Low/mid rpm misfire

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01-26-2007, 12:34 PM

carguy2112

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Join Date: May 2006

Posts: 48

Low/mid rpm misfire

I hope you guys can help me out. When I'm cruising around (2-3k rpms) it has a pretty steady miss to it. If I give it any thing more than half throttle, it goes away. It's a 93 Formula LT1 with a hotcam. Its got a new opti, new plug wires, and new icm. I was thinking maybe plugs, but would the miss go away when I got on it if it was plugs?

Last edited by carguy2112; 01-26-2007 at 12:37 PM.

01-26-2007, 12:45 PM

2000GTP

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Join Date: Mar 2005

Location: Aurora, IL

Posts: 12,312

Its possible that the plugs may need to be changed. Another possiblity is th EGR system is malfunctioning.

02-21-2007, 02:01 PM

transAMdriv3r

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Join Date: Jan 2006

Location: the 570

Posts: 811

i just solved my problem with a missfire around 2-3k rpms with a new mass airflow sensor and new ac delco O2 sensors. I dont know which one fixed it though.