I am currently am on long road trip. The fuel pump on my 1987 325i convertible (build date: Dec 1986) has begun to make noise (whirring sound and some clicking). How much warning does a fuel pump give before it quits? How long does a noisy fuel pump last (10 miles? 100 miles? 1000 miles?)? Unfortunately I am writing from Kings Canyon National Park. Nearest town is Fresno; nearest dealership is probably Bakersfield. Any advice how to "baby" a fuel pump? Other than that, things are fine. ($#%&^#).