Blower fan only works on full power

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My Name: samuelodog

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Just bought C3 2008 cachet - seems riddled with electrical problems.
Info/dash fault warning re. lights are intermittent.
Now I notice the Fan only comes on when set to full power.

Anyone know what this could be? Could they all be linked? Is there an easy check/fix I could perform for the fan?

Thanks
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My Name: C3driver52

Guru
Posts: 2012
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 146 times
Been thanked: 78 times

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Hi

It is the blower resistor pack, change it and see if that helps.

You can find the blower resistor pack location in the search, along with lots of examples of what they may look like and how to access them.

It's a very common problem and something you really should check before buying a used car.
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My Name: samuelodog

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C3driver52 wrote: ↑Fri Mar 26, 2021 12:19 pm Hi

It is the blower resistor pack, change it and see if that helps.

You can find the blower resistor pack location in the search, along with lots of examples of what they may look like and how to access them.

It's a very common problem and something you really should check before buying a used car.
Hi, I took out the loom connector and it looks like this :
20210326_122139.jpg
20210326_122049.jpg
20210326_122049.jpg (39.95 KiB) Viewed 255 times
Can I /should I just replace the loom connector?? Thanks
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My Name: C3driver52

Guru
Posts: 2012
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 146 times
Been thanked: 78 times

Post

Can I /should I just replace the loom connector?? Thanks
What a mess. Looks like rust? Water ingress.

Yes, I would recommend changing the resistor pack AND the loom.


It is possible to buy that loom/connector repair part along with the resistor pack.

Can you also take a picture of the resistor pack removed to show the other side.
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My Name: samuelodog

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C3driver52 wrote: ↑Fri Mar 26, 2021 2:01 pm
Can I /should I just replace the loom connector?? Thanks
What a mess. Looks like rust? Water ingress.

Yes, I would recommend changing the resistor pack AND the loom.


It is possible to buy that loom/connector repair part along with the resistor pack.

Can you also take a picture of the resistor pack removed to show the other side.
Thanks - I can't find the packs - I can see the resistor and fuse, but not the loom ? Can you share a link? thanks
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My Name: samuelodog

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Can't find this loom anywhere?
20210326_151348.jpg
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My Name: samuelodog

Post

Hi, I shone a light up under steering, near the heater loom connectors etc, there is rust here. Is this bad? How can I check if there's water getting in?
20210326_170007.jpg
20210326_170007.jpg
Attachments
20210326_170017.jpg
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User avatar
My Name: C3driver52

Guru
Posts: 2012
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 146 times
Been thanked: 78 times

Post

samuelodog wrote: ↑Fri Mar 26, 2021 3:41 pm Can't find this loom anywhere? 20210326_151348.jpg
C3Driver52 wrote:Can you also take a picture of the resistor pack removed to show the other side.
The picture may help me to point you in the right direction of the parts you need.
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User avatar
My Name: C3driver52

Guru
Posts: 2012
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 146 times
Been thanked: 78 times

Post

C3driver52 wrote: ↑Fri Mar 26, 2021 2:01 pm
Can I /should I just replace the loom connector?? Thanks
What a mess. Looks like rust? Water ingress.

Yes, I would recommend changing the resistor pack AND the loom.
Scratch that. It looks like its been in the sea :o

Trade it in/sell it at auction.

It is not worth spending more money on it as you may never fix all the problems without a huge amount of money for wiring looms and even some expensive ECUs that haven't shown up as a failure yet..


If water is getting in, it will be wet 8-)
Best to test in the car wash or at least a very rainy day.
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My Name: samuelodog

Post

C3driver52 wrote: ↑Fri Mar 26, 2021 5:27 pm
samuelodog wrote: ↑Fri Mar 26, 2021 3:41 pm Can't find this loom anywhere? 20210326_151348.jpg
C3Driver52 wrote:Can you also take a picture of the resistor pack removed to show the other side.
The picture may help me to point you in the right direction of the parts you need.
This is the right kind, but can't find a loom anywhere.
Screenshot_20210326-173418_eBay.jpg
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