So i have a 92 jeep cherokee, 4wd inline 6, automatic. It has been running pretty well up until recently. When driveing it has a really hard time accelerating i mean goiing up a city hilled street i can only go ten miles a hour. I have switch the fuel filter, the map sensor, and the tap sensor after searcher though this fourm. I was wondering if any one could give me some insight as to what might be wrong. I know the raditor is bad i have a new one im putting on but not sure this would cause acceleration problems. the fuel pump and spark plugs are new as well. Any help would be apprciated. thanks.

Eric.