2003 ford escape. about a week ago, i noticed that the guages on the instrument cluster (RPM, SPEEDOMETER, AND FUEL GUAGE) would suddenly ALL shoot to the far right, then they would all drop back to zero, and finally level off at the correct settings. this would happened most frequently when i hit speeds of 40-50 mph. i changed the cluster, but i am still getting the same problem. does this sound like an alternator issue?