Auto Repairing 2005 Ford Excursion Vibration Diagnostics—Steering Wheel Nibble—Tire Wheel Runout And Balance
Issue various ford, mercury and lincoln vehicles may exhibit a vibration / steering wheel nibble above 50 mph (80 km/h) which may be associated to a wheel and tire vibration. Action follow the service procedure steps to correct the condition. Serviceprocedure the following revisions have been made. The road test has been simplified to include 15 minutes of driving rather than a 20 mile test drive. The requirement to bring an assistant along on the road test has been eliminated. Recordingsshould be made using the vibration analyzer and then review recordings following the test drive. The step to inspect the integrated wheel ends (iwe) has also been eliminated. 1. Long term temporary flat spotting can develop when a vehicle is stored without driving. Some initial tire and wheel vibration issues (such as flat spotting) will correct themselves after the tires have been in service for 200 miles (320 km). Confirm vehicle tires have been in service a minimum of 200 miles (320 km) to remove long term temporary flat spotting.
Do not continue with this procedure if tires do not meet this requirement. 2. Refer to workshop manual (wsm), section 100-04 to determine if a wheel and tire speed (9-14.5 hz) vibration is present. A. If the vibration is wheel and tire speed proceed step 3. B. If not, follow the diagnostics provided in the wsm, section 100-04. Note the vehicle should be driven 15 minutes to remove temporary flat spotting. Shorter test drives will result in inaccurate run out or road force® readings. If the vibration goes away during the test drive, the concern is due to temporary tire flat spotting which is a normal tire condition. No further diagnosis or repairs should be performed. 3. If tire and wheel vibration persists after the 15 minute road test, then complete wheel and tireradial run-out / road force® component test in the wsm, section 204-04 to match mount and/or balance tire and wheel assemblies. Note the match mounting procedure is more effective when using hunter road force® measurement equipment. There is a website available (www.Gsp9700.Com) to locate the nearest facility that has this type of equipment. Only use a standard balancer and manually check run out when absolutely necessary.
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