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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Bad IAC?

  • Thread starter Thread starter MY Cobra
  • Start date Start date Oct 18, 2004

MY Cobra

Member
Mar 22, 2004
308
0
17
Franklin NC
Oct 18, 2004
#1
  • Oct 18, 2004
  • #1
I know a lot of peopel talk about this i have searched threw and only found a few things here on the forums. Seems like my car has a weird idel. It will idel at about 1 then drop to around 800 then to like 750 then back up to 850 it is weird. So just wondering if that is normal i know the 1 k to 800 drop is normal but for the idel to move 100 rpms is kinda weird for me. TIA
 

Dan_Soprano

15 Year Member
May 7, 2003
7,410
53
129
Jacksonville, FL
Oct 18, 2004
#2
  • Oct 18, 2004
  • #2
MY Cobra said:
I know a lot of peopel talk about this i have searched threw and only found a few things here on the forums. Seems like my car has a weird idel. It will idel at about 1 then drop to around 800 then to like 750 then back up to 850 it is weird. So just wondering if that is normal i know the 1 k to 800 drop is normal but for the idel to move 100 rpms is kinda weird for me. TIA
Click to expand...
Yeah, sounds like a bad IAC or possible vacuum leak. try take off and cleaning the IAC with carb cleaner before you spend the money to replace it.
 

mity2

I like Pro3 and all I got was this crappy CT.
Jul 24, 2003
2,872
3
48
StateCollege PA
Oct 18, 2004
#3
  • Oct 18, 2004
  • #3
most likely IAC. mine just went, and it was doing what your discribing. Befor it went. So most likely, end of IAC is near.
Go to junk yard, and find junked crown vic with 4.6, and yank one out. thats what I did, and she is running like a champ
 
J

jbrown

New Member
Aug 5, 2003
393
0
0
Tallahassee, FL
Oct 18, 2004
#4
  • Oct 18, 2004
  • #4
clean the iac if that fixes the problem temporarily you can pick a new one up at napa for $50. When my iac went bad it wouldnt idle when cold unless I gave it gas.
 
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