Hard shift + Hesitation
03-23-2010, 07:56 PM
#1
Hard shift + Hesitation
Been running my Brenspeed 87 tune. I love it, except just very recently (today and yesterday) I have been driving a little bit harder.
Say I need to step on the throttle hard to make a quick lane change, the gear will shift firmly right into engine hesitation, which in turn makes the car jerk and stumble for that split second even to the point where I got pushed backwards into the seat. Is that normal behavior with an automatic? Seems almost like a double whammy.
Say I need to step on the throttle hard to make a quick lane change, the gear will shift firmly right into engine hesitation, which in turn makes the car jerk and stumble for that split second even to the point where I got pushed backwards into the seat. Is that normal behavior with an automatic? Seems almost like a double whammy.
03-23-2010, 08:55 PM
#3
1st Gear Member
Join Date: Oct 2009
Location: Maryland
Posts: 120
Happens to me sometimes too. Im running a bamachips 93 performance tune. You should notice that hesitation with or without the tune but I think the jerk is worse because of the tune and the added power the comes along with it. Its scary at times because you don't know what the car is going do. The worse for me on time was trying to make a left turn at a light, I tapped the gas petal, nothin happened, pressed a little harder, chirped the wheels, thought i was gonna spin out!
03-23-2010, 09:09 PM
#6
I think what happened was it shifted gear (firm) then straight into the hesitation. I do not believe there was any slip involved. The ground surface was moist, but it almost virtually did the same thing today with dry pavement.
03-24-2010, 06:10 AM
#8
1st Gear Member
Join Date: Oct 2009
Location: Maryland
Posts: 120
No traction control kick in. Its just something that happens. I actually emailed Doug when he was back at bamachips to see if there was a way to tweak the tune to get rid of that hesitation.Didnt get a response then but I will try again with him now that he is with AM cause they sent me a free tune for life email.
03-24-2010, 06:27 AM
#9
From what I was told by a couple people in my club, no one has been able to get rid of that hesitation. I just found it a bit hard to shift right into that hesitation, so it feels almost like a double stall instead of just feeling the hesitation. Well, I suppose I'm not the only one then. just finding out all the little things now that it's warm hehe.
03-24-2010, 07:03 AM
#10
1st Gear Member
Join Date: Oct 2009
Location: Maryland
Posts: 120
figured there was no real way to get rid of it. I learned to drive with it tho. Sometimes just driving a little slower helps. I notice that if you are driving fast, come to a complete stop, then try to jump lanes or make a turn, the hesitation happens. Also coming off the highway it happens. Guess its one of the joys of being a mustang owner.