Gerhard Fiedler wrote:

> alan smith wrote:
> 
> 
>>interesting example.....my tranny did go into a self protect mode,  as
>>described my the mechanic...shifts really hard...it was pushing the
>>pressure up to keep other things from failing I suppose...now it shifts
>>puuurfectly....albiet $2500 later.... 
> 
> 
> This is a different type of "limp-home mode". The fluid pressure in an
> automatic transmission controls, among other things, how hard the clutches
> grip. For comfort, they should grip softer, but if they grip too soft, they
> can burn up. That's why in case of trouble the safe way out is to put the
> pressure at its maximum: less comfort, but at least no burnt clutches.

Too bad Chrysler Caravans didn't do this. (1991-96)
Their trany oil filters clog with use and then the torque convertor clutch
fails due to low actuation pressure. My repair tech said "We see it ALL the time.
That's why we use aftermarket clutch replacements. The piston is bigger so this failure
won't happen to you again". $2500 later as well. GRRRRRR....



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