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Old 07-19-2009, 12:02 AM   #1 (permalink)
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Turtle - '01 Suzuki Swift Plain Jane
90 day: 40.92 mpg (US)
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Turtle Auto Trans info needed!

I have a 2001 Swift 1.3 AT and have two questions; first there are two hoses running from the trans to/from the radiator to cool the ATF, does anyone know which is which or do I start the car with one hose disconnected and blow fluid everywhere? I am installing an inline Trans Fluid Filter and it is directional.

Second; are Auto Transmissions from earlier years (1990-1995) forward compatible to my 2001 ?? If not, are the internals compatible assuming the exterior mounts etc... are different??

Thanks!!

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Old 08-15-2009, 09:36 PM   #2 (permalink)
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Usually the cooler for an auto trans is setup in the return to the pan from the pump/valvebody.

My experience has shown that the OEM's use a counter-flow arrangement (this has not been tested on a metro). ATF flows the opposite direction of the coolant. A study of heat exchanges will show you that this type of heat exhanger will give a better cooling capacity than fluids flowing the same direction, so this makes sense.


An easy way to check this would be to see which line is hotter after a drive, the difference may not be much.

It's not likely that the earlier transmissions are a direct swap, by 2001 most automatic transmissions had electronic controls. Earlier models may or may not have had this, but the electronic controls they have will most likely be different.

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