I would tell the Ford dealer they need to refund the cost of the previous "repairs". They are supposed to be able to diagnose a problem and fix it properly the first time. Instead they are throwing darts at a board taking WAGs with your money. 40 hours to replace a branch tube is also absurd. Pull the cab off the chassis, pull the trans, some disassembly and you're there. A good shop can pull a cab in an hour. installation maybe two hours. Two hours to R&R the trans. Being kind and assuming a leisurely pace its maybe a 10 hour job for an experienced tech. I would ask if they are charging book time or actual time. The Ford manual has guys doing everything with the cab on the chassis, which is not the fastest way to do any major repair on one of these trucks, and good shops know that.
Also, I agree with jimmy on the HPOP. I've also never heard of a branch tube failure. Not that it hasn't ever happened, there's enough of these trucks for literally anything to have happened, but I've never heard of it.
Also, I agree with jimmy on the HPOP. I've also never heard of a branch tube failure. Not that it hasn't ever happened, there's enough of these trucks for literally anything to have happened, but I've never heard of it.