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Cold weather O/D lockout

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Old Jan 12, 2007 | 08:43 PM
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trukr36
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Default Cold weather O/D lockout

Hi guys. I was reading over in google dodge truck forum (forgive me) that starting in '96 Dodge put in a tranny safety feature that keeps the tranny out of O/D in cold weather, this true? Just wondering because today , in -35C temps, -47 with windchill, my O/D wouldn't kick in. Had 'er in the warm shop at work for about 20 minutes checking my tires. Took off and it shifted into O/D just fine. Stopped for gas about 10 minutes later, took off again and she wouldn't shift up again all the way home. About a 30 min. drive.
 
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Old Jan 12, 2007 | 10:41 PM
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Default RE: Cold weather O/D lockout

Change the tranny temp sensor and see what happens. If the sensor is on it's way out, it will hamper proper TC lockup.

Good luck with your ride.
 
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Old Jan 13, 2007 | 01:43 AM
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Default RE: Cold weather O/D lockout

Yea, I've read that also. I think the temperature of the oil has to be around 40 F to it to go into OD. That is one nice thing about the fluid running through the radiator, it will pick up heat once the thermostat opens up.
 
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Old Jan 13, 2007 | 01:54 AM
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Default RE: Cold weather O/D lockout

This is straight from the 2001 Owners Manual:

NOTE: If the vehicle is started in ambient temperatures of -5F (-21C) or below, the transmission will not shift into Overdrive. Normal Overdrive operation will resume when the ambient temperature has risen to approximately 2F (-17C).
 
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Old Jan 13, 2007 | 04:39 AM
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Default RE: Cold weather O/D lockout

I heard the same thing, and yeah glides got it.
 
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Old Jan 13, 2007 | 12:06 PM
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Default RE: Cold weather O/D lockout

O.K. thanks. Sounds like it was just too cold for the tranny. Being in a warm shop for a short while was probably just enough to let it kick in the first time. Think I'll change the tranny temp sensor anyway, where is it located on a 5.2?
 
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Old Jan 13, 2007 | 02:43 PM
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Default RE: Cold weather O/D lockout

i've got that "feature" in my '95
 
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