|
||
|
24th July 2015, 21:53 | #1 |
Gets stuck in
75 club se tourer,75 cdt tourer connie se, 75 dealer launch Join Date: Jan 2013
Location: cheshire
Posts: 536
Thanks: 79
Thanked 97 Times in 73 Posts
|
CDT cooling fan same as v6
My 2002 tourer has the usual cooling fan issues - there is no slow speed working but The high speed runs continuously with the A/C on.
I have a spare 2.0 V6 known working radiator and fan assembly from a 2001 car. If I just swap the resistors, will this work or am I looking at this to simplistically? |
25th July 2015, 09:24 | #2 | ||
Give to Learn
Freelander 2 Join Date: Aug 2010
Location: West Midlands
Posts: 18,717
Thanks: 1,155
Thanked 6,407 Times in 3,874 Posts
|
Quote:
First do the demist test do you know which fan you have fitted four wire 3 speed no resistor or the two wire 2 speed with resistor ?
__________________
Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " |
||
25th July 2015, 10:47 | #3 | |
Posted a thing or two
Rover 75 Saloon Join Date: Jun 2009
Location: Kidwelly
Posts: 1,649
Thanks: 287
Thanked 276 Times in 238 Posts
|
Quote:
|
|
25th July 2015, 14:00 | #4 | |
Give to Learn
Freelander 2 Join Date: Aug 2010
Location: West Midlands
Posts: 18,717
Thanks: 1,155
Thanked 6,407 Times in 3,874 Posts
|
Quote:
Yes did cross my mind if David as a silver resistor in place and if so all the OP would need to do is replace it with a gold resistor from Jules
__________________
Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " |
|
25th July 2015, 15:52 | #5 |
Gets stuck in
75 club se tourer,75 cdt tourer connie se, 75 dealer launch Join Date: Jan 2013
Location: cheshire
Posts: 536
Thanks: 79
Thanked 97 Times in 73 Posts
|
Sorry gentlemen, I wasn't very clear! On my car, a 2002 CDT:
The demist button makes the fan kick in at a very high speed. It sounds like a jet taking off! In the winter months it tends to kick in and out at high speed, every ten seconds or so. Now it's summer, the high speed is on all the time the demist is activated. I've never seen or heard the fan kick in at a lower speed. Looking through the grille I can't see a resistor. My spare radiator, fan, cowl and control box assembly: Came from a 50k mile 2001 2.0 V6 I know it works on low speed with demist depressed. I know it cycles on and off to cool the engine as necessary. Also doesn't have a visible resistor. My basic question is whether I can butcher the spare V6 radiator assembly for parts to make my CDT one work? Or, do I need to spend some money on it? I only ask ask as I paid £300 for the CDT as a hack. It's been super reliable over 22k miles but there is rot in the sill, I think the brake servo us past it's best, the back box is shot and it's nearly on 200k miles. I don't want to throw money at it unnecessarily as the next mot might be financially prohibitive! Sorry if I wasn't too clear and tanks for your thoughts so far. |
25th July 2015, 17:55 | #6 | |
Posted a thing or two
Rover 75 Saloon Join Date: Jun 2009
Location: Kidwelly
Posts: 1,649
Thanks: 287
Thanked 276 Times in 238 Posts
|
Quote:
Turn the ignition on, do NOT start the engine, press demist and what does the fan do? Nothing, slow or fast and is it continuous? But to answer your question broadly then yes, you should be able to do something with the other one, although the working one sounds like a three speed too so has the potential to go wrong any time soon unless you want to do a little preventative maintenance on it. However, do the check first and let's see what is happening. |
|
25th July 2015, 18:41 | #7 |
Gets stuck in
75 club se tourer,75 cdt tourer connie se, 75 dealer launch Join Date: Jan 2013
Location: cheshire
Posts: 536
Thanks: 79
Thanked 97 Times in 73 Posts
|
Thanks, I've done the test and the fan did nothing at all.
|
25th July 2015, 21:07 | #8 |
Posted a thing or two
Rover 75 Saloon Join Date: Jun 2009
Location: Kidwelly
Posts: 1,649
Thanks: 287
Thanked 276 Times in 238 Posts
|
So the low speed has failed, and this is most likely to be brushes.
Because the AC condenser is not being cooled the pressure in the system increases to the point where the trinary switch operates the higher speed for a period. The three speed fans are a bit notorious, plenty of threads on here, for getting though these. You can do a straight swap of the motors if they are both 4 wire, as you suggest they are, but retain the original control box mounted adjacent to the fan, as the petrol and diesel variants are different. Depending on the "mileage" on the good fan you may want to consider fitting new brushes, or at least checking them, before fitting it to the car. Brushes can be obtained here http://www.engineeringcarbonproducts...on-brushes.php Note they incorrectly describe them as Heater Fan Brushes. The brushes are right, the description is wrong. Hope this helps. |
25th July 2015, 21:44 | #9 |
Gets stuck in
75 club se tourer,75 cdt tourer connie se, 75 dealer launch Join Date: Jan 2013
Location: cheshire
Posts: 536
Thanks: 79
Thanked 97 Times in 73 Posts
|
That's great, thanks for the comprehensive response. Will check brushes before fitting and report back.
|
|
|