ok so i have a 1993 f-150 xlt 5.0l 2wd aod and for some reason my a/c is making my truck try to stall only when im at an idle and only when my a/c clutch engages but once its runnig the truck is fine i did a retrofit kit from r-12 to r-134 2 years ago and replaced everything concerning the a/c so their was no old oils or anything left in the system and im clue less i have done everything i can think of (iac,tps,distributor,everything that controls idle) please help me

 

did you correctly set the TPS? if it is not in range at idle it will stall when the AC kicks on. The IAC should be functioning quickly or it can cause stalling too.

 

i put it in its stock spot like the old one do you think i should try moveing it around to see if it helps

 

it needs to be Set at the correct voltage or it wont be right....

Google "How to set a Ford TPS"

 

thanks i will try this

 

i adjusted the tps from .95 to .98 and i got my shifting to do a little better but truck still trys to stall when a/c compresser engages once the compresser is on tho it runs fine

 

what is your idle rpm?

 

700 rpm with a/c on 600 with it off