Re: 4.0 running rough and misfiring. Help please!
I was having similar issues on a 91 ohv 4.0
The MAF ended up bein' dirty. Cleaned that and it fixed it. Wish you luck and I hope it's a simple fix!
1991 Ranger XLT supercab 5sp 4.0 OHV 4x4
240,000 miles and counting!