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2006 250 trans trouble

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Old Jan 8, 2012 | 06:40 PM
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2006 250 trans trouble

hello all as it says i have a 06 f-250 with the 6.0 auto trans, I noticed the other day when i took off with the truck cold the trans. slipped going into 4th. It shifts perfect if its warm no problems at all. Then today i took off again cold and it didnt want to shift then slipped badly i let off gas it shifted but would not go into overdrive, the tow/haul light on dash was flashing so i pulled over shut truck down for a minute started it back up and it shifted again no problems at all. Does anyone have any idea what may be going on with this thing it has 79k miles on it. Please and thanks all
 
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Old Jan 8, 2012 | 06:50 PM
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are u running any tuner?? i have heard of one of the sensors in it going bad and the tow/haul light flashing. also, how long since last service?? hopefully MK will see this and comment.
 
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Old Jan 8, 2012 | 07:10 PM
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yes it has a predator tuner on it now ive only had it for 5 months and was told they serviced trans before sale along with oil/fuel filters etc
 
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Old Jan 8, 2012 | 07:29 PM
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The flashing tow/haul means a transmission code has been stored. You need that code to determine what's wrong. The places that read codes free can't read those codes.
 
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Old Jan 8, 2012 | 07:44 PM
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ok ill run it by trans shop tomorrow see if they can pull code for me thanks for the info
 
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Old Jan 8, 2012 | 08:07 PM
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i just went out and plugged the tuner in to see if it would pick up any codes and it wont, not sure if it would if there were any though?
 
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Old Jan 8, 2012 | 08:30 PM
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Originally Posted by BIGDAWG822
yes it has a predator tuner on it now ive only had it for 5 months and was told they serviced trans before sale along with oil/fuel filters etc

if its a 6.0, anything but an sct tuner can be hard on the tranny, but i dnt think its that. i wouldnt run that tuner tho.
 
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Old Jan 8, 2012 | 08:32 PM
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im gonna put it back to stock tomorrow and see what happens, i had the bully dog on my last one and had no issues at all with it though.
 
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Old Jan 9, 2012 | 04:38 PM
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well i retuned to stock and it drives shifts perfect? has to be the programmer i suppose. anybody wanna buy a predator tuner lol
 
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