Originally Posted by Manuelcv
???? I think will be better take it to my mechanic. Thanks for trying to help but I don't understand what rpms means :-(
The gage in front of you.
One is MPH (left) and the RPM's (right)
When sitting at idle (no driving) the needle is around 600-700.
I'm thinking when you run the heat/Air cond. extra load (stress) is being put on the engine.
Maybe the jeep is shaking because it's hesitating or misfiring.
Basically it's about to stall.
Looking at that RPM gage. Is the needle bouncing around? Going lower than 500?
You possibly could have another problem.
If that's the case- if I can't help-someone on here can.
Just don't give money to a mechanic if it's something we can help you with or fix