1998 Ford Expedition: check engine light

Filed Jun 9, 2009 · Engine · 143,000 miles · FL

Number #4 coil pack, once air condition is turned on dripping water from lines into spark plug area, the #4 coil pack will through a code for a miss-fire. I have replaced the coil packs through out the entire engine recently again. I ran the air conditioning for about one hour and the next day I started the vehicle up and it had a rough idle. I drove approximately 6 miles when the check engine light came on. I hooked up my obd2 to see the problem found out the new #4 coil had misfired once again. I had the single coil pack replaced with 45,000 the first time then I replaced them all at 135,000. And now I had to replace the #4 coil pack again by itself at 143,000. It only throws a mis-fire once I have the air condition on.

Filed Aug 9, 2006 · Electrical, Engine · NY

I own a 1998 ford expedition xlt. My check engine light has been on for the past 8 months. When truck is connected to computer for trouble shoot egr code is detected. I have changed egr,solenoid,computer and to this date light is still on. I have been doing research and a large amount of people with ford expeditions are having this problem. Please help.

Filed Oct 30, 2003 · Engine · 120,000 miles · MD

While driving consumer heard a tapping sound coming from the engine. Consumer continued driving when the check engine light appeared on the dashboard. Afterwards, vehicle lost power. Consumer had vehicle towed to the dealership.

Filed Jul 23, 2002 · Brakes, Engine · CA

Consumer states the engine has been replaced with a remanufactured engine 3 times once being due to a faulty connection rod, and an out of balance crankshaft, the serpentine belt, thermostat and gasket have also been replaced, also, the engine light was illuminating, dealer replaced spark plugs.*jb

Filed Apr 29, 2002 · Engine, Suspension · MI

While driving, heard a noise under the truck as if vehicle ran over something. Took vehicle to dealership, mechanic stated it was sway bar link that broke off. *ak check engine light is illuminated; dealer found hego sensors were not responding; bank 1 and 2 hego sensors were replaced.

Filed Sep 8, 1999 · Fuel system · CA

Consumer noticed that engine check light engine light came on three weeks after she purchased the vechicle. She took vehicle back to the dealership, and the mechanic told her tha it was her gas cap. They replaced it, and she was still having problems. Also, they replaced a hose running though the fuel tank. But consumer was still having problems. Mechanic told her that fuel tank had a manufacturer's defect, and they would replace the part when it arrived. Consumer is driving a rental car.

Filed Feb 1, 1999 · Fuel system · CA

Gas cap would not close/lock causing the check engine light to come on.