intermitten stalling when braking - Ford Powerstroke Diesel Forum
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Old 12-15-2008, 09:04 PM
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intermitten stalling when braking

04 Excursion stalls intermittenly when coming to a stop. No check engine light on when stalls. Seems to happen more when warming up, happened once when fully hot. Truck runs awsome, just all the sudden when coming to a stop, it dies. Than i crank it and starts right up like nothing happened. Has happened to me and my wife 5 times in last month. 75k miles, banks 6 gun, speed loader, Banks monster exhaust, no cat. Please help, extremely dangerous for wife to drive with kids. Thanks
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Old 12-15-2008, 09:07 PM
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Could it possibly be the Torque Converter not unlocking when the vehicle is downshifting?
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Old 12-15-2008, 09:30 PM
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I agree...Very possibly a transmission issue. Mine was doing the same and ended up getting it replaced. It was also having delayed engagement into drive or reverse. I would go to the dealer and have them see if there are any tranny codes...has your tow/haul lite flashed on the dash at all??
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Old 12-15-2008, 09:36 PM
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no tow/haul light yet. would the converter cause that? Truck just shuts off, not like it chugs or anything. It also happened going down hill at about 25mph. maybe ??
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Old 12-15-2008, 09:45 PM
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It happened 1 1/2 yrs ago so I don't remember all the details but it had to do with a solenoid that was bad in the tranny(i think having to do with the TC) and it had caused too much damage to just replace the solenoid.
Logically if the TC is not unlocking and you come to a stop then it will stall the engine just like leaving your clutch engaged with a manual trans.
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Old 12-15-2008, 09:51 PM
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if i put it i tow mode will it disable the converter clutch? Try a low buck diag?
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Old 12-15-2008, 10:21 PM
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No, your best bet is to have it checked for codes and then go from there.
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Old 01-07-2009, 10:06 PM
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okay update . . . Pritty sure not the TC. it happened to me doing 55 mph on highway. Also does it in neutral with parking brake warming up in my drive way. Im just guessing but i think its a crank sensor or a cam sensor. No codes still though, I work on mercedes and they dont set codes when the crank sensor go bad but they act the same, stalling. Let me know what you think guys, thanks big time
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