help I appreciate it.