Idle Surges when In Park???

joshheat25

Member

Nov 8, 2004

871

0

16

Delaware

Feb 22, 2007

#1

• Feb 22, 2007

• #1

I just bought a New IAC. My car after I drive it and its Hot. While sitting in park it will idle at about 800 then it slows down to about 400-500 and acts like its going to shut off. Then bounces back up to 800. It only does this when hot. I dunno I am not throwing any codes or anything any ideas???

 

joshheat25

Member

Nov 8, 2004

871

0

16

Delaware

Feb 22, 2007

#2

• Feb 22, 2007

• #2

Anyone with any Idea?

 

LaserRed01GT

Banned

Oct 3, 2006

739

3

0

Clearwater, FL

Feb 22, 2007

#3

• Feb 22, 2007

• #3

Could just be that you need to clean the MAF. Another common problem of inconsistent idle issues is vacuum leaks. Do you have the ability to datalog or scan?

 

the98stang

Active Member

Aug 12, 2005

2,408

0

47

Clovis, CA

Feb 22, 2007

#4

• Feb 22, 2007

• #4

You might have gotten a bad IAC. Did you buy a motorcraft one?

 

joshheat25

Member

Nov 8, 2004

871

0

16

Delaware

Feb 23, 2007

#5

• Feb 23, 2007

• #5

Yes! I bought a motocraft one! I think it's a vacuum Leak.. I dunno I am going to have to check somewhere I guess