XJpropeller

I've got a 93 country i just traded for a paint job on the nieghbors house. 183,000 miles. I've just finished with a tune up(plugs,wires,cap and rotor and filters) and once its up to temp, the idle goes to crap....eventually shutting the vehicle off. I haven't replaced the o2 sensor or the MAP sensor. I'm wondering if these are a likely culprit or should I go to the fuel system(injectors,pump,etc..)?

jd4x426

try cleaning the IAC it controls the idle of the vehichle just take it out and spray down th einside with some electical cleaner or something of the sort

XJpropeller

yeah, that was the first thing i tried. wondering if i need to replace it??????

jeepfreak82

Try either ignition coil, or possibly crank position sensor. The coil can go bad and short out internally when it gets hot so that would be a starting place. The IAC only controls how much air is allowed through the intake at idle and does not contribute to the quality of the idle.

Crunsch

I had one that when it got warm it would run like crap. On cold days it was fine. Someone said, "Try the vacuum lines for cracks, sounds like it's getting a loss somewhere." Sure enough there was a crack in one of the lines. So I replaced em all. Ran fine after that.

jeepfreak82

That would not be a bad idea to check either but it rarely shuts it down... Definitely goofs the idle up though.