heavy shutter at low RPM accel..Renix
 

Low rpm acceleration under 1500 it bucks real bad. I still have the hiccup when its warm at idle never got it fixed but the heavy random bucking at low rpm accel just started.

Havent really checked the sensors, I've been soo busy anyone got a fix or wanna point me in the right direction to save time diagnosing??:icon_smile:

sounds like me.
 

i had a 88 renix. i hated it. it was the biggest headache. I tried everything but the fuel pump. hose, full tune up, new rail, new injectors, checked vacuum ect. i have all the info on my profile. I believe I never found out what it was. I sold it. My ol lady made me.. I wish i could help but if you fix it i would like to know what it was.. shot me the diagnosis.

What is the state of the tune-up hardware? Plugs, wires, cap and rotor are to be replaced every 30,000 miles on your Jeep.
Ever cleaned your throttle body and IAC? That's normal maintenance, too.