I have a 2004 hyundai sonata GLS 2.7l V6 that shakes when in dr. and the brakes applied and car is stopped ?
Take a look at the EGR switching valve. if that checks out ok you may want to clean the MAF and check your spark plug wires for cracks and also check your fuel injectors
Do you have any red lights or check engine light in your dashboard? If you do, go to Autozone and have them scan it for you for free, that way you will definitely know what is the real problem.
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