I have a 2005 f-250 at work that stalls out when we try to yank buses and stuff out of the mud. When it gets to the end of the tow strap and jerks back it dies. I know,I know, it's not good on the truck to treat it like that,but I have to do what the tell me. So is the torque converter locking causing it to stall or does it have some kind of inertia sensor that shuts it down. I think the converter is locking but I'm curious if it could be something else.

 

ur prolly right plus its a stroker jk i own dodge and stroker and like em both dodge more so

 

What year truck, how many miles, any other symptoms? Any smoke at all even on start up?

It's not the torque converter unless something is seriously wrong. It would never lock up in a short burst like that unless you had a tune on that had a torque converter lock.

The only inertia switch I'm aware of is the one to set the airbags off, so if the airbags haven't popped that's probably still good... haha.

 

2005,It has around 55K. It burns about a gallon of coolant every two months and makes a light haze of black smoke during acceleration.

 

A gallon of coolant ever two months? How often does it get used? What's it boosting too under heavy acceleration? I bet the vanes in the turbo are sticking to start with, which is likely since it's an 05 with only 55k miles, it tells me it sits a bit. Are you sure it's burning coolant and not just pushing it out the overflow?

 

You should probably put a scan tool on it and see what the EOT and ECT temps are.

 

It only gets driven 6 miles a day most of the time. When the guys use it pull a 42,000lb bus in,it's wot from light to light and it makes about 25-30psi and still hazes black smoke. They did hook it to a scanner and the only code that came up was #3 glow plug shorted or something.

 

so ur sayin the vaines stickin is causin the truck to choke its self out???? im curious i mean he said he was tryin to pull a bus and shes jus dyin. i guess ur on the same page but sounds like to me shes jus shuttin down like wen a truck chokes out wen tryin to take off with a heavy load in a high gear. but hell mi stroker is fine and mi cummins never dun anything like tht so ig i might not be anywere near the same page

 

I reread my post and I didn't explain it right. The sudden jerk when getting to the end of the tow strap(it's moving a good 15-20 mph when it get to the end) causes the truck to shutdown like the key was turned off, but it starts up normal. When it's towing 40,000lbs, they drive like a 1/4 mile car from light to light and I figure that where the smoke is coming from.

 

No I don't think the sticking vanes are causing the truck to shut off, but from what he described it does sound like they are sticking. Still not sure why the truck would shut off, but I've never really drove one at 20mph and had it come to a dead stop either haha.


A stock truck shouldn't smoke at all, if you have black smoke coming out of it, I'm guessing the turbo vanes are sticking, and from what you've said about the truck being an 05 and only 55k miles... sounds like it probably sits a bit, which leads to sticking vanes. Sticking vanes lead to overboosting and blown headgaskets too.