Transmssion goes KLUNK!!!

[bcredliner]

Originally Posted by Doru

Thanks guys. I think I will go the TF change route. Yes, it was the "neck snapping" - just like rear ended. I have no CPO warranty. Mileage is roughly 95K. I hope it will cure it.
What kind of software update for the tranny is out there? I have the GT1 with INPA, progman, EDIABAS, etc
Is it in there?

Thanks

You could have Dinan Transmission software installed. It changes the shift points which improves acceleration, gives total control in manual mode. speeds up shifting and makes them firmer.

I don't know if it improves longevity. I do know I have 110,000 miles on a 4.6 with Dinan upgrades and 150 shot of nitrous and have done nothing to the transmission except change fluid and filter every 50,000 miles. I don't think it will fix your problem but if a fluid and filter change does it may be something to consider.

[roym01]

Originally Posted by Brandon002

I had the same issue, I had the trans fluid and filter replaced and the torque converter flushed. Problem has not resurfaced in over 2000 miles since the service.

Lifetime fluid my (insert swear describing posterior here)

Same here.

Rolling stop, hard-clunk on acceleration. 2005 4.4 with 100000 miles.

Did the ATF exchange and new filter, no flush, about 3 weeks ago. No more clunking. My indie charged me $350.