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Join Date: Nov 2012
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I was focusing on the lines-to-cooler, and thinking one may have been injured or ruptured- like, something hit them or they are bent/kinked..
it sounds like you've lost hydraulic pressure, is the basis of my concern..
edited to add: there is a thermostatically controlled valve in the transmission that diverts 90% of flow back to the transmission when operating temperatures have not reached 165*, and allows 10% to circulate to the cooler..
here are a few "If's":
If that valve is clogged up with debris, it stands to reason that more than 90* of the flow is being constricted
If that valve isn't allowing flow to circulate, the transmission will get hot internally while having nice cool oil on the other side of the valve- and if the transmission is overheating internally, it will do funky things.. And, it's possible the transmission will starve for fluid to- which could also be the cause of your situation...
I don't know where the temperature sensor/sender is located in these things.. it 'may' be in such a location that a reading form it isn't telling the true story of it's condition.. if it's on the hot side (exiting the trans heading toward cooler) you'll see it on the dash gauge.. if it's 'after' the thermostatic valve, you may not see the temperature on the dash..
all the same, from what you've described it seems to me you've lost pressure somewhere.. an external leak would be easy in this case- but if you're losing flow due to an internal valve, then that can be a booger to figure.. If I'm not crazy, I think you can get a snap-on scanner hooked up that monitors pressures.. that would be a good start if there is nothing obvious (like a puddle or a kink)..
Last edited by drewactual; 02-05-2013 at 07:44 AM.