wierd idle problem (stalling when coming to a stop) with new setup

[IMPORTSMOKER]

well i got my vortech charger on along with my typhoon intake, pro products 70mm throttle body, 30#ers, 73maf and others finnaly on....i fixed the sticking throttle problem....and it runs good..except every now and then, especially after getting off of the freeway and coming to a complete stop...as i push the clutch in, the rpm's drop very low and the engine stalls...it will then fire right up afterwords...again this dosent happen at every stop, but it is getting annoying...i think the butterfly may be going closed all the way...i have heard of drilling a small hole in the butterfly...can anyone suggest anything or HELP!

 

[IMPORTSMOKER]

help.

 

[Raginstang]

there are a few things you can do to fix this. I had the same problem. my cure was just to adjust the throttle blade set screw on the throttle body. this allows more air at idle. also you could have a bad or dirty IAC motor. it is on the throttle body. you can take it off and clean it out with brake cleaner. third , you may have a vacuum leak after all the mods you added. hope this helps. any questions just post again. Mike

 

[89CopCoupe]

I 2nd that. Drilling a small hole in the tb sometimes is the cure, but I'd use that as a last resort. Usually when you do upgrades like yours it is necessary to reset the idle speed with the adjustment screw on the tb (assuming the IAC is clean). Later.

 

[88stangmangt]

if you didnt touch the cam you should need more air at idle.................bad TPS or IAC...............or out of adjustment throttle body screw...........

 

[bluecollar]

my car did the same thing, pissed me off for a long time. then i did like the one guy said and adjusted the idle stop screw. but of coarse that messes up the tps setting at idle. so i put it back to where it was and got a idle adjustment plate from the local ford dealer. it goes between thetheottle body and the iac. it has set screws in it to let some air bypass the iac. works like a champ no more surging idle problems either.