what causes a snapping or clicking sound when starting engine on 2001 Ford Escape

sound last only about 20 - 30 seconds

Asked by for the 2001 Ford Escape
if its under the dash its most likely an a/c actuator. have the car scanned to determine which one it is and get an est
2 more answers
what engine is in your car...2.0 or 3.0?

i think Best to do automotive diagnostics to learn more about where have the problem about your car,

So that you can solve the problem