What's wrong with my jeep liberty?

searching01

New member
When driving, speed cannot exceed over 30 mph. The check engine light is on and every time I start my car the exhaust smells like fuel. Any info will be help. Thanks!
When exceeding over 30 mph car feels like it isn't switching gears because rpm continues to go up. It feels like driving a manual car and not switching gears.
How much would it cost to get a new catalytic converter plus labor at the dealer?
 
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