MuchToLearn

I just had 3.73 gears installed on my 07. I heard about gear whine or slippage and I do notice something different in the way my car shifts and accelerates. I have an auto btw.

When I accelerate sometimes it will shift into 2nd or 3rd and then for a second it will stop accelerating and then a fraction of a second later it will pull again. Is this slipping? It doesn't happen all the time. How would I check for whine/slippage? What damage could be done from whine or slippage?

moosestang

Gears don't slip. Do you have a custom tune for the 3.73?

MuchToLearn

Hahahahaa. I thought I heard people say whine and slip. Guess not!!! Yeah, I do have a custom tune for it.

I feel like an idiot

moosestang

Your hesitation sounds like a tune issue or it could be the fuel pump tsb. It could also be traction control kicking in.

gas_meet_foot

This is my guess.

thefrantic1

need info on the fuel pump tsb you mention moosestang. thanks

mygt500

Frantic1- check for the TSB on this section
https://mustangforums.com/recalls-and-tsbs/tsb.htm

thefrantic1

thanks mygt500...i will check it out.