NHTSA Campaign Id 89V080000; Date: May. 19, 1989
This could result in rear suspension failure at theaffected wheel with an adverse affect on control of the car, which couldcause an accident.
1989 Ford Thunderbird; 1989 Mercury Cougar
Component: Suspension:rear:springs
Manufactured by: Ford Motor Company
Affected Units:: 10,600
Improperly heat treated rear suspension knuckles could experience high mileage fatigue cracks and eventual fracture.
Replace knuckles that have the affected lot codes.
System: rear suspension knuckles. Vehicle description: passenger cars.
Date Owners notified by Manufacturer: Jun 9, 1989
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