car dying in nuetral

[erichoff1]

I have 2001 mustang gt 4.6L dohc 5spd the problem is it revs up and down in nuetral and will die than i replace iac valve and did nothing for me i also thought it could be vacuum leak but can not locate the leak no smoke machine available i was wondering what your guys input is and if it could be something else

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[Mustang3GT07]

Try cleaning your TB and MAF.

Where at in IL are you?

[erichoff1]

st charles are you in il also. I did just clean the tb but not maf i will try that can you use any electrical cleaning spray or is there a certain brand i should use

[Mustang3GT07]

I'm on the south side of Chicago (alsip), about 15min away from the city.

I believe this is the stuff I used before:

http://www.autozone.com/autozone/cat...+Cleaner+Dryer

[erichoff1]

ok thanks for the advice ill let you know how it goes if by chance it does not work do you think vacuum leak would be the next best bet i just do not want to rush into pay some one 100$ to smoke it for me seems like such a simple job to make so much money on and all the places around here say that is about what they charge

[Mustang3GT07]

Their could be a vacuum leak. Do you have any mods on your car?

[erichoff1]

many of them
-4.6 dual overhead cam forged motor 30,000miles
-BBK long tube headers
-BBK x pipe
-Dynomax Mufflers
-Short throw shifter
-K&N air intake
-Trick flow intake manifold
-aeromative competition fuel kit (fuel rails, injectors, steel braided fuel lines)
-summit coil on plugs
-ford racing a/c eliminator pulley
-ford racing GT40 rims
-ford racing radiator
-ford racing lowering springs
-ford racing aluminum driveshaft
-3.73 rear differential gears
-adjustable steeda suspension
-steeda subframe connectors
-steeda adjustable clutch cable
-stage 3 clutch
-adjustable heavy duty clutch quadrant
-2003 cobra front bumper
-bmw side mirrors
-shaved spoiler
thats the majority of them i know i am missing some tho just waiting to pay off the car so i can put a supercharger in there motor was custom built to handle 800hp so can not wait till i can get that kind of power in there right now it dynoed at 323hp at motor 293@wheels and i think it was 320ftlbs

what about you

[Mustang3GT07]

^^Very nice!!!!

-k&n intake
-bf 2.76 sc pulley
-bf idler
-arh longtubes
-arh o/r x
-steeda catback
-sct sf3
-diablosport mafia
-dyno tune
-ngk tr6 plugs
-h&R sport springs
-mm cc plates
-mm fl subframes
-mm strut tower bar
-mgw short throw

I believe that's it, might be missing something and my numbers are in my sig

[erichoff1]

thats very impressive nice car i can not wait till i have that kind of horsepower

[Mustang3GT07]

Thanks!

Since you got a nice built block I say you should go turbo instead of supercharger. I'm tossing around the idea of either whipple or twin turbo's