 This phase I trial is studying the side effects and best dose of combination chemotherapy in treating patients with metastatic or unresectable solid tumors. Drugs used in chemotherapy, such as docetaxel and 17-N-allylamino-17-demethoxygeldanamycin, work in different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug may kill more tumor cells. 