reansor
Well-Known Member
- Joined
- May 21, 2013
- Messages
- 131
- Reaction score
- 4
- City, State
- Baltimore, MD
- Year, Model & Trim Level
- 2003 Mercury Mountaineer
2003 Mountaineer 4.6. I've posted a few items about assorted issues on this truck in the last month. The truck was running fine, but I recently changed my intake manifold because it was cracked and slightly leaking coolant into cyl. 5 spark plug well. I was a PITA, but I got it done and fired it up and it ran terribly. It was idling very rough and then smoothed out as the idle speed jumped up to about 3000 rpm all by itself for a little while. I scanned it and got 2 codes back for a bad coil pack and 2 fuel injector open circuits. I replaced the coil pack and put a dab of dielectric grease on the injector connectors. This cleared the codes, but it's still running like sh*t--like it was previously, but now "only" idling at 2000 rpm. After a few minutes the idle will taper down and it stalls.
Someone please help! I used to be a very good mechanic back in the day, but my skills and knowledge are a little dated. I mean stuff I could have narrowed down to 2 or 3 possible problems 20 years ago could now be one of 50 on newer vehicles.
Someone please help! I used to be a very good mechanic back in the day, but my skills and knowledge are a little dated. I mean stuff I could have narrowed down to 2 or 3 possible problems 20 years ago could now be one of 50 on newer vehicles.