2003 6.0 No start/running issues
Fleet Owner
Joined: Nov 2003
Posts: 27,900
Likes: 3,617
This may or may not help:
No Crank/No Start; Vehicles with TorqShift Transmission:
If this condition is occurs it may be due to a problem in the cooling fan electric clutch. This may be accompanied by transmission range sensor codes P1705 (TR not indicating neutral on self test), P0706 (TR-P sensor frequency fault) and P0707 (TR-P sensor circuit duty cycle low input). Check the voltage at the TR sensor pin 21, circuit 371, it should read 12 volts. If the voltage is low (3-4 volts), unplug the cooling fan electrical connector and retest. If the voltage is now 12 volts, try starting the engine. If it starts, clear codes and test drive to see if the TR sensor codes return. If they do not, diagnose the cooling fan electric clutch. Broadcast Messages 0520, 1069.
No Crank/No Start; Vehicles with TorqShift Transmission:
If this condition is occurs it may be due to a problem in the cooling fan electric clutch. This may be accompanied by transmission range sensor codes P1705 (TR not indicating neutral on self test), P0706 (TR-P sensor frequency fault) and P0707 (TR-P sensor circuit duty cycle low input). Check the voltage at the TR sensor pin 21, circuit 371, it should read 12 volts. If the voltage is low (3-4 volts), unplug the cooling fan electrical connector and retest. If the voltage is now 12 volts, try starting the engine. If it starts, clear codes and test drive to see if the TR sensor codes return. If they do not, diagnose the cooling fan electric clutch. Broadcast Messages 0520, 1069.
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New User
Joined: Dec 2011
Posts: 11
Likes: 0
Thank you. I have already called the transmisson shop prior to stopping by the office. Going to drop it off. I bought a Actron scanner last night and no codes. Truck runs perfect except for this. it took me driving it for a couple of days to have the symptons act up enough on me to realize what was happening. Once I felt the tranny go into neutral and found out which relay was clicking it really help me to narrow it down to this.
Thanks for the heads up on the sensor in the tranny. Will make sure the shop knows.
Thanks for the heads up on the sensor in the tranny. Will make sure the shop knows.
Hotshot
Joined: Apr 2010
Posts: 19,061
Likes: 238
From: Saratoga Springs,UT
And the code reader you got more than likely dont read tranny codes thats why you came up empty on the code reading department
Scangauge will read tranny range
thats about like shooting yourself in the foot buying that actron LOL
Scangauge will read tranny range
thats about like shooting yourself in the foot buying that actron LOL
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New User
Joined: Dec 2011
Posts: 11
Likes: 0
I replaced the trans range sensor and test drove and all seemed fine. Sent the truck out this morning with the guys and they drove 30-45 mins and same symptoms again. Feels as if someone pits trans into neutral while driving and then throws it back into gear. Any other suggestions
thanks
thanks
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