2011 Corolla - Issue With Maintaining Constand Speed

#1
Hi, my Toyota corolla's 2011 engine misses at the constant speed and decelerates gradually when gas pedal is released. it has 59000 miles. I just bought that car. Please help me to resolve this issue.
Regards,
Alex
 
#2
what is the constant speed? sounds like you are referring to maintaining a certain speed. and vehicles normally decelerate when the gas pedal is released.
 
#3
Corolla 2011 issue with mantaining the constant speed

RPMs are going up and down in a range of ~200 - 300 at the constant speed. It starts from ~35 miles per hour, not sure about the maximum. There is also something strange about decelerating but it is hard to tell what it is.
 
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