1990 Cherokee 4.0 losing power
This is my first post really hoping i can find a few answers here.
My problem I have I noticed about a month ago when I was driving up to northern alberta for work. Starting the rig cold I would head out on the highway and it would be running fine exactly how I'm used to it running. The further I go the more I notice it to start losing power (High-ish RPM) It would get to the point where on a hill it would start to lose power sputter/spit/and hesitate where I would have to gear down into 3rd (sometimes 2nd!) just to keep some sort of a speed up on the highway. I had a problem recently that was sort of the same as this the only difference was that it was sputtering spitting and hesitating at low RPM's when i was trying to get going then once i got to a certain RPM range it would stop. I ofund the root to that problem was that my main manifold vac line had completely snapped ontop of the tranny cuasing the low RPM sputtering...... so... thinking that vac was still my issue i gutted out the entire vac system and inspected the lines for leaks using several techniques as well as hooking it and running a vac gauge off each line which i found no problems or leaks with and my dad ( the family mechanic) pointed me in the right direction that vac leaks cuase low rpm issues and that vaccuum was not my issue in this case...... so jumping the gun a little i replaced the fuel filter, dried out my dist. cap, replaced spark plugs.......same sypmtoms occurred... so i got as basic as i could and started thinking electrical becuase one morning i noticed it was a little harder to start as if the battery/starter/altenator was lagging on me......i took my voltmeter and realized that all the cables running from my battery were rotting out and worn out from constant on and off throughout my project......i replaced all the wires leaving the battery and now it starts good and strong.....just today expecting that the battery wires fixed the problem i drove it to work ....was running fine until about 20 km's went by and it started doing it again whenever i needed power on hills i would press the gas further down and it would spit sputter hesitate and cause me to gear down however not quite as bad as before i replaced the cables .... I could use anyhelp i can get...
also any pointers on this whole forrum thing can help as well really trying to get involved with jeep communities....Ive been slowly building up and learning about my cherokee since i got it about 5 years ago.