check engine light after messing with IAC!!!

B0B · February 28th, 2007, 05:19 PM

ok, i read the topic about putting an IAC restrictor plate in to make the RPM's Drop faster. i made my own plate and put it in, with 9/32 sized holes and it definately worked. i went on a test drive and everything seemed fine. the rpm's drop faster and there isnt as much as a lag. after i got home i was screwing with my car and i unplugged the IAC plug while the car was running. now the check engine light is on. i tried shutting off my car, unhooking the battery, plugging the IAC back in, then starting it again but the light is still on. does anyone know what the problem might be?

HMUSN · February 28th, 2007, 05:21 PM

leave the battery unhooked for about 5-10 mins..
give the car time to reflash.

if that doesn't work it probably has to do with your new resrtictor plate

B0B · February 28th, 2007, 05:30 PM

ok thanks i'll try that. and i have a couple more questions while im at it..

1) if i got a tuner like an X-Cal 2 would tell me codes, like if the engine light was on?

2) is there an Off road H-pipe that will hook to my stock exhaust manifolds, that i can unbolt the upper section of it and put long tube headers on it later down the road? that question sounds kinda confusing but i think its understandable lol.

HMUSN · February 28th, 2007, 06:11 PM

yes an XCAL can read codes and soooo much more.

i'm not sure on the second question.

i know o/r h pipes DO hook right up but i don't think anyone makes 2 piece o/r pipes

B0B · February 28th, 2007, 06:34 PM

k thanks, oh and by the way the check engine light did turn off after letting it sit with the battery disconnected so its good to go now!

HMUSN · February 28th, 2007, 06:44 PM

i figured it would.

MustangMatt96GT · February 28th, 2007, 07:42 PM

And on that exhaust, Yes it is possible. At americanmuscle.com you can buy an off road h-pipe that is both shorty and normal length. I have looked into it and thought it was a great idea. I think its made by MAC but I am not forsure.

Here is the link for one for your car.

http://www.americanmuscle.com/9904gt...ad-h-pipe.html

February 28th, 2007, 05:19 PM	#1
B0B Hardcore Enthusiast 2001 Mustang GT the speed of smell Join Date: Dec 2006 Location: Milton, WA Posts: 1,236	check engine light after messing with IAC!!! ok, i read the topic about putting an IAC restrictor plate in to make the RPM's Drop faster. i made my own plate and put it in, with 9/32 sized holes and it definately worked. i went on a test drive and everything seemed fine. the rpm's drop faster and there isnt as much as a lag. after i got home i was screwing with my car and i unplugged the IAC plug while the car was running. now the check engine light is on. i tried shutting off my car, unhooking the battery, plugging the IAC back in, then starting it again but the light is still on. does anyone know what the problem might be? __________________ '01 GT P-1SC 383rwhp, 380rwtq moddedmustang's drunk story teller www.myspace.com/jeepwheelerbob

February 28th, 2007, 05:30 PM	#3
B0B Hardcore Enthusiast 2001 Mustang GT the speed of smell Join Date: Dec 2006 Location: Milton, WA Posts: 1,236	ok thanks i'll try that. and i have a couple more questions while im at it.. 1) if i got a tuner like an X-Cal 2 would tell me codes, like if the engine light was on? 2) is there an Off road H-pipe that will hook to my stock exhaust manifolds, that i can unbolt the upper section of it and put long tube headers on it later down the road? that question sounds kinda confusing but i think its understandable lol. __________________ '01 GT P-1SC 383rwhp, 380rwtq moddedmustang's drunk story teller www.myspace.com/jeepwheelerbob

February 28th, 2007, 06:34 PM	#5
B0B Hardcore Enthusiast 2001 Mustang GT the speed of smell Join Date: Dec 2006 Location: Milton, WA Posts: 1,236	k thanks, oh and by the way the check engine light did turn off after letting it sit with the battery disconnected so its good to go now! __________________ '01 GT P-1SC 383rwhp, 380rwtq moddedmustang's drunk story teller www.myspace.com/jeepwheelerbob

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February 28th, 2007, 07:42 PM	#7
MustangMatt96GT I Post Entirely Way Too Much 1996 Mustang GT 13.023@103.46 @ 5800 FT Join Date: Dec 2006 Location: Lakewood, CO Posts: 7,150	And on that exhaust, Yes it is possible. At americanmuscle.com you can buy an off road h-pipe that is both shorty and normal length. I have looked into it and thought it was a great idea. I think its made by MAC but I am not forsure. Here is the link for one for your car. http://www.americanmuscle.com/9904gt...ad-h-pipe.html

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