Serving Our Country!
Join Date: Aug 2007
Location: Manor, TX
Thanked 27 Times in 26 Posts
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Just got back from a 1300mi trip pulling ~15k that included several nasty mountain passes. Aside from loosing AC, leaking airbags and breaking a universal, my transmission is having an issue. While going down a steep windy grade, I attempted to manually put the transmission in 1st so I could lock the TC and engage the EBPV. I was able to move the shift lever into 1st without issue, but the truck acted as if I had placed it in neutral. 2nd worked fine. I tried 1st several more times during the trip with the same results. Several hundred miles later, I went to grab second for a light but changed my mind before moving the lever. When I stepped on the gas the truck acted as if I were in neutral even tho I was in drive with OD locked out. I pulled over, placed the truck in park and restarted the motor. Everything was back to normal. Then when I reached my destination, I decided to give 1st a try again and it worked.
OD light is NOT flashing and the highest trans temp was 210 but usually was around 180*. Was using a 40hp tow tune from DP.
Any ideas? Need to get this fixed ASAP.
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