Still dropping

MSTGGT00 · April 29th, 2007, 02:25 PM

Forget to post this earlier. I did an oil change, and cleaned my Throttle Body and now my car doesn't quickly drop and rise (RPM Wise) at start like it use to.

But now, sometimes when I am at a light and come to a stop it'll drop a tiny bit, sometimes a little more. Also, sometimes when I put it back in gear it'll nearly stall.

Any ideas?

ChrisJ · April 29th, 2007, 02:40 PM

Theres a little gasket that someone made a post about on here that goes between your IAC and the Plenum...It is supposed to fix these issues...

MustangMatt96GT · April 29th, 2007, 02:48 PM

Also clean your IAC while you are at it!

lil666 · April 29th, 2007, 03:18 PM

or replace it.. it's cheap...$40...

zkid01 · April 29th, 2007, 05:10 PM

Did you get any cleaner on your MAS? cause if you did you need to wait tell it air drys... it can mess with allot of stuff. If that is dry then like Chris said there is a post about a little gasket that can cause this. Good Luck.

Timber · April 29th, 2007, 08:32 PM

Originally Posted by zkid01

Did you get any cleaner on your MAS? cause if you did you need to wait tell it air drys... it can mess with allot of stuff. If that is dry then like Chris said there is a post about a little gasket that can cause this. Good Luck.

Yeah, there's only one kind of cleaner that's safe for those sensors. I think it's called electrical contact cleaner...

energiesource · April 29th, 2007, 09:39 PM

My car does this and my IAC is absolutely spotless, so i dunno what it would be

02steedagt · April 29th, 2007, 10:46 PM

not sure exactly what you mean.... but in my car, when I get to a stop light, I'm usually about 950 rpms, and then after I stop and after a second or two, it drops to about 700-750.

Is this what yours is doing?? I just figured it was normal and not too serious.

energiesource · April 29th, 2007, 10:56 PM

yeah, mine does that, and it also seems like its going to stall sometimes, it'll go down to about 500 or less, it does it when im idleing anywhere and ill be cruising along and put it in neutral and the rpms will stay up there for quite a while, i figured they should go right down., but what do i know

ChrisJ · April 30th, 2007, 12:29 PM

Originally Posted by lil666

or replace it.. it's cheap...$40...

LOL...Where you buying yours at?

MSTGGT00 · May 3rd, 2007, 03:27 AM

Yeah like mentioned above, I get the drop to around 750 and it sounds like she is gonna stall, then she'll jump back to 950-1k and stay and be fine.

No idea ?! My IAC was cleaned with the proper cleaner and it is way dry... it's spotless....

ATLmustang · May 3rd, 2007, 07:41 AM

is there any way to adjust the driving idle?? sorry i dont mean to high jack i just have the same prob. and remember reading some where that on a tuner or a dyno tune that you could adjust the driving idle?

zkid01 · May 3rd, 2007, 08:06 AM

Is this happening on a auto or stick? I also found the post that ChrisJ was talking about above.. It deff. could be the problem that you are having. and idk were you are finding the IAC for $40, Cuase thats pretty low.. Oh yea and the post about your IAC is on the main page for the "how-to" section.

02steedagt · May 3rd, 2007, 11:13 PM

you can adjust the idle with a tuner.... i can do it on my diablo.

neckbonekat · May 4th, 2007, 02:55 AM

Originally Posted by 02steedagt

you can adjust the idle with a tuner.... i can do it on my diablo.

+1

April 29th, 2007, 02:40 PM	#2
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	Theres a little gasket that someone made a post about on here that goes between your IAC and the Plenum...It is supposed to fix these issues... __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

April 29th, 2007, 02:48 PM	#3
MustangMatt96GT Proud American 1996 Mustang GT Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,689 iTrader: 3 reviews	Also clean your IAC while you are at it! __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions 25.3 SFI Chassis Build Never Lift Racecars

April 29th, 2007, 03:18 PM	#4
lil666 Regular Join Date: Jan 2007 Location: Woosta, MA Posts: 162 iTrader: 0 reviews	or replace it.. it's cheap...$40... __________________ ______________________________ 1999 Mustang GT Convertible 2001 F150 Harley Edition 2004 R6

April 29th, 2007, 05:10 PM	#5
zkid01 Enthusiast Join Date: Apr 2007 Location: Pearl Harbor, HI Posts: 606 iTrader: 0 reviews	Did you get any cleaner on your MAS? cause if you did you need to wait tell it air drys... it can mess with allot of stuff. If that is dry then like Chris said there is a post about a little gasket that can cause this. Good Luck. __________________ Work Hard....Play Harder.

April 29th, 2007, 09:39 PM	#7
energiesource MM Fanatic Join Date: Oct 2006 Location: Up der in canada eh Posts: 3,527 iTrader: 1 reviews	My car does this and my IAC is absolutely spotless, so i dunno what it would be __________________ 2000 Mustang GT, 417hp/421tq, P1SC @ 6 psi(?), Custom grind cams, Steeda Triax shifter, SLP LM2, MAC L/T and O/R H-pipe. 18x9/10 Flat Black FR500's, Mach C-pillars, bullitt side scoops/skirts.

April 29th, 2007, 10:46 PM	#8
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634 iTrader: 0 reviews	not sure exactly what you mean.... but in my car, when I get to a stop light, I'm usually about 950 rpms, and then after I stop and after a second or two, it drops to about 700-750. Is this what yours is doing?? I just figured it was normal and not too serious. __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936

April 29th, 2007, 10:56 PM	#9
energiesource MM Fanatic Join Date: Oct 2006 Location: Up der in canada eh Posts: 3,527 iTrader: 1 reviews	yeah, mine does that, and it also seems like its going to stall sometimes, it'll go down to about 500 or less, it does it when im idleing anywhere and ill be cruising along and put it in neutral and the rpms will stay up there for quite a while, i figured they should go right down., but what do i know __________________ 2000 Mustang GT, 417hp/421tq, P1SC @ 6 psi(?), Custom grind cams, Steeda Triax shifter, SLP LM2, MAC L/T and O/R H-pipe. 18x9/10 Flat Black FR500's, Mach C-pillars, bullitt side scoops/skirts.

May 3rd, 2007, 07:41 AM	#12
ATLmustang Regular Join Date: Dec 2006 Location: Buford,GA Posts: 336 iTrader: 0 reviews	is there any way to adjust the driving idle?? sorry i dont mean to high jack i just have the same prob. and remember reading some where that on a tuner or a dyno tune that you could adjust the driving idle?

May 3rd, 2007, 08:06 AM	#13
zkid01 Enthusiast Join Date: Apr 2007 Location: Pearl Harbor, HI Posts: 606 iTrader: 0 reviews	Is this happening on a auto or stick? I also found the post that ChrisJ was talking about above.. It deff. could be the problem that you are having. and idk were you are finding the IAC for $40, Cuase thats pretty low.. Oh yea and the post about your IAC is on the main page for the "how-to" section. __________________ Work Hard....Play Harder.

May 3rd, 2007, 11:13 PM	#14
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634 iTrader: 0 reviews	you can adjust the idle with a tuner.... i can do it on my diablo. __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936

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