The transmission solenoids are located under the side cover of the transmission. The side cover comes off with the transmission still in the car, but it's quite a job, especially if you don't have a lift.
Injuries or conditions that affect the chest wall -- the rib cage and associated muscles -- are another common cause of pleuritic chest pain. Chest muscle strain due to strenuous exercise may cause pain experienced primarily with deep breathing. Vigorous activity can also lead to costochondritis, a condition involving inflammation of the connective tissues of the rib cage.
The lungs (lower part of the right lung) can cause this is they are inflamed. A pneumonia or a blood clot can cause this type of pleurtic pain (pain with deep breath. Other important structures are the stomach, liver or pancreas in the area. Inflammation of any of these can cause it.