Helpful websites

• Yahoo Answers - Why does my 2002 Ford Focus rumble and vibrate when in reverse first thing in the morning? -- If it vibrates in any gear position other than Park or Neutral, more than likely it's the engine mount over the drivebelt, next to the coolant reservoir. It's common on these cars with age. Get the part form Ford and you'll see how it will go on. Remove 2 or 3 10mm head bolts and position the coolant bottle to the side. LIGHTLY support the engine with a jack, square under the oil pan. Remove 4 (I think) 13mm head bolts and put the new one in.
• Consumer Guide Vehicle Problems (see Engine Noise - Focus: -- Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer, however, we have our own expert looking at additional vehicle problems. Climate control: The ventilation system may make fluttering noises when using the panel/defrost setting due to a problem with the linkage or whistle when the blower is running due to a gap on the resistor mounting. (2000) Engine noise: Engine vibration while idling in reverse may be due to stones lodging in the rear, engine roll restrictor. (2000-05) Fuel pump: The fuel hose between the filler neck and tank may flake and clog. In-tank fuel filter and hoses are being replaced under a recall. (2000) Heater core: Installing a restrictor in the heater inlet hose may repair heater cores leaks. (2000-2002) Vehicle noise: The right motor mount could break due to defective hardware resulting in noise, vibration, and possible driveshaft damage. Redesigned mounts were being installed under a recall. (2000) Water leak: Rough engine running in wet weather caused by water leaking onto wiring from gap near center joint in cowl grille. (2000-02)

Find a good Ford mechanic