Have a 88 B2 2.9, 5 speed, 4wd ...... problem is a definite miss at cruising speed,no noticeable problem at full or hard throttle just when at idle or not under full throttle ...... I am going to start with the easy fix .....fuel filter, O2 sensor, check vacuum lines, etc both valve cover gaskets are leaking badly,will replace them as well but is there something else I should start with to fix this ......maybe this is a common problem and I am missing something?????? Thanks