automaic transmission oil radiator (AL4 overheating)

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My Name: simuzer

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Model: C3 2002-2005, Original shape model
Year: 2002 (02)
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not come back..

on trafic, stop-go-stop-go.. oil temperature over 100 c.. so, this fault come back..
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simuzer wrote: Sat Apr 25, 2015 5:08 pm not come back..

on trafic, stop-go-stop-go.. oil temperature over 100 c.. so, this fault come back..
According to lexia you have a faulty gearbox, particularly slipping brakes or clutches. This needs a rebuild or replacement box. Cooling the oil won't fix a broken gearbox, the heat is a symptom of the fault and not the cause of it.


The fault won't go away unless you physically repair the gearbox and then replace the oil.
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Model: C3 2002-2005, Original shape model
Year: 2003 (53)
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The oil temp should be between 60'C and 80'C. At 119'C the fluid might be breaking down and loosing it's properties and the clutches/brakes might be slipping because of that (I'm not sure, they still might be worn out).
Scale from using tap water can build up in the fine galleries of the transmission heat exchanger. This will cause overheating of the transmission fluid.
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