4 cylinder engines may develop driveability issues and illuminate the Check Engine Light due to engine vacuum leaks. These vehicles use plastic vacuum lines which can become brittle due to heat and age. Care should be taken when replacing these lines as some may have a restrictor orifice molded inside. If lines are replaced without including the restrictors driveability issues will remain.
Engine Vacuum Leaks on Dodge Shadow
Average mileage: 94,000 (94,000–94,000)
6 people reported this problem
1990 Dodge Shadow 94,000 mi, Visitor
car will not hold idle properly all the time i can hear the line hissing and when driveing the car will bog out when given full throttel at speed wont go over 40