Bucking

[Riot]

So it started with a rough idle, so I let it go since it was performing well, then it got rough, only when I idle at a red light, okay, iac needs cleaning, so I head to work today, not cleaning the iac, and it starts happening on the merrit as I'm driving, not losing speed, just bucking.
Does this still fall under iac?
What else could it be?
Why is my jeep so full of fail.


Sorry for typos and grammar, on my phone typing this.

[Riot]

add check engine light to list of shitty shitness. Who wants to buy a jeep?

[BeachinXJ]

Check the Throttle position sensor with an ohm meter.

[Buffalo Phil]

My jeep does the same thing on occasion. sometimes when I start it up, runs great, sometimes it runs like shit.

Spark plug wires were changed and the problem went away for about a week, now the problem is back, but not as bad.

[Riot]

Oh well duh of course.

[Riot]

My jeep does the same thing on occasion. sometimes when I start it up, runs great, sometimes it runs like shit.

Spark plug wires were changed and the problem went away for about a week, now the problem is back, but not as bad.

Mines really bad, not drivable, fucking selling it, done. Buying a subaru.

[Buffalo Phil]

Yes, mine was really bad to. At one point it was running on 3 cylinders.

I changed the spark plug wires and the problem went away.

[Riot]

And then returned...

[Riot]

Definition:
Cylinder misfire detected- Random Cylinders.
Explanation:
The powertrain control module monitors.
Crankshaft speed and has detected misfire.
Condition
Probably Cause:
Ignition System fault-spart plug(s), ignition wires, coil.
Vacuum leak
injector fault
high or low fuel pressure

[crosbike]

your check engine light flashing?

[Buffalo Phil]

DID YOU CHANGE OUT YOUR WIRES YET?

[Ktmracer419]

could simply be a loose plug wire

[CumminsJeep]

could be a coil, wires, plugs, distributer/cap/rotor, check them all

[Riot]

Cap and rotor were bad.
Runs alright, idle's a little, my father thinks it's a small vacuum leak, which also came up on the scan.
Thanks guys.