1994 4.0l trans problem - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 09-06-2015
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Join Date: Aug 2015
Location: Ottawa Canada
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1994 4.0l trans problem

I was driving dawn the highway I could see blue smock behind me the at the dash and I was drive 100km but 6k rmp so pulled over and I had no trans fuld so put some in and now won't move is it a torque converter or the transmission it self?
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Old 09-06-2015
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Probably both if it ran dry and got hot, the smoke would be a bad sign.

Trans fluid is needed to cool the transmission, same as oil is used in an engine to cool the internal parts.
Heat kills automatics, which is why people add a second trans coolers to them.

The main pump in trans creates the pressure needed to circulate AFT and also to build up required pressure in the system.
When over heated the internal gaskets fail and pressure goes down, so gears can not engage.
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