96 xj sport 4x4 she's idling bad stalling bucking idles up to 1500 in park and neutral sometimes. I want to change tps, iac, o2 sensors, but i want to know if anyone knows exactly which one it is so i don't have to buy a bunch. It'll start fine sometimes. Sometimes i have to floor it to get it started. It idles high in park and neutral. It only recently started stalling. Acceleration is horrible bucking and what not. Please help need her to get to work. And now she won't start

 

that sounds like your tps mine did something similar to what you describing and it was my tps sensor

 

Try cleaning the IAC and throttle body.

 

Mine was doing similar things and I cleaned the throttle body, IAC, and replaced the TPS with a new OEM sensor. Now it runs like a dream.

 

So i changed the tps and it doesn't have a weird idle anymore but it still sucks on acceleration when i get on her it just doesn't wanna go for a few secs then she'll take off. So idk, any other ideas, i figure o2's

 

Did you clean the IAC and throttle body? If not that would be my next step.

 

I just changed both o2's no difference cleaned the throttle body twice and the iac. i have a new iac to install tonight. And btw i do need a new alternator.

 

MAP sensor?

 

My 90 xj was running real rough, idle jumping up and down at randomn (sometimes so low it died) even a few times while accelerating. Cleaning the grounds helped a lot, but then I replaced the egr vac. Switch because mine was broken. That helped a lot because the egr pintle would move at idle causing a miss in the idle, failure of smog, and all that good stuff. Also cleaned the t.b. to new iac and every electrical connector I could. I'm still having problems but the egr switch helped a lot, and can be easily overlooked. Vaccum leaks alone can cause a lot of headache. I can't run a scan tool, but have you bothered to? Also, mine wouldn't start every morning for three days. Turned out to be a bad spade connector on the green wire running to the starter relay thing by the battery that has a bunch of grounds and wires connected to it. Just had to wiggle the wire. The jeep makes NO noise when that is bad cuz the starter can't give the signal to start the car. I laugh at how freaked out I can get only to find out the solution is cheap or free, and most of the time simple. Jeeps are awesome.

 

I hope it's not the map sensor from what i remember that little **** is expensive lol as for ground and connector i shall look them over thanks