Welcome, Guest. Please login or register.
Sign in with Facebook Sign in with Twitter Sign in with Google Sign in with Linkedin Sign in with Microsoft

Hello! Welcome to the Ford and Volkswagen MPV / SUV Forums.
Dedicated forums for the Ford Galaxy, S-Max, C-Max, B-Max and Kuga.
User groups for the SEAT Alhambra, Volkswagen Sharan, Touran, Tiguan and Touareg!

Owners Forums for Ford and Volkswagen MPVs / SUVs

Ford Galaxy S-Max C-Max B-Max Tourneo Connect / Volkswagen Sharan Touran Tiguan Touareg Caravelle / SEAT Alhambra Alteca 

 Mk1 and Mk2 VW Sharan  Mk1 and Mk2 Ford Galaxy  Mk1 and Mk2 SEAT Alhambra  Ford C-Max B-Max  VW Tiguan  VW Touran  Mk3 Ford Galaxy  Mk3 VW Sharan  Mk3 SEAT Alhambra  VW T4 T5 Caravelle Transporter  Ford Tourneo Connect  VW Touareg

Advert:


Recent Forum Topics:

Google Translate:

Ford Galaxy / VW Sharan / SEAT Alhambra Forum:

Author Topic: Radiator fans  (Read 4842 times)

Offline Burtie

  • *
  • Posts: 59
  • Thanked: 0
  • Model: Galaxy Mk2
  • Spec: 2000 tdi 115 zetec
  • First Name: Burtie
  • Region: West Midlands
Radiator fans
« on: December 09, 2013, 09:23:55 AM »
Can somebody advise me of when the radiator fans should work as I've had a problem with my ford galaxy 1900 tdi it's the 115 pd engine as I'm not quite convinced that my head gasket is going yet as many other people give me different stories besides what I read in the Internet so I've flushed the cooling system out on my car then after refilling I've left it running untill it got hot after about two hours the radiator and bottom hose got very hot so hot I couldn't even hold my hand on it for more than a second or two but not once did the radiator fans come on I ended up bridging a wire in the radiator fan switch plug to make the fans come on.
Doing this made the radiator, the bottom hose and the fan switch on the radiator go cold, after a few minutes I removed the wire from the plug and replaced it on the switch and left the car running untill it all got hot again, I tried the wire in the fan switch plug again and same thing rad and bottom hose went cold again so unless I bridge a wire in the plug my radiator fans will not come on so when should they work or how often

Offline Chrispb

  • Mindsaysyesbodysaysnono
  • *
  • Posts: 3001
  • Thanked: 102
  • Model: Galaxy Mk2 Auto
  • Spec: 52reg TDI 115 Ghia
  • First Name: Chris
  • Region: South East
  • Country: United Kingdom
Re: Radiator fans
« Reply #1 on: December 09, 2013, 11:40:47 AM »
If your aircon is running/working then your fans should run at low speed continually while engines running.
The thermo switch in the radiator should switch the fans regardless of whether aircon is on or off but this is very close to boiling point, I don't know the exact temperature but around 95 to 98degs c  for low speed and 100 to 105degs c for high speed.

Bear in mind that cooling fans are only necessary when stationary or low speed, normal and high speed driving the ram effect is more than adequate.

I've not knowingly had my fans operate from the thermo switch not even in the summer, in normal operation these engines struggle to get up to temperature
 
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
2003 MK2 Galaxy Ghia In Solid Black 1.9 TDI 115PS. 5 Speed Automatic.

Upgraded Eberspächer booster heater  to independent heating with 7 day timer.

With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me.
All for a pint of Strongbow.

The FordMPV.com Forum - The free forum for questions and answers relating to the Ford Galaxy, S-Max and C-Max

Offline Burtie

  • *
  • Posts: 59
  • Thanked: 0
  • Model: Galaxy Mk2
  • Spec: 2000 tdi 115 zetec
  • First Name: Burtie
  • Region: West Midlands
Re: Radiator fans
« Reply #2 on: December 09, 2013, 08:44:54 PM »
If your aircon is running/working then your fans should run at low speed continually while engines running.
The thermo switch in the radiator should switch the fans regardless of whether aircon is on or off but this is very close to boiling point, I don't know the exact temperature but around 95 to 98degs c  for low speed and 100 to 105degs c for high speed.

Bear in mind that cooling fans are only necessary when stationary or low speed, normal and high speed driving the ram effect is more than adequate.

I've not knowingly had my fans operate from the thermo switch not even in the summer, in normal operation these engines struggle to get up to temperature
No fan works when the air con is turned on does this mean there is something wrong if so where should I be looking to remedy this fault all fuses have been checked and are fine

Offline Chrispb

  • Mindsaysyesbodysaysnono
  • *
  • Posts: 3001
  • Thanked: 102
  • Model: Galaxy Mk2 Auto
  • Spec: 52reg TDI 115 Ghia
  • First Name: Chris
  • Region: South East
  • Country: United Kingdom
Re: Radiator fans
« Reply #3 on: December 10, 2013, 05:39:51 AM »
Have you looked to see if the aircon clutch is engaged when engines running
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
2003 MK2 Galaxy Ghia In Solid Black 1.9 TDI 115PS. 5 Speed Automatic.

Upgraded Eberspächer booster heater  to independent heating with 7 day timer.

With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me.
All for a pint of Strongbow.

The FordMPV.com Forum - The free forum for questions and answers relating to the Ford Galaxy, S-Max and C-Max

Offline Burtie

  • *
  • Posts: 59
  • Thanked: 0
  • Model: Galaxy Mk2
  • Spec: 2000 tdi 115 zetec
  • First Name: Burtie
  • Region: West Midlands
Re: Radiator fans
« Reply #4 on: December 10, 2013, 11:34:52 AM »
Have you looked to see if the aircon clutch is engaged when engines running
I am not familiar with things like air con but I take it this clutch is on the front of the pulley wheel am I right if so what should be going on with this and is it this that makes the fan come on and what do I need to do to it to make it work if it isn't

Offline Chrispb

  • Mindsaysyesbodysaysnono
  • *
  • Posts: 3001
  • Thanked: 102
  • Model: Galaxy Mk2 Auto
  • Spec: 52reg TDI 115 Ghia
  • First Name: Chris
  • Region: South East
  • Country: United Kingdom
Re: Radiator fans
« Reply #5 on: December 10, 2013, 01:42:52 PM »
Yes the clutch is part of the pulley, if you look down at the pulley with the engine running with the aircon off you will see the pulley turning but the centre part will be stationary.

When you switch the aircon on you should hear the click of the electromagnetic clutch, (outside air temp must be above 5 deg c) now the pulley and centre part should be turning together, if it's not then the aircon is not working.
The most common cause of this is the gas pressure is to low either because it needs gassing up or it has a leak.
The high/low pressure switch will disable aircon and fan from starting, it could also be dodgy corroded wiring at the switch (behind O/S front fog light area.

You have already confirmed the thermo switch circuit is OK by bridging the terminals in the plug so either the switch is faulty or the coolant is not up to the temperature at which the switch operates, I know you said the hoses and switch was to hot to touch but that's not really accurate temperature reading.

Thermostat opening temperatures are approximately 10 deg c  below the operating limits of the thermo switch.

Just for info in case you don't know.
Pressurising the cooling system up to the limit of the cap raises the boiling point approx 25 deg c, sudden removal of the cap will result in the coolant boiling over (even when there's no system issues.
 
Only remove cap after allowing engine to cool.

Do you have Vagcom/VCDS as you may have some codes for the aircon and get more accurate temperature readings.
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
2003 MK2 Galaxy Ghia In Solid Black 1.9 TDI 115PS. 5 Speed Automatic.

Upgraded Eberspächer booster heater  to independent heating with 7 day timer.

With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me.
All for a pint of Strongbow.

The FordMPV.com Forum - The free forum for questions and answers relating to the Ford Galaxy, S-Max and C-Max

Offline Burtie

  • *
  • Posts: 59
  • Thanked: 0
  • Model: Galaxy Mk2
  • Spec: 2000 tdi 115 zetec
  • First Name: Burtie
  • Region: West Midlands
Re: Radiator fans
« Reply #6 on: December 10, 2013, 02:34:41 PM »
Yes the clutch is part of the pulley, if you look down at the pulley with the engine running with the aircon off you will see the pulley turning but the centre part will be stationary.

When you switch the aircon on you should hear the click of the electromagnetic clutch, (outside air temp must be above 5 deg c) now the pulley and centre part should be turning together, if it's not then the aircon is not working.
The most common cause of this is the gas pressure is to low either because it needs gassing up or it has a leak.
The high/low pressure switch will disable aircon and fan from starting, it could also be dodgy corroded wiring at the switch (behind O/S front fog light area.

You have already confirmed the thermo switch circuit is OK by bridging the terminals in the plug so either the switch is faulty or the coolant is not up to the temperature at which the switch operates, I know you said the hoses and switch was to hot to touch but that's not really accurate temperature reading.

Thermostat opening temperatures are approximately 10 deg c  below the operating limits of the thermo switch.

Just for info in case you don't know.
Pressurising the cooling system up to the limit of the cap raises the boiling point approx 25 deg c, sudden removal of the cap will result in the coolant boiling over (even when there's no system issues.
 
Only remove cap after allowing engine to cool.

Do you have Vagcom/VCDS as you may have some codes for the aircon and get more accurate temperature readings.
I don't have vagcom yet but then I've not realised this about air con my problem started with the cooling system pressurising and the water level dropping out of the expansion tank and the bottom hose taking a long time to warm up but in some forums I read that pressurising when engine is hot is normal, now after flushing my cooling system out thoroughly then refilling I've got the car up to temperature but this time it didnt seam too bad wether I've not had it running long enough but as I can't test it on the road as no mot yet it seams to be a guessing game as all hoses get hot I've even had the side panel off in the back and felt the hoses going to the heater in the back which get hot eventually and the pipes under the car get hot, so is the bottom hose on the radiator always the last to get hot or should it warm up as quickly as the top hose bearing in mind that there is only the aux heater under the car that is not working but interior heaters work a treat when car has been running

Offline Chrispb

  • Mindsaysyesbodysaysnono
  • *
  • Posts: 3001
  • Thanked: 102
  • Model: Galaxy Mk2 Auto
  • Spec: 52reg TDI 115 Ghia
  • First Name: Chris
  • Region: South East
  • Country: United Kingdom
Re: Radiator fans
« Reply #7 on: December 10, 2013, 02:54:42 PM »
Don't worry about the temp of the bottom hose, I would expect the coolant level to fall slightly when hot but not disappear out the bottle, if it does then there's air in the system for whatever reason you cannot compress a liquid but you can the air.

I think you really need to get the car on the road under load to confirm any boiling over issues before you go any further.

Also get your lead to scan for fault codes.
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
2003 MK2 Galaxy Ghia In Solid Black 1.9 TDI 115PS. 5 Speed Automatic.

Upgraded Eberspächer booster heater  to independent heating with 7 day timer.

With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me.
All for a pint of Strongbow.

The FordMPV.com Forum - The free forum for questions and answers relating to the Ford Galaxy, S-Max and C-Max

Offline Burtie

  • *
  • Posts: 59
  • Thanked: 0
  • Model: Galaxy Mk2
  • Spec: 2000 tdi 115 zetec
  • First Name: Burtie
  • Region: West Midlands
Re: Radiator fans
« Reply #8 on: December 10, 2013, 06:14:54 PM »
Don't worry about the temp of the bottom hose, I would expect the coolant level to fall slightly when hot but not disappear out the bottle, if it does then there's air in the system for whatever reason you cannot compress a liquid but you can the air.

I think you really need to get the car on the road under load to confirm any boiling over issues before you go any further.

Also get your lead to scan for fault codes.
Yes that's what I thought I've started it again tonight and left it on tickover untill the temperature got up to the 90 mark I then decided to take it up our main road a couple of times the temperature stayed at 90 but hoses are pressurised and water level has gone down in expansion tank so I've parked it in the drive and levy it so now if I go out tomorrow morning and the hoses are still pressurised what problem could I be looking at

 

Related Topics

  Subject / Started by Replies Latest
14 Replies
9907 Views
Latest August 21, 2013, 03:47:38 PM
by Chrispb
10 Replies
4948 Views
Latest October 13, 2014, 09:49:30 PM
by shrek
8 Replies
4586 Views
Latest January 25, 2015, 02:48:19 AM
by craig
1 Replies
2849 Views
Latest August 06, 2015, 09:30:24 PM
by insanitybeard
2 Replies
2765 Views
Latest October 06, 2015, 08:25:05 AM
by Russ2908
4 Replies
1269 Views
Latest July 09, 2017, 02:59:42 PM
by Chrispb

Advertisement: