AKASHAJEEP
New member
This is driving me crazy. The jeep is a 96 cherokee sport with the 4.0 H.O. she just turned 150K the other weekend. I have recently replaced the plugs, wires, cap, rotor, TPS, front O2S, looked at the back and its fine, hi-flo cat within 6 months, cps when the timing gear spun 180*, along with the timing gear and chain.
Well upon first start up she is running a little rough, almost like a partial misfire. just enough to where not all of the fuel/air is being burned inside the chamber and it tries to stall it a hair. nothing extreme but enough that I can notice it. once the jeep is up to normal temps and running fine, you turn it off and go in somewhere for a bit letting it cool back down and then try to start it again and have to continously crank to get it to finally fire. I am very used to this vehicle firing on the 3-4 rotation of the motor in just about any condition. Then there is the stalling. when you stab the throttle when it is at idle below 800rpm it will try to kill the motor by what seems like flooding/starving the motor, or another way to describe it is when your timing dosent jump like it should.
I started replacing the cap, plugs wires, and all that after I started noticing these little things going on so i don't think there is any reason to believe they are the culprits of the matter. I am lost now and dont know what else to do/check without pushing this ummm jeep off the side of the hill!! honestly it is to the point now that I think if/when this prob gets fixed I am going to sell it. sorry rant over. if you guys have any ideas or have had previous experiences like this I would greatly appreciate the help. THX.
Well upon first start up she is running a little rough, almost like a partial misfire. just enough to where not all of the fuel/air is being burned inside the chamber and it tries to stall it a hair. nothing extreme but enough that I can notice it. once the jeep is up to normal temps and running fine, you turn it off and go in somewhere for a bit letting it cool back down and then try to start it again and have to continously crank to get it to finally fire. I am very used to this vehicle firing on the 3-4 rotation of the motor in just about any condition. Then there is the stalling. when you stab the throttle when it is at idle below 800rpm it will try to kill the motor by what seems like flooding/starving the motor, or another way to describe it is when your timing dosent jump like it should.
I started replacing the cap, plugs wires, and all that after I started noticing these little things going on so i don't think there is any reason to believe they are the culprits of the matter. I am lost now and dont know what else to do/check without pushing this ummm jeep off the side of the hill!! honestly it is to the point now that I think if/when this prob gets fixed I am going to sell it. sorry rant over. if you guys have any ideas or have had previous experiences like this I would greatly appreciate the help. THX.
