Tranny don't like cold weather
Senior Member
Joined: Feb 2005
Posts: 100
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From: Eastern Iowa
sorry for hijacking this thread (though it seems that jlrf150 question was answered) but now i'm a little scared, the tranny has already went out once in the bird and i dont want it to go out again. 
so since its hydraulically operated, its not going to hurt anything that the tranny doesn't need to be warmed up to go into OD?? or should i run in 2nd gear (or 3rd, which ever one it is before OD) for awhile to let the tranny warm up? and i take it that it doesn't have a temp sensor?
so since its hydraulically operated, its not going to hurt anything that the tranny doesn't need to be warmed up to go into OD?? or should i run in 2nd gear (or 3rd, which ever one it is before OD) for awhile to let the tranny warm up? and i take it that it doesn't have a temp sensor?
Senior Member
Joined: Jul 2004
Posts: 6,200
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From: Easton, Pa.
The overdrive is accomplished altogather different in an AOD than in a AODE/4R70 type from 94 up.
There is nothing you can do to change it.
The only heat aside from the converter fluid shear, is from the cooling line that goes thu the radiator with the engine up to operating temp.
The only other item for longevity is to be sure the TV cable setting at the throttle body is proper. This should have been done when the trans was last worked on for replacement or rebuild.
There is nothing you can do to change it.
The only heat aside from the converter fluid shear, is from the cooling line that goes thu the radiator with the engine up to operating temp.
The only other item for longevity is to be sure the TV cable setting at the throttle body is proper. This should have been done when the trans was last worked on for replacement or rebuild.
Senior Member
Joined: Oct 2002
Posts: 7,295
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From: St. Louis (Out in the woods)
Originally Posted by countyboy04
My 04 is acting the same way. It even did it a couple of days ago when the temp was in the 70s.
It's still a "cold start".
Here is a brief description of the TFT sensor's contribution to operations:
Transmission Fluid Temperature (TFT) Sensor
The transmission fluid temperature (TFT) sensor is located on the lead frame assembly near the shift solenoids on the main control valve body. It is a temperature sensitive device called a thermistor. It sends a voltage signal to the PCM. The voltage signal varies with transmission fluid temperature. The PCM uses this signal to determine whether a cold start shift schedule is necessary. The shift schedule is compensated when the transmission fluid temperature is cold. The PCM also inhibits (TCC) operation at low transmission fluid temperatures and corrects electronic pressure control.
Member
Joined: Dec 2005
Posts: 14
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From: Emeigh USA
Just something to add. The last 4 days in PA the weather gave us a break. I left work yesterday and the temp was 74. I have notice a big difference in my f150 5.4L shifting more smoothly. I even saw the gas gage not drop as quickly. I filled on the first day that we had higher temp and filled up today and I have been getting any where between 14 and 15 mpg. Since the weather warmed up and the shifting was a lot smother I got 17.669 mpg to be exact. Just my normal days of driving to work and back. So to get back to the point that cold weather does effect you transmission and the way it shifts. I thought I was going to have transmission problem this year but since I saw the warm weather for a few days, it is running good. 84k and no problem. Nock on wood. I do a lot of towing too.
Senior Member
Joined: Nov 2005
Posts: 239
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From: Salt Lake City
Fancy
Man, i had no idea that the newer F150's had features like that. I mean i've heard of features like that but didnt know F150's had them. Jeeze your guy's trucks are fancy..i thought mine was nice enough. That is sweet. Yep. Gotta love the Fords.