I have a Nissan 2012 quest that is about 160k miles, I know the car converter is getting bad so I have emission error code, but las summer the car start having issue can not rev up in a up hill slope, so I need to flood it and wait for about 5-10 second when it start roll up and have some speed then it can rev up and pick up speed. It is quite dangerous so I stop driving it think about picking a new car, then new minivan are no longer in the 25k range, everything is above 42k now, I can’t afford it so thinking see what’s wrong and if it is worth to fix it. My kids love the minivan actually, so if possible don’t want to donate it.
I know the car converter is getting bad
How do you know that?
the car start having issue can not rev up in a up hill slope,
Very likely the transmsission (CVT) is failing. Note that transmission failure is by far the most common problem on those vehicles.
https://www.carcomplaints.com/Nissan/Quest/2012/
However you'll also want to check for excessive exhaust back pressure and run a full diagnostic scan.
it’s the dealership told me need a new cat converter when my check engine like is on.
That's nonsense, a check engine light means no such thing. Stay away from the dealer and find a good independent mechanic that will do some actual diagnosis.
you probably need a new catalytic converter. Have a good mechanic look at your car.
It’s the cat converter, not car converter, it’s the dealership told me need a new cat converter when my check engine like is on.