Random Stalling when A/C on

[WAD357]

Well my buddy was having issues with his vents not working turned out truck had no vaccum bottle so I got him one hooked it up and now the vents work A/C is ice cold but when at idle the truck will stall if the A/C is on with the A/C off it runs normal... Im totaly stumped on this one anyone know where to start?

[LittleD]

Usually when the a/c is on, cherokees run at a low idle, what does his idle at with out the ac? what type of vehicle?

[WAD357]

99xj idles at 900 without A/C and drops to about 200 with A/C

[iant333]

Mine stalls once in a while with the AC on, especially if its in gear and you stop really quick. Mine when working properly actually idles higher with the AC on.

I dont have any idea either though, I replaced my IAC motor a while ago and that fixed it stalling all the time at idle but it still does this.

[WAD357]

I cleaned the IAC yesterday too maybe its time to replace it

[LittleD]

Adjust the iac so it idles higher naturally? might loose like .2 mpgs but it might fix the problem

[WAD357]

Adjust the iac so it idles higher naturally? might loose like .2 mpgs but it might fix the problem

IAC's adjustable? its not slotted like the tps

[LittleD]

Maybe im thinking of something else. the torex head on the sensor on the the tb. Next to the A.S motor

[WAD357]

thats the tps

[LittleD]

adjust it? it's still gonna idle lower with the ac, but maybe it wont stall