My check engine light came on several months ago; now the car seems to not accelerate especially past 45mph. I appears to jerk as if it's changing gears.
I've kept it maintained, oil changes, tire rotations, brake jobs, etc. What could possibly be wrong?
thanks for your help

Asked by for the 2001 Hyundai XG300
1 answer 1 comment
You need a mechanic with a scanner to read trouble codes from the computer. if the check engine light's on then there are codes stored in the computer that would be a big help in diagnosing the trouble. Check your transmission fluid, hot. Should be up to the mark, not overfilled and the fluid should be pink and clean.
Thank you Superbob, I will take it to a mechanic, or would you recommend a transmission specialist like Aamco?