Rough Idle

**smkeater911** · 08-28-2008, 10:22 AM

Ok guys its me again. 98 Z28 LS1. As I had posted before my car has a rough idle when im at a stop while driving it. Once I give it gas it drives fine. It started doing this two days ago and has never had any problem like it before. If I start it in my garage and put it in gear or rev the rpms it runs fine. Once I put it in gear and drive down the road and come to a stop it starts to idle rough. I changed my fuel filter, pcv, and my IAT sensor. Its still doing it. So I guess its onto my o2 sims, o2 sensors, or my vehicle speed sensor. Any other ideas would be helpful. Its not leaking or blowing any smoke. The plugs have low miles on them. Thanks for any suggestions.

**third_shift|studios** · 08-28-2008, 10:33 AM

spark plug connections-check all your wires are in place. do you get any back fire?

**Y2KPewterSS** · 08-28-2008, 10:37 AM

http://www.ls1.com/forums/showthread.php?t=95726

**smkeater911** · 08-28-2008, 10:54 AM

No backfire. I cant see anything wrong with my wires or any vaccum leaks. Besides if those where the problems would it idle bad even when i start it in my garage. It only occurs once im driving the vehicle.

**konigandy6** · 08-28-2008, 12:07 PM

Originally Posted by smkeater911

No backfire. I cant see anything wrong with my wires or any vaccum leaks. Besides if those where the problems would it idle bad even when i start it in my garage. It only occurs once im driving the vehicle.

I think what pewter was trying to hint at, stick with your original thread that you started as opposed to opening a new one for the same thing.

Get the code read, start there.

**Y2KPewterSS** · 08-28-2008, 12:17 PM

Originally Posted by konigandy6

I think what pewter was trying to hint at, stick with your original thread that you started as opposed to opening a new one for the same thing.

Get the code read, start there.

You are a wise man Andy