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Lower temp thermo-switch for S4 after-run system......(RESULTS ADDED)

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Old 04-29-2004, 09:09 AM
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Default there is no current flow to the pump when the engine is running.
i believe the blades are magnetically driven, so it spins free with normal coolant flow while the engine is on.
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Old 04-29-2004, 09:17 AM
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its a VW part. for a Eurovan.
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Old 04-29-2004, 09:29 AM
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Default Hmm... odd that the VW dealership I checked didn't stock the part then.
Oh well, they ordered it for my anyway... it'll be in on Saturday.

-Dave Pramanik
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Old 04-29-2004, 09:32 AM
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Default im pretty sure you are right...i dont have the TT wiring diagram here....
i do know that the TT afterrun (and all other modern audis, i.e. NON-b5) have the afterrun function linked to the ECU. so the ECU may tell the afterrun when to come on now.
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Old 04-29-2004, 09:34 AM
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Default probably a low use item...
whats funny to think about is the supplier information that germany will be getting in a few weeks. a whole slew of restocking requests for a eurovan temp switch...hehe.
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Old 04-29-2004, 09:37 AM
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And apparently the ECU just defaults to "always come on"
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Old 04-29-2004, 09:38 AM
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Default I can picture the parts guy sitting there scratching his head...
wondering why all the Eurovans have their thermoswitches failing at once.

-Dave Pramanik
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Old 04-29-2004, 09:39 AM
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exact;ly
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Old 04-29-2004, 09:41 AM
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which is why i have an S4 fan control module sitting on my desk
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Old 04-29-2004, 09:43 AM
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Default Hmmm, well if the choices are:
(Transverse 1.8T)
Always Come On
-or-
(2.7T)
Never Come On

I'd go for the 1.8T method.

With this new thermoswitch though, the S4 setup seems ideal.

-Dave Pramanik
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