2009 Toyota Corolla Months Ago Car Started Having This Getting On

2009 TOYOTA COROLLA
91,000 MILES
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A few months ago my car started having this problem. When getting on the interstate, passing someone on the interstate or going up a steep hill, my car would jerk/slam into gear. It happened probably once a day. I took it to the Toyota dealership and they couldn't find anything wrong with it. My husband changed the spark plugs and the problem went away. Now, a few weeks later it started doing it again. What could this be? My transmission fluid looks great.
Mar 18, 2013 at 1:40 PM
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WRENCHTECH
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It may have a weak coil but you will need some professional diagnosis to determine which one.
Mar 18, 2013 at 1:56 PM
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