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Old 07-05-18, 01:28 PM   #1
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Default Overheating / fan not running / location of relay?

Hi all, just bought a 207 SW 1.4 VTi, 2009 model and it overheats when sat in traffic which I can cool down by turning the heater fans on full.

As hot air blows from the heater I dont suspect the thermostat.

Temperature gauge reads properly from cold up so I do not suspect it either.

I cannot hear a radiator fan turn when overheating so I suspect the fan relay.

Only problem is I cannot find one anywhere. Can someone please show me where it is located on my model?

Tony
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Old 08-05-18, 07:12 AM   #2
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Cant seem to find a relay for it on online parts manuals either.. is there a relay ??

Anyone know what drives the main radiator fan?

Any cooling system electronic schematic for my model?
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Old 08-05-18, 08:53 AM   #3
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Fan is controlled by the engine ecu i dont think later models have a relay except possibly INSIDE the underbonnet fusebox

Unplug the wires to the fan and power it directly to be sure its working if it is check the maxi fuses UNDER the fusebox.
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Old 08-05-18, 08:47 PM   #4
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Its the fan motor; must have taken a knock recently (I bought the car as an insurance write-off) and it jams when it tries to turn.
Helped it along and it began to turn but vibrated badly so will get another.
They must have power MOSFETs driving the fan motor with PWM - a bit risky including power drivers like that inside the ECU block though (unless they are somewhere else ).
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Old 09-05-18, 12:36 PM   #5
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On the 207 THP 150 (1.6 L Turbo) there is a relay under the right hand side headlight that controls the fan on the radiator and the intercooler fan.

More info in my thread here.

https://www.peugeotforums.com/forums/...relays-311649/
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Old 11-05-18, 06:00 AM   #6
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OK, thanks, will look out for it and check its contact resistance too (just in case) as I have to replace that headlight.
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