iac valve

Hey everyone, I have a 1999 Jeep TJ 6-cyl. About two years ago the PCM/ECM went out on my Jeep, I replaced it and got it back up and running but ever since then I have had to replace the Idle Air Control Valve every few months. Everything would be fine and suddenly it would just go out. Just...

I’ve been trying to chase down this weird low/rough idle issue for the past 2 months or so and I have checked everything else that could possibly cause this (except fuel pump) and everything checks out. Plugs look great, TPS has been replaced recently, IAC/TB has been cleaned several times (TB...

Per the excellent documentation, photos and great advice on this forum I was able to (halfway) clean the IAC valve and ole Fern was back up and running, for a week. Same problem came back like gangbusters. So I purchased a new IAC valve and installed, still having issues. Could NOT cleaning...

Got everything up and running finally after a long winter. Went for a drive in the morning and everything was running smoothly. Then in the afternoon went for a drive and within 1 mile started stalling (I have a 2002 Wrangler X 6cyl automatic). I was able to shut down and restart, but kept...

I have a 1999 Jeep TJ 4.0 5 speed. It has idled rough for a while now, it stays at around 800 rpms but it is not a consistent number. It bounces slightly and you can hear the difference as it does this as well, bouncing from around 775 to 850 rpms. It also sometimes has a hard time cranking and...

Hi all. Here's the story: I've only had my 2004 TJ for about a week or so. I purchased it used from a dealer, and overall it runs well. Drove it this morning, all was good. Several days ago, she did something weird: She whistled. Not a small whistle, oh no, but a large all out steam kettle...