Hi everyone.

Ive joined your forum to see if anyone has had any similar issues to me with their vehicle.

To briefly explain the fault.
The fan speed control knob regularly does not control the fan speed correctly. There will be a short 1-2 second burst of fan blower then down to minimum fan speed. The lights on the fan speed control knob do not change.

If I select the max cooling or max heating the same happens.

occasionally the system works exactly as it should.

My questions please.

1. I have heard this is a known fault.?

2. Is this diagnosable with fault codes with any diagnostics.?

3. My research online has seen there have been instances where a fan resistor has been the cause?

Any advice would be very gratefully received .

Thanks

 

 

 

A1. Never seen that fault mentioned on this forum before.

A2. With FORScan and the vLinker FS lead it may very well be possible to get a DTC for the HVAC system.

A3. The failure of the resistor pack (older vehicles) causes speeds 1,2,3, to not be available and the fan will only run on speed 4.

FORScan (for windows): https://forscan.org/download.html

vLinker FS cable: https://www.amazon.co.uk/Vgate-vLinker-Adapter-FORScan-MS-CAN/dp/B0952P4MLP

Hi @Ecost

Did you ever get to the bottom of this issue?  I am experiencing what sounds like the same problem with my 2021 transit custom.

5 hours ago, pincomat said:

Did you ever get to the bottom of this issue?

It would seem that Ecost is yet another OPW.

Joined 7th June, Posted 7th June, Last visited 7th June.

Hi, I have exactly the same problem as Elliot has, the fan works for 3-4secs when turned to full then goes to slow speed with all lights showing max. I then turn the blower off for 2 mins and back on I then get around 20secs full blower before it goes slow again!! not sure what to check. (2019 2.0)

See my reply above (7th June 2023). Use FORScan and read the DTC's for the HVAC.

 

FORScan (for windows): https://forscan.org/download.html

vLinker FS cable: https://www.amazon.co.uk/Vgate-vLinker-Adapter-FORScan-MS-CAN/dp/B0952P4MLP

On 1/27/2024 at 11:01 PM, Gedders said:

Hi, I have exactly the same problem as Elliot has, the fan works for 3-4secs when turned to full then goes to slow speed with all lights showing max. I then turn the blower off for 2 mins and back on I then get around 20secs full blower before it goes slow again!! not sure what to check. (2019 2.0)

Did you

manage to resolve this ? Mine is doing the same … 🥵

2 hours ago, 801ARD said:

Did you

manage to resolve this ?

Sometimes I get a feeling that I'm talking to myself 🤔

3 hours ago, unofix said:

Sometimes I get a feeling that I'm talking to myself 🤔

Why is that ? 

2 minutes ago, 801ARD said:

Why is that ? 

BECAUSE, everyone in this thread except me, makes one post and never returns.

Each, like you asks the same question

6 hours ago, 801ARD said:

Did you

manage to resolve this ? Mine is doing the same

 

6 minutes ago, unofix said:

BECAUSE, everyone in this thread except me, makes one post and never returns.

Each, like you asks the same question

 

So do you have a solution to the problem ? 

On 4/7/2024 at 8:59 PM, unofix said:

FORScan (for use with Windows Laptop) : https://forscan.org/download.html

It's what many Ford owners use including some Ford technicians.

vLinker FS, cable for laptop: https://www.amazon.co.uk/Vgate-vLinker-Adapter-FORScan-MS-CAN/dp/B0952P4MLP

vLinker FD, for android phone: https://www.amazon.co.uk/Vgate-Bluetooth-vLinker-Scanner-Diagnostic/dp/B08H82WC8L

vLinker FD+, for iPhone: https://www.amazon.co.uk/Vgate-Bluetooth-vLinker-Scanner-Diagnostic/dp/B08H8JHWP2

 

Search Tag:   FORScan123

On 6/7/2023 at 9:45 PM, unofix said:

A2. With FORScan and the vLinker FS lead it may very well be possible to get a DTC for the HVAC system.

 

15 minutes ago, unofix said:

 

🤷‍♂️ so yes or no 

On older cars the resistor next to the fan would cause this kind of problem....the fan would only work on the highest setting and do nothing on 1,2 or 3 settings....or possibly the motor failing on the actual fan

38 minutes ago, Daz mk1 said:

On older cars the resistor next to the fan would cause this kind of problem....the fan would only work on the highest setting and do nothing on 1,2 or 3 settings....

mmmmm........... that sounds very familiar, think I've seen that said before 🤔

On 6/7/2023 at 9:45 PM, unofix said:

A3. The failure of the resistor pack (older vehicles) causes speeds 1,2,3, to not be available and the fan will only run on speed 4.

Ah!! I remember now it was me that said it June 2023 in this very thread.