heater blower resistor

Andy_28 · 07-02-2010, 06:50 PM

i've got a ford focus tdci. i've been trying to change the resistor and found out its a different heater. the resistor is not on the side of it as described on here and in the haynes manual. is there another type of heater?

If you were logged in, you wouldn't be seeing this ad!
Register your free account today, or log in if you already have an account.

Andy_28 · 11-02-2010, 08:54 PM

does anyone know if i need to change the heater and/or resistor?

cossie690 · 11-02-2010, 09:09 PM

not sure mate. i take it your fan is only working on setting 4? i had this problem and it turned out to be the switch that had gone.

might help if you put the age of the car down?

Andy_28 · 12-02-2010, 02:46 PM

its a 51 model registered on the 3rd of december 01. its a ghia tdci 1.8 duratorq. it doesn't work at all not even on switch 4. in the haynes manual where the resistor pack is on the side theres nothing there at all. far down on the right side there is a 'module' which doesn't look like anything in the pictures. i'll try and get some pictures up this weekend.

tabetha · 12-02-2010, 06:18 PM

Not working on any speed ?, I would check the basics first, fuses, then check power supply at the switch and the earth on the heater motor itself, all of which can knock out all speeds, for it to be a resistor problem it would be on the slower than full speed positions where the resistor is actually used.
I've no idea where it is on your car, but know a man who does, if you phone 01603 866999 you will get through to FOCUS/MONDEO PART, who of course know these inside out as that is all they do, ace source of spares as well.
tabetha

pdfbt40 · 13-02-2010, 09:51 PM

All the speed control is on the ground side of the blower motor, the ground connection goes to the switch.

As Cossie690 says, its known for the switch itself to fail so no ground is available to the resistor pack (1-3) or the motor direct (4).

The only different heater/resistor I know of is for the digital EATC version. No resistor and electronic control of blower speed.

Martin

tabetha · 14-02-2010, 01:19 PM

I never knew that, thanks for the info martin.
tabetha

spudulike · 18-11-2011, 06:11 AM

Hi, I have a 53 plate reg Feb 2004 TDCI 1.8 duratorq and I've looked everywhere behind the glove box and cannot locate the heater resistor. I did buy a replacement but there is nothing behind the glove box that looks like the one I bought. Anyone any idea where it is or if there is one on this model ? Thanks

pdfbt40 · 18-11-2011, 01:08 PM

Its deep to the right side of the glovebox on the duct from the blower to the exchangers box.

Good picture in post #8 of this thread.
http://passionford.com/forum/technic...n-problem.html

Martin

spudulike · 19-11-2011, 06:38 AM

Hi Martin, I've seen the picture before but where you can see the resistor in it on my car it just has some sort of blanking plate. I took it to an auto electrician yesterday and he said that as the car has aircon it does not have that type of heater resistor so I'm no wiser as to where the resistor is located on my 53 plate Focus, or even if it has on e on this model/year. Now it's been looked at I now have another problem as I was driving the car back I noticed the traction control and ABS lights were permanently on so got to take it back on Monday to see what's happened there. I did get him to replace the pollen filter and re-seal properly as a precaution as when I looked for the resistor myself I thought I could feel water droplets on the fuse box behind the glove box so I dont think that will have helped matters. Also I have a problem with the battery draining after about a week so I'm having to take it off and charge. These might all be caused by the water ? possibly but any thoughts or fixes on these would be appreciated. Thanks, Tony

pdfbt40 · 19-11-2011, 06:51 AM

Having an aircon system (cooler) does not explain no resistor. Perhaps you have an Electronic Automatic Temperature Control (EATC). That means a Digital and push buttom control, no knobs. The fan then has an electronic speed control; no resistor pack.

spudulike · 19-11-2011, 08:30 AM

Hi yes, did not mention the car does have EATC so this changes things. The problem I am having regrading the heat is I set the control to Hi then as I'm driving it heats up, all fan speeds are working fine. Then obviously it get too hot so I can lower the control a notch or two then after five minutes it's only blowing out luke warm air not what you would expect if you knocked it down one notch so I have to switch to high for a bit then lower and the cycle goes on. Any idea on this ? seen it before ?
Thanks, Tony

pdfbt40 · 19-11-2011, 08:05 PM

The EATC controls the actual measured temperature of the cabin. The cabin temperature is measured at the small grill on the panel.

Therefore if you run at 'manual' HI, I'm not surprised if, when you switch to a cabin temperature of say 22 degrees, it delivers lukewarm or even cold air at medium speed to get cabin temperature to 22 degrees.

Seems to be doing what it should based on Owners Guide and the 2 Focus with EATC I've owned.

Martin

13-02-2010, 09:51 PM	#6
pdfbt40 PassionFord Regular 2003 Ford Focus Trader Score: (0) Join Date: Mar 2005 Location: Guildford, Surrey Posts: 364 Rep Power: 9	All the speed control is on the ground side of the blower motor, the ground connection goes to the switch. As Cossie690 says, its known for the switch itself to fail so no ground is available to the resistor pack (1-3) or the motor direct (4). The only different heater/resistor I know of is for the digital EATC version. No resistor and electronic control of blower speed. Martin Last edited by pdfbt40; 13-02-2010 at 09:54 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11-02-2010, 08:54 PM	#2
Andy_28 Virgin Garage is empty, add now Trader Score: (0) Join Date: Feb 2010 Location: Wrexham Posts: 7 Rep Power: 0	does anyone know if i need to change the heater and/or resistor?

11-02-2010, 09:09 PM	#3
cossie690 PassionFord Post Troll 2000 Ford mondeo My Garage Trader Score: (3) Join Date: Oct 2005 Location: further north than you... Posts: 2,642 Rep Power: 10	not sure mate. i take it your fan is only working on setting 4? i had this problem and it turned out to be the switch that had gone. might help if you put the age of the car down?

12-02-2010, 02:46 PM	#4
Andy_28 Virgin Garage is empty, add now Trader Score: (0) Join Date: Feb 2010 Location: Wrexham Posts: 7 Rep Power: 0	its a 51 model registered on the 3rd of december 01. its a ghia tdci 1.8 duratorq. it doesn't work at all not even on switch 4. in the haynes manual where the resistor pack is on the side theres nothing there at all. far down on the right side there is a 'module' which doesn't look like anything in the pictures. i'll try and get some pictures up this weekend.

12-02-2010, 06:18 PM	#5
tabetha BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: Jul 2006 Location: uk Posts: 24,621 Rep Power: 0	Not working on any speed ?, I would check the basics first, fuses, then check power supply at the switch and the earth on the heater motor itself, all of which can knock out all speeds, for it to be a resistor problem it would be on the slower than full speed positions where the resistor is actually used. I've no idea where it is on your car, but know a man who does, if you phone 01603 866999 you will get through to FOCUS/MONDEO PART, who of course know these inside out as that is all they do, ace source of spares as well. tabetha

14-02-2010, 01:19 PM	#7
tabetha BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: Jul 2006 Location: uk Posts: 24,621 Rep Power: 0	I never knew that, thanks for the info martin. tabetha

18-11-2011, 06:11 AM	#8
spudulike Virgin Garage is empty, add now Trader Score: (0) Join Date: Nov 2011 Location: wales Posts: 3 Rep Power: 0	Hi, I have a 53 plate reg Feb 2004 TDCI 1.8 duratorq and I've looked everywhere behind the glove box and cannot locate the heater resistor. I did buy a replacement but there is nothing behind the glove box that looks like the one I bought. Anyone any idea where it is or if there is one on this model ? Thanks

18-11-2011, 01:08 PM	#9
pdfbt40 PassionFord Regular 2003 Ford Focus Trader Score: (0) Join Date: Mar 2005 Location: Guildford, Surrey Posts: 364 Rep Power: 9	Its deep to the right side of the glovebox on the duct from the blower to the exchangers box. Good picture in post #8 of this thread. http://passionford.com/forum/technic...n-problem.html Martin

19-11-2011, 06:38 AM	#10
spudulike Virgin Garage is empty, add now Trader Score: (0) Join Date: Nov 2011 Location: wales Posts: 3 Rep Power: 0	Hi Martin, I've seen the picture before but where you can see the resistor in it on my car it just has some sort of blanking plate. I took it to an auto electrician yesterday and he said that as the car has aircon it does not have that type of heater resistor so I'm no wiser as to where the resistor is located on my 53 plate Focus, or even if it has on e on this model/year. Now it's been looked at I now have another problem as I was driving the car back I noticed the traction control and ABS lights were permanently on so got to take it back on Monday to see what's happened there. I did get him to replace the pollen filter and re-seal properly as a precaution as when I looked for the resistor myself I thought I could feel water droplets on the fuse box behind the glove box so I dont think that will have helped matters. Also I have a problem with the battery draining after about a week so I'm having to take it off and charge. These might all be caused by the water ? possibly but any thoughts or fixes on these would be appreciated. Thanks, Tony

19-11-2011, 06:51 AM	#11
pdfbt40 PassionFord Regular 2003 Ford Focus Trader Score: (0) Join Date: Mar 2005 Location: Guildford, Surrey Posts: 364 Rep Power: 9	Having an aircon system (cooler) does not explain no resistor. Perhaps you have an Electronic Automatic Temperature Control (EATC). That means a Digital and push buttom control, no knobs. The fan then has an electronic speed control; no resistor pack.

19-11-2011, 08:30 AM	#12
spudulike Virgin Garage is empty, add now Trader Score: (0) Join Date: Nov 2011 Location: wales Posts: 3 Rep Power: 0	Hi yes, did not mention the car does have EATC so this changes things. The problem I am having regrading the heat is I set the control to Hi then as I'm driving it heats up, all fan speeds are working fine. Then obviously it get too hot so I can lower the control a notch or two then after five minutes it's only blowing out luke warm air not what you would expect if you knocked it down one notch so I have to switch to high for a bit then lower and the cycle goes on. Any idea on this ? seen it before ? Thanks, Tony

19-11-2011, 08:05 PM	#13
pdfbt40 PassionFord Regular 2003 Ford Focus Trader Score: (0) Join Date: Mar 2005 Location: Guildford, Surrey Posts: 364 Rep Power: 9	The EATC controls the actual measured temperature of the cabin. The cabin temperature is measured at the small grill on the panel. Therefore if you run at 'manual' HI, I'm not surprised if, when you switch to a cabin temperature of say 22 degrees, it delivers lukewarm or even cold air at medium speed to get cabin temperature to 22 degrees. Seems to be doing what it should based on Owners Guide and the 2 Focus with EATC I've owned. Martin

19-11-2011, 08:05 PM
PassionFord Ford Focus Paid Advertisement