Transmission slippage or no?

MEANSTREET5150

MEMBER
GMC

I noticed today that (especially when driving higher speeds and on the freeway) that my car seems to miss. It's really strange and I don't know if it is tranny slippage or not.

When I accellerate gradually, I have no problems and it's smooth. But when I put the car in overdrive or I accellerate faster, the car shakes and feels like it's missing or grabbing. Yet, when I accellerate gradually, this problem does not happen. It usually starts (or perhaps becomes noticable) around 55 miles an hour and 65 miles an hour.

It's NOT like I can't switch gears though, like I said, when I gradually or smoothly accellerate all things are fine, I only really notice it when I'm in overdrive or GOING UP HILLS.

any ideas? God Bless

Ian

4 Replies

LOSONE

MECHANIC
1,616 POSTS

What kind of car? It sounds like a Ford overdrive problem as they do shudder and it seems like an engine misfire when they are ready to come apart; expensive repair--Let me know

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Sunday, April 2nd, 2006 AT 11:06 AM

MEANSTREET5150

MEMBER
3 POSTS

I apologize, it is a pontiac Grand Am. 1996.

Like I said, when I accellerate gradually the car has no problem and runs smooth. But when I'm going up hill and I have to press the gas more, or when I'm on the freeway and I put the car in overdrive it feels like it grabs or misses. This happens around 55 miles and 65 an hour and up.

God Bless

Ian