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Hard acceleration

Tiny
BONNIE CARMEN
  • MEMBER
  • 1999 FORD MUSTANG
  • V6
  • RWD
  • AUTOMATIC
  • 107,800 MILES
When I accelerate hard at about forty five mph I get a stutter but not at a slow acceleration. Also when I have to climb a really steep hill it feels the same stutter or like it is missing. Any ideas?
Sunday, July 2nd, 2017 AT 9:18 PM

3 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,873 POSTS
The next time this is going to occur, tap the brake pedal lightly with your left foot, or hold that pedal down just a little. If that makes the problem not occur, you are feeling a shudder from the torque converter. The clue is the speed you listed. At lower speeds it is not trying to lock up yet, (for better fuel mileage). At higher speeds it locks up solidly. At mid speeds, it is starting to lock up, but it engages slowly so you do not feel a sudden thump. It is supposed to slip and gradually becomes fully locked. The shudder is almost always caused by using the wrong transmission fluid. A fluid and filer change will solve that.
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Sunday, July 2nd, 2017 AT 9:56 PM
Tiny
BONNIE CARMEN
  • MEMBER
  • 2 POSTS
It was a spark plug arching. Thanks!
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Saturday, August 5th, 2017 AT 2:35 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Maybe this will help you prevent this from happening again. See my link.

https://www.2carpros.com/questions/2000-ford-mustang-cylinder-3misfire

The Medic
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Saturday, August 5th, 2017 AT 6:27 PM

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