Please help, f-550 dump shifts badly - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 12-08-2019, 09:30 AM Thread Starter
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Please help, f-550 dump shifts badly

I picked up my 99 7.3 dump from the dealership for having a oil leak addressed. They changed out the ICP sensor as that was shot. I then Drove it approximately 30 miles and suddenly the truck would start slamming out of OD Erving up then when the speed would hit 55 it would slam back into OD. It threw a code however the next intersection I went to turn at as the truck was decelerating it down shifted then stalled out. Threw it into neutral and it fired right back up, back into gear, next light same thing, stalled out. Then it was fine other than randomly slamming out of o/d. Shut the truck off, it sat for a couple hours then drove home an hour and was fine. Today I tried to retrieve codes and it only had a C1230 wheel speed sensor code. Could that cause these issues?

New:2016 F-250 XLT,6.7 Diesel, Bone stock,
Work:2016 F-450 XL 6.7 16' Aluminum box. 170,000 mi

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Sold: 2009 F-250 Lariat, Bone stock, BFG All Terrains
Sold and Missed: 2003 F-150 2 WD Super Cab, Step side. BF All Terrains. "Grandpa's Truck"
Work:2011 Chevy Express 3500 6.0L, Custom roof rack. Sold
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