2001 Ford Expedition Engine surge

2001 FORD EXPEDITION
22,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
HOWARD74
  • MEMBER
  • 1 POST
When engine is cold it surges (not like a miss) for about 2 miles. Then it immediately stops surging and runs very smoothly from then on. No engine light on. Does not feel at all like a defective plug coil as I have experienced that type of miss on several occasions when different coils have been defective over the life of the car. What causes the surges?
Sep 9, 2008 at 6:53 PM
Advertisement
Avatar
MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
If it only happen when the engine is cold, it's probably the ECT(engine coolant temp sensor).
Can also be IAC, MAF Or TPS, try unplugging the MAF befor you start the car, if it smoothes out, replace the MAF.
Sep 10, 2008 at 3:04 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.