I have a 1992 Pathfinder 6 cylinder 4x4 and was wondering if there's a reliable OBD tool for reading computer errors (like bad sensors)? It suddenly started running rough all the time. For a few years before that, it would suddenly run rough for a few minutes - maybe up to 10 minutes - once or twice per year. A full tuneup didn't help, but I couldn't really tell because it ran fine 99% of the time. I am wondering if some sensor or rubber hose can cause this, and if an OBD reader might help.
Thank You!
Patti
PS: a mechanic told me the spark plugs and compression were fine