Vehicle - Body Boom Between 35 and 65 MPH: Overview
88ford08VIBRATION - DRIVELINE - 5.0L ENGINE WITH AOD TRANSMISSION OR 5.8L WITH C6 TRANSMISSION - DIAGNOSTIC AND SERVICE PROCEDURE
NOISE - "BODY BOOM" - 5.0L ENGINE WITH AOD TRANSMISSION OR 5.8L WITH C6 TRANSMISSION - DIAGNOSTIC AND SERVICE PROCEDURE
Article No. 88-7-17
LIGHT TRUCK: 1983-87 E-150
ISSUE: "Body boom" and driveline vibration between the speeds of 35 and 65 mph (56 and 105 km/h) may be caused by one or more vehicle component areas. The vibration and boom are usually more noticeable when the AOD transmission is operating in overdrive, but may also occur when the AOD transmission is operating in third gear. In most cases there is more than one factor causing the NVH concern.
ACTION: To correct this, use the following diagnostic procedures and the 1987 Light Truck Shop Manual, Section 18-01 to determine which vehicle components require attention. The diagnostic procedures should be followed in the order in which they appear in this TSB article. After the completion of each section the vehicle should be road tested to determine if the condition has been corrected. If the condition is still present, proceed to the next section. An Econoline NVH diagnostic chart is on page 52 of this TSB to assist in concern identification.