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.
Pain caused by a condition in the lung is often sharp, and commonly worsens during a deep breath. A variety of disorders, some which are very serious, can cause stabbing pain when breathing. Disorders not involving the lungs may also cause a similar symptom. A physician should evaluate the cause of a the pain. Membranes, or pleura, surround the lungs and line the chest cavity, separating them.