IAC???????

S

sweet93hatch

New Member

Apr 21, 2004

57

0

0

May 9, 2004

#1

• May 9, 2004

• #1

As most of you know, I drive around with my IAC unplugged because of surging idle when plugged in. Well, I finally got around to putting a new one in from advance auto and no dice. As soon as I plugged it in, it idled right back up to 3000 rpms. Its crazy and its making me CRAZY. Any help appreciated as always. Happy mothers day to all those out there who have little future stang bangers.

 

HO93LX302

Founding Member

Jul 7, 2002

715

0

0

Naugatuck,CT

May 9, 2004

#2

• May 9, 2004

• #2

Do you know what your tps voltage is by any chance?? should be .9-.99 volts

 

S

sweet93hatch

New Member

Apr 21, 2004

57

0

0

May 9, 2004

#3

• May 9, 2004

• #3

How do you check that. I have a voltmeter, but where do you probe?

 

HyPer-50

Member

Jun 26, 2003

377

0

16

Woodstock, GA

May 9, 2004

#4

• May 9, 2004

• #4

If you unplug the IAC and the engine remains running, i believe that means you have a vacuum leak... Might wanna look into that..

 

HO93LX302

Founding Member

Jul 7, 2002

715

0

0

Naugatuck,CT

May 9, 2004

#5

• May 9, 2004

• #5

You could have a vac leak but also you can unplug the iac and the car will run if the throttle plate was open a bit.. just that it will be at a slightly higher rpm at idle

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

May 9, 2004

#6

• May 9, 2004

• #6

and with no IAC, there will be no accomodations for load (a/c, etc).

after hookin it back up, you might want to disconnect the battery, turn on the headlights, and then re-hook and run it. it might need to relearn some stuff (some computers like this, and some incorrigible ones dont care). worth a try, i think.
good luck.

 

S

sweet93hatch

New Member

Apr 21, 2004

57

0

0

May 9, 2004

#7

• May 9, 2004

• #7

I'm at my wits end with this deal. I've tried everything and nothing works. Am I losing out by leaving my IAC unplugged because I can't find anything wrong.

 

dvs bullet

New Member

Feb 20, 2004

326

0

0

Ontario, Canada

May 9, 2004

#8

• May 9, 2004

• #8

Do you have a vacuum gage? What is your vacuum pressure?

 

BlackVert

15 Year Member

Oct 3, 2003

5,589

9

98

Bethesda, MD

May 9, 2004

#9

• May 9, 2004

• #9

sweet93hatch said:

As most of you know, I drive around with my IAC unplugged because of surging idle when plugged in. Well, I finally got around to putting a new one in from advance auto and no dice. As soon as I plugged it in, it idled right back up to 3000 rpms. Its crazy and its making me CRAZY. Any help appreciated as always. Happy mothers day to all those out there who have little future stang bangers.

Click to expand...

maybe you have a short in the iac connector?

 

S

sweet93hatch

New Member

Apr 21, 2004

57

0

0

May 9, 2004

#10

• May 9, 2004

• #10

Does it hurt to run without it?

 

dvs bullet

New Member

Feb 20, 2004

326

0

0

Ontario, Canada

May 9, 2004

#11

• May 9, 2004

• #11

I don't know that it would hurt to run without, but you are definatly not benifiting from it being off. Check your vacuum and see what it is at, I had similar to the same prob, it's amazing how much a small vacuum leak can screw things up. Run your codes, mine gave a thermactor code all the time, the line leading to it were all broken up but patched.

 

S

sweet93hatch

New Member

Apr 21, 2004

57

0

0

May 9, 2004

#12

• May 9, 2004

• #12

I'll run codes tomorrow and see I come up with.