Transmission slippage or no?

GMC
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MEANSTREET5150
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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
Apr 1, 2006 at 7:43 PM
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LOSONE
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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
Apr 2, 2006 at 4:06 AM
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MEANSTREET5150
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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
Apr 2, 2006 at 5:43 AM
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LOSONE
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What engine do you have and how many miles?

Pull the tranny dip stick while hot and smell the oil.

If it smells burnt and is a very dark brown then all probabliity it is the tranny

Before I would blame the tranny I probably would change the plugs.
Apr 2, 2006 at 5:57 AM
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MEANSTREET5150
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[quote:e1cda0abc1="losone"]What engine do you have and how many miles?

Pull the tranny dip stick while hot and smell the oil.

If it smells burnt and is a very dark brown then all probabliity it is the tranny

Before I would blame the tranny I probably would change the plugs.[/quote:e1cda0abc1]


engine is 3.1 and has 186,000 miles on it.

so you think it could be the spark plugs then?

thank you so much
Apr 2, 2006 at 6:04 AM
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