?Can anyone help me figure out what is wrong with my vehical?

Try cleaning the injectors and check the motor mounts.

Check that your spark plugs are in properly and do not need replacing. If it's not that, it could be the fuel:air ratio.

It will be the fuel idle shut off valve. It sounds to be half way between on & off, hence shuddering etc. You will have to go to the main dealers & buy one, not too cheap though!

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