Question about 2002 Oldsmobile Alero

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2002 Alero shifting hard

My alero 2002 just had the theromostat and water pump replaced. Just within the last week it is shifting hard when I put it into drive or reverse. Sometimes when I am driving when it goes into 2nd. It does not do it all the time. Oil change up to date and the transmission fluid is fine. Any ideas?

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  • Anonymous Mar 14, 2014

    When driving and the automatic transmission goes to change gears it jerks sometimes hard What could be the issue I have a 2002 Blazer

  • Anonymous Mar 30, 2014

    Have to shift into 2nd in order to get regular acceleration, then back into drive at 25 mph

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I have a 1999 Oldsmobile Alero and my car was running rough and stalling. Also when the car was shifting, it was making a "thud" sound. My service engine light was on, so I took it to Autozone to run their diagnostic tool. It came back with code P0108 and they advised me to check my vacuum hoses as a possible solution. I looked and found that my air hose running from my throttle body to my map sensor was disconnected. I reconnected the hose and the engine ran normally and didn't make any "thud" sound when shifting. My car is back to normal. So check your hoses. If its still running rough, you may need to replace your map sensor.

Posted on May 26, 2009

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