99 7.3 torque converter/tranmission issues - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 08-17-2012, 12:29 AM Thread Starter
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99 7.3 torque converter/tranmission issues

i have a 99 f450 7.3 2 wheel drive automatic that acts and drives fine at low speeds around the neighborhood and around town but acts up when coming from higher speeds (50+) to under 20mph. it shifts fine on highway and runs great until you exceed that 50mph and want to try and stop. the engine wants to die once you try to come to a complete stop and transmission wants to continue to push. if the can manage to get to a stop by putting it into nuetral before the motor dies then you can shift into reverse and then shift back into od with everything acting like normal.

what it seems like is the torque converter is hanging up coming from higher speeds which is when it kicks in to lower speeds and not disengaging.

no warning lights, no od lights flashing, no codes...

is there anything on the transmission or tc that can be electrical but not showing an lights on the dash?

trans flush help at this point or valves or solenoid or anything?

anyone got anything?
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post #2 of 2 Old 11-20-2012, 03:28 PM
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It sounds like the torque converter clutch is staying engaged.

00 Excursion 7.3 (1.0 Ex. hsng., 3.5" downpipe, Aero Muffler, Banks WG, Banks Comp. Wheel, AFE Stage 2 Air intake, HPX, IAH delete, DP- Tuner F6, Riffraff Boost Fooler, Melling Oil Pump), Fuel lab 41402 pump and regulator, fuel bowl delete, 910 Comp Springs/Shims, DI Pushrods, Swamps HVHF IDM, SRP 1.1 HPOP Dieselsite trans and coolant filter, 203* thermostat, Sonnax valve 0.427 and tricumulator springs, Lift, MM Hubs, 35's and 3.73s, 08 diff cover, Hellwig rr. bar
326RWHP @ 731RWTQ.
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