Alright, here is the story. 98 Grand cherokee, 5.9.

When i start the truck it will run right for 30 seconds, then slowly the idle will start to jump around. after about 1 minute the truck is shaking and it can't keep an idle, it will rev just fine but it might stall. If i was to start driving right away it will usually do this thing where it has NO power, like it can't accelerate, then all of the sudden all the power comes out of nowhere and it takes off.

After its done this, it will drive fine and have no other issues on that trip, idle or accelerating. Shut it off, restart it later and it will probably do it again on the next trip.

I was told to change the TPS, i did. seemed fine then 2 or 3 weeks later it did it again (I don't drive the truck everyday). I swapped it out for another sensor, different brand this time (bwd at first, delphi the second time). Still does it. maybe its another bad TPS... or maybe its.....(this is where you guys tell me the answer!!!)

NO ses light for it, ever.

 

i have pretty much the same thing in my 4.7. my stock pcm was fried and i thought that would fix the problem and it didnt, im sure its the o2 sensors though. what codes is it throwing if any?

http://www.youtube.com/watch?v=S0H0JRDPfew

this is what mine does