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'01 Cobra idle's too low

  • Thread starter Thread starter tfritz
  • Start date Start date Aug 5, 2006

tfritz

Founding Member
Sep 27, 2001
886
1
0
SoCal
Aug 5, 2006
#1
  • Aug 5, 2006
  • #1
Heya guys/gals!

Well I got a problem here. I started my car after going to the bank and all of a sudden the idle is low. It starts up with that automatic spike of rpm then when dropping to idle it goes to around only 2-400 rpm barely keeping the engine on then stalls. It started fine two times that day with no warning of anything wrong, then out of nowhere it will no longer idle at normal idle rpm and stalls.

I'm thinking ok...just adjust the idle right? But something concerns me on why it just decided to drop the idle. Also, when I adjust the idle...where do I start?
Appreciate any help, thanks!
 

5.0's 4 ever

The #1 Stunna
Founding Member
Jan 22, 2000
5,794
0
76
Orlando, FL
Aug 6, 2006
#2
  • Aug 6, 2006
  • #2
I would start with replacing your IAC (Idle Air Control valve), this is what controls the idle speed of the engine from the input of the pcm. When you replace it leave the negative terminal off for a little while to kill the keep alive memory, that way the pcm can relearn the new idle strategy with a properly functioning IAC valve.
 
M

mijon61

New Member
Jun 11, 2002
46
0
0
Toledo Ohio
Aug 6, 2006
#3
  • Aug 6, 2006
  • #3
I agree with the IAC. Did it to me, replaced it and no problemo.
 

tfritz

Founding Member
Sep 27, 2001
886
1
0
SoCal
Aug 14, 2006
#4
  • Aug 14, 2006
  • #4
Thanks. I'll check it out. My first thought was changing the fuel filter; it needs changing anyway. Is the IAC easy to obtain, install and cheap?
Thanks for the help.
 

5.0's 4 ever

The #1 Stunna
Founding Member
Jan 22, 2000
5,794
0
76
Orlando, FL
Aug 14, 2006
#5
  • Aug 14, 2006
  • #5
The IAC is bolted on the intake plenum cover near the throttle body. It has a 2 pin electrical connector at the bottom of it and its cylinder shaped.
A local ford dealership should have one, probably won't be cheap maybe around $100.
 
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