A vacuum leak from the PCV grommet vacuum leak can cause the Check Engine Light to illuminate. The molded rubber hose connections may crack and collapse, causing the vehicle to run roughly. A damaged PCV hose will require replacement.
Car Problem Reports
Lincoln Continental Check Engine Light Due to PCV Grommet Vacuum Leaks
Lincoln Continental Problem
Average Mileage: 123,763 mi (100,000 mi - 147,526 mi)
Visitor, 2001 Lincoln Continental
check transmission light comes on after driving about 30 miles
service engine light comes on every now and then. Do I have to put premium gas all the time. would this cause the service engine light t come on. where would i look for the pcv valve.