Ford Expedition, ‘99.What does that mean?My car stutters a little when the Service Engine light is on but doesn‘t when it‘s just the ABS warning sign. They‘re never on together at the same time. Why?
One of your 8 coil packs is bad
service engine light is telling you there's a fault in the system,ie., map sensor/map sensor/tps/oxygen sensor(s). abs light depending on color, I assume it's yellow mean's there's a fault in you brake system. the stutter in the car sound's like an oxygen sensor.
The service engine light means you have an engine problem. You'll want to have the truck scanned to see what it is. Many auto parts chain stores will do this for free though they can't do a more in depth scan like a Ford dealer could. The light doesn't have to be on when they do it. When it comes on it sets a history code in the computer which is what they will read. The ABS light is indicating a fault in you anti-lock brake system. Usually not serious, you will still have brakes, but their anti-locking (anti skid) capability is disabled while the warning light is on. Parts stores may or may not be able to read the ABS codes, not all code scanners are equal. But if they'll scan for free, it doesn't hurt to ask. Cheap ones won't read all system codes. ABS problems are NOT related to engine problems, just your brakes. Write down the codes they find or ask for a printout if they can make one. Then you'll have to decide what you are going to about the problems found. Good luck, and I hope they are easy and cheap to fix.
