The Check Engine Light may illuminate due to one or more engine vacuum leaks. Our technicians tell us these leaks can be caused by damage to seals and/or vacuum hoses as a result of to much ethanol content in the gasoline. Affected hoses and seals must be replaced to correct this concern.Google+
Car Problem Reports
Mitsubishi Endeavor Check Engine Light Due to Engine Vacuum Leaks
Mitsubishi Endeavor Problem
Average Mileage: 172,000 mi (98,000 mi - 240,000 mi)
Visitor, 2005 Mitsubishi Endeavor, 98,000 mi
took it to Autozone and the diagnostics was vacuum leak. Not resolved just yet.
Visitor, 2004 Mitsubishi Endeavor, 240,000 mi
My check engine light is still on because of a vacuum leak. I took the car to an autoparts store and that is what they told me. The problem has not been solved.