08 f350 Driveabilty problem - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 06-04-2011, 01:33 PM Thread Starter
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Unhappy 08 f350 Driveabilty problem

08 f350 .while driving with cruise on the transmission seems like it shifts down 1 gear and rpm goes to 4000 and the trans cooler gauge goes from middle of gauge to cold and the light around the gear indicator goes away. have to pull over turn off and restart and then will do it again. any ideas?
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post #2 of 3 (permalink) Old 06-08-2011, 02:56 PM
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I would tend to suspect a problem with the transmission control module (TCM) or the connections to it. The TCM is mounted just above the frame next to the transmission on the drivers side, so it's a bit less protected than the rest of the truck's control modules. Have the truck checked for any diagnostic codes, particularly codes stored in the TCM.
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post #3 of 3 (permalink) Old 06-14-2011, 09:49 PM Thread Starter
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was a rub spot on the wires going the tcm and was causing short. thanx for the help.
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