Hi all - I have a quick question about my transmission that I'm hoping can be answered easily.
So, here's the story: I have spent the last couple weeks removing, rebuilding and re-installing my 5R110. Just got every thing tightened up last night, and drove it about 30 miles today but on my way home a CEL appeared and the tow/haul light started flashing. I have a code reader, which told me it's picking up a P0741 "Torque Converter Clutch Circuit Performance or Stuck Off" code. I did some research online about it and many are saying that this code appears after having severe torque converter issues or a bad TCC solenoid.
- New pump
- New Red Eagle Alto clutch plates and steels
- Upgraded low/reverse snap ring
- New pistons
- ALL new valve body solenoids
- New Billet triple disk torque converter
- Thoroughly cleaned/polished/flushed
- Filled with Mercon SP
With that said, the possibility of a bad torque converter or faulty TCC solenoid is impossible. Ford's description of the P0741 code is "The PCM sensed an excessive amount of torque converter slippage during normal driving operation".
One thing to note - during reassembly, our manual suggested checking the resistance of the Turbine Shaft Speed Sensor, which should have fallen between a certain range of Ohm's, but ours read wide open. I basically said that if Ford had it in stock, I'd replace it and if they didn't I'd leave it because there was no previous indication that it was faulty. But thinking about it now, could that be the issue? The sensor is sending a signal to the PCM that the torque converter is spinning way faster than the actual vehicle is moving?
Any ideas? Suggestions?
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2003 F250 Super Duty XLT, 6.0L, 225K, Auto Fx4
Engine mods: Upgraded Garrett turbo, Blue Spring, Edge CTS, Bulletproof 5R110, oil cooler, EGR cooler & water pump
Future mods: MBRP 4" exhaust, Bulletproof HPOP & '08 Tow Mirrors
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Daily Driver: 1999 Jeep Cherokee fully equipped for anything
Special thanks to NOR CAL EVI