why i have a higher RPM for same speed than before on 2008 Toyota Corolla

before i had a RPM less than 3000 RPM when i drive on 75 mile per hour but now i have 3800 RPM for same speed , and i have vibration in the motor when the car is stop , what should i do ?

by in Guaynabo, PR on December 27, 2012
1 answer 2 comments
ANSWER by on December 27, 2012
Have the transmission scanned for trouble codes at the dealer or trans. shop. Sounds like it's not going into 'lock-up'.May be electrical or mechanical cause.
COMMENT by on December 27, 2012
what? no green jelly?
COMMENT by on December 27, 2012
EVERYBODY that's been doing this for more than a week , knows GREEN JELLY only works in manual trans.!!!!!!!!!!!!.........never mind.