If you have done all this, see my data point and tell them to tear down and inspect your transmission. Mine had a cracked bell housing and chewed gears. It’s possible something is slipping in your trans. Like I said above, the new trans and clutch totally fixed my surging issues, now verified with 1,000 miles and 4 track days.
Just off the phone with the service manager. They are replacing the tranny as well as the intake manifold. Hoping either or both of those items finally resolves.
My bet is they will find issues with the gears in the trans. Keep us posted, good luck, I know how frustrating this problem is with 1+ year of the issue myself before finally getting it fixed.
Mine was not, it was done twice and not fixed. I guess it's possible they did it wrong twice (Ford dealer incompetence is quite common), and only when installing the new trans was it done properly.
i'm having the exact same issue you had. A/C is not working and getting the stumble in 5th and 6th. could you elaborate on what you did to fix this? it took care of both problems?
AIr conditioning is unrelated. He is talking about the transmission output shaft flange nut TSB that is posted somewhere here for gt350s that can cause these symptoms.
They didn't tear town the transmission, just replaced it - so no way to know the exact point of failure. I can report the hesitation seems to be resolved!
Great news! Seems like we have pretty good data now that it’s a trans issue on this surging in 5th/6th.
My car was doing the same thing about a year ago and it was the flange nut. Once they fixed that everything was back to normal.
Thanks! Hope that's all it is.
Exactly what my 17R did as I’ve posted here. Flange nut didn’t fix mine, a new transmission and clutch did after they found chunks missing from the flywheel and gears. I lived with the issue for awhile, eventually lost reverse gear and then lost 5th gear before they tore down the trans and replaced everything. Zero issues since that happened 18+ or so months ago.
Well everything is under powertrain or extended warranty so it is what it is. Already have a 2nd motor due to oil consumption, might as well get a new tranny!
Glad to hear it. Mine was under warranty at the time too, sadly they said my clutch that had chunks missing was a “wear item” (even though it was not worn and only 11k miles) and I owed $3200 for that. I fought them and eventually paid $1800 or so for the parts online. I had to file a magnuson moss lawsuit to get compensated for that (among other things).
