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please help my anoying problem w. IAC cleaning

  • Thread starter Thread starter fivespeedsteed
  • Start date Start date May 17, 2007

fivespeedsteed

20+ Year Stangneter
Oct 17, 2003
748
22
69
Richmond, VA
May 17, 2007
#1
  • May 17, 2007
  • #1
so almost every oil change i take my iac off and spray carb cleaner down in it and drain it and reinstall. along with the throttle body and mass air needles. this time i did all that and cleaned my K&N. i put the oil on and let it sit for about 10 minutes before putting it in and going to get my haircut. its doing the same thing it did last time.

last time i did this it had this problem too. it has a lope in the idle, check engine light is on, and when you unplug the IAC it idles smoothly. when you plug it in it goes back to a lopey idle. the last time this happened i was at my friends house whose dad owns the body shop my car was painted in. he came out and took the t-body butterfly and just reved it all over the place for about 30 sec.s or so and it cleared out and did just fine. light went off idle back to smooth. hmmm

this time ive been beating the crap out of it revving it. ive unhooked the air filter and felt the tract behind it and theres no moisture from the airfilter (thought this was too wet at first)

what causes this problem. is there a puddle of carb cleaner sitting in the IAC i need to get out? how can i do this?
 

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
May 17, 2007
#2
  • May 17, 2007
  • #2
You need to pull the diagnostic codes...

I'm not sure what you could have done to cause the poor idling, but the engine diagnostic codes will help narrow it down.

Let us know what codes you get...
jason
 

fivespeedsteed

20+ Year Stangneter
Oct 17, 2003
748
22
69
Richmond, VA
May 18, 2007
#3
  • May 18, 2007
  • #3
wouldnt it be the iac if it goes normal when unplugged, and then normal and light off if you clear it out? this has happened before...
 

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
May 18, 2007
#4
  • May 18, 2007
  • #4
fivespeedsteed said:
wouldnt it be the iac if it goes normal when unplugged, and then normal and light off if you clear it out? this has happened before...
Click to expand...

If you are going to work on that hunch, then just go buy a new one.

Other wise take the time to check into some other things AND pull the codes.
If you haven't pulled the codes, then your just pissing in the wind.

good luck,
jason
 

Foxfan88

My Grandpa has great wood.
Sep 13, 2004
2,487
4
0
Miami, Ok
May 18, 2007
#5
  • May 18, 2007
  • #5
ive always heard if you soak the filter with too much red oil from the K&N cleaning kit, it the engine will suck it up and get stuck on the MAF wires and jack with your car.

or you could have used to much carb cleaner. you could take the IAC back off, take the IAC apart, just 2 screws, take some compressed air and blow it out.
 

Paul Perreca

New Member
Mar 30, 2005
1,085
0
0
May 18, 2007
#6
  • May 18, 2007
  • #6
try unhooking hte battery cables for a few minutes and hooking them back up, maybe your light will go out and the idle will smooth out - this stupid little trick works some crazy wonders - i beleive it clears the computer out and the computer has to relocate the problems, and maybe it is faultly locating a IAC problem -
 
I

iwashmycar

20+ Year Stangneter
Apr 7, 2004
1,236
1
39
Columbus, Ohio
May 18, 2007
#7
  • May 18, 2007
  • #7
i'd just buy a new one personally
 

Fett

New Member
Nov 2, 2004
766
6
0
May 18, 2007
#8
  • May 18, 2007
  • #8
Did you spray any lube in the IAC after cleaning it? Silicone spray works fine. I have seen more people make things worse by cleaning out their IAC.
 

fivespeedsteed

20+ Year Stangneter
Oct 17, 2003
748
22
69
Richmond, VA
May 18, 2007
#9
  • May 18, 2007
  • #9
so my friend pointed out that my MAF sensor wasnt plugged in. thats what being in a rush gets you im guessing. sorry guys. the compressor trick is a good one, and next time ill try that oil in the IAC thing. thanks guys.
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
May 19, 2007
#10
  • May 19, 2007
  • #10
Jason's opening thought would have found this for you quite quickly (codes). Just something to remember for next time (I myself have forgotten to plug crap back in).

Good luck.
 
T

TheUser

Active Member
Jul 25, 2003
1,859
1
36
Springfield, MO
May 19, 2007
#11
  • May 19, 2007
  • #11
I'm pretty sure you're not supposed to clean the MAF or TB with carb cleaner. There is a special electrical parts cleaner for the MAF and throttle body cleaner for the throttle body...I use the TB cleaner on the IAC too. I don't know exactly what carb cleaner does to the TB, but I think it's bad for the metal. I know lots of people use carb cleaner, but that doesn't mean that's the best thing.
 

fivespeedsteed

20+ Year Stangneter
Oct 17, 2003
748
22
69
Richmond, VA
May 19, 2007
#12
  • May 19, 2007
  • #12
oh okay, then can i get tb cleaner at advance auto?
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
May 19, 2007
#13
  • May 19, 2007
  • #13
Carb cleaner removes the Teflon coating. Apparently it can remove the warning sticker too.

You can indeed get TB cleaner at any auto parts stores and some Wallymarts IIRC

Good luck.
 
D

DRock9

New Member
Aug 22, 2006
359
0
0
May 20, 2007
#14
  • May 20, 2007
  • #14
So your car is supposed to idle when you unplug the IAC? Mine just dies...?
 

dragnazz5.0

My "0" key d0esn't w0rk, s0 I have t0 use the zer0
Nov 19, 2005
815
5
18
mooresville, nc
May 20, 2007
#15
  • May 20, 2007
  • #15
HISSIN50 said:
Carb cleaner removes the Teflon coating. Apparently it can remove the warning sticker too.

You can indeed get TB cleaner at any auto parts stores and some Wallymarts IIRC

Good luck.
Click to expand...

i wasnt aware that they used a teflon coating back in the 90s. i thought that was a newer thing.
 

ryan218

In just 10 years, I'll be old enough to drive!!!!
Dec 28, 2005
0
1
38
columbus ohio
May 20, 2007
#16
  • May 20, 2007
  • #16
buy a new one...mine had a loping idle...sounded like it had a cam in it...but ran like crap...replaced mine it idles 100 times better...and now it wont die if its sitting on idle for more then 10 seconds...

its was like 52 bucks or something like that...
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
May 20, 2007
#17
  • May 20, 2007
  • #17
Dragnazz, I don't know but I have a warning sticker on mine.
 
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