cooling fan doesn't seem to run

Questions specifically about a Petrol powered Citroen C3 (usually engine or fuel related problems).
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My Name: twoceevee

Member
Posts: 3
Joined: Mon Dec 09, 2019 5:26 pm
Model: C3 Pluriel - with or without roof
Year: 2009 (59)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 60000
Trim Level: Other
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)

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Help! Another cooling fan question.

I've recently acquired a C3 1.4 Pluriel Charleston as a first car for my DD. Since coming into my ownership, the car has received a fair amount fettling from a well know specialist (including a new head-gasket) and I'm now tasked with slowly putting some of the other minor issues right.

However, driving the car myself, I've noticed that the cooling fan doesn't seem to run, unless the Air-Con is switched on. It can be run for 20 mins (at national limit), parked for 5 mins or more, and still no fan cut-in. The engine does begin to "smell warm".

If the Air-Con is switched on, the fan cuts in straight away.

I'm not used to the 1.4 TU in these cars (my prior experience of personal fettling was on XW7 and XU5 many years ago) - so would welcome some advice.

Thoughts/advice?
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My Name: routemaster1

C3 Master
Posts: 224
Joined: Fri Mar 08, 2019 4:32 pm
Model: C3 2017-2020, The New C3
Year: 2019 (19)
Engine Size: 1.2
Fuel Type: Petrol
Mileage: 300
Trim Level: Flair
Gearbox: Manual 6 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: EB2DT-EB2ADT PureTech 3-Cylinder (110 PS)
Been thanked: 68 times

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twoceevee wrote: ↑Mon Feb 24, 2020 3:36 pm Help! Another cooling fan question.

I've recently acquired a C3 1.4 Pluriel Charleston as a first car for my DD. Since coming into my ownership, the car has received a fair amount fettling from a well know specialist (including a new head-gasket) and I'm now tasked with slowly putting some of the other minor issues right.

However, driving the car myself, I've noticed that the cooling fan doesn't seem to run, unless the Air-Con is switched on. It can be run for 20 mins (at national limit), parked for 5 mins or more, and still no fan cut-in. The engine does begin to "smell warm".

If the Air-Con is switched on, the fan cuts in straight away.

I'm not used to the 1.4 TU in these cars (my prior experience of personal fettling was on XW7 and XU5 many years ago) - so would welcome some advice.

Thoughts/advice?
In my experience of 6 Citroens, 5 diesels and 1 petrol, the fans vary rarely, if ever, operate in normal traffic.
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User avatar
My Name: Ozvtr

Moderator
Posts: 1330
Joined: Wed Jul 10, 2019 3:31 am
Model: C3 2002-2005, Original shape model
Year: 2003 (53)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: Other
Gearbox: Automatic PRND
DPF: No
LHD or RHD: RHD
Engine name: TU3 (75 PS)
Location: Brisbane, Australia.
Has thanked: 80 times
Been thanked: 416 times

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Near the dipstick you will see a green, 2 wire electrical connector plugged into the top of the thermostat housing. NOT the green 4 wire connector connected to the Oxy sensor!!
Start the car and wait until the engine is warmed up and there is at least 2 bars on your dash temp indicator.
With the engine running remove the connector. You will need to get your finger nail under the lug and lift it away from center point of the plug, on the housing side.
After a few seconds (not straight away) you should get all of the LEDs on the dash temp indicator light up and the fan should slowly wind up to full speed.
When you plug the green connector back in, after a few seconds (not straight away) the LEDs will go back to 2 or 3 bars and the fan should wind down and stop.
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