Air Suspension/Power Steering - Service Tips

90ford25 Article No. 90-18-2
^ STEERING - POWER - EVO (VARIABLE ASSIST POWER STEERING) - SERVICE TIPS

^ STEERING - POWER - PUMP GENERATES EXCESSIVE HEAT OR BECOMES DAMAGED
LINCOLN-MERCURY: 1990 TOWN CAR


ISSUE: If the AS/EVO (Air Suspension/Variable Assist Power Steering) service switch is not turned back on after servicing, the power steering pump flows will be maximum at all speeds. This could cause extensive damage to internal pump components and eventually lead to possible pump seizure and system contamination.

ACTION: If air suspension or variable assist power steering service is required, be sure that the AS/EVO service switch is turned back on. This switch is located in the trunk. It turns off the AS/EVO control module which controls the air suspension system and the variable assist power steering system.
CAUTION: DO NOT DISCONNECT THE POWER STEERING SYSTEM EVO FOR CUSTOMERS WHO DO NOT LIKE THE STEERING EFFORTS.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 303000