My check engine light was on, took it to the dealership and they gave me a long list of things I needed to do to fix the issue. My family member is a ex machanic who did all the work for me. When he rotated my tires he was looking for a clip or something for the back tires. Now that he did that and couldnt find this clip thing, my gas pedal feels rough and it smells like something is rubbing and burning in the back wheel area. Can anyone fimilar with this tell me were or what this may be? Id rather not take it somewhere and have them say " oh this and this needs to be done" and spend money on something pointless.