BJazzy759
New Member
- Joined
- November 2, 2013
- Messages
- 3
- Reaction score
- 0
- City, State
- Fl.
- Year, Model & Trim Level
- 91 Ford Explorer
hello i have changed nearly every sensor on my 91 explorer. from map sensor to just recentlly my 02 sensor. my check engine light was on,hooked up to machine.it read o2 sensor,so i changed it. the check engine light still comes on and trucks rpms drop really low almost shutting off then revs up again and repeats. also started hearing whining from fuel pump?thank you for any help