99 ford expedition 5.4l engine idle roughly sometime

1999 FORD EXPEDITION
160,000 MILES
Avatar
AKITANPAKOYIOYO
  • MEMBER
  • 6 POSTS
When engine is running sometime engine act likes want to cut off then after like few minutes engine will raises itself up and running normal. I have tried cleaning throttle body with cleaner,changed fuel filter,air filter with no luck. Somebody told me that it could be vacuum leak somewhere in engine but i coudn't find any so far plus sometime there is some hesitation when i press gas pedal.
Jun 17, 2013 at 4:04 PM
Advertisement
Avatar
CJ MEDEVAC
  • CAR REPAIR CONTRIBUTOR
  • 11,004 POSTS


THIS MAY BE A POSSIBILITY.....SEE MY ANSWER IN THIS LINK

https://www.2carpros.com/questions/2005-ford-escape-every-day-crank-suv-high-idle-usually-after-30-minutes

CERTAINLY WON'T HURT ANYTHING TO CLEAN IT.....MAYBE $5-$7 FOR THE THROTTLE BODY CLEANER

I LOOKED AT "ADVANCE AUTO PARTS.COM", YOUR IAC LOOKS VERY MUCH LIKE THE "ESCAPE'S"

RETURN TO THIS POST AND LEMME KNOW IF THIS HELPS

THE MEDIC
Jun 17, 2013 at 8:30 PM
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.