Aleromod.com - View Single Post - Misfire under load

thegoat54 · 02-22-2014, 08:19 AM

Hi everyone.

I have a 2004 Alero with the 3400.

Getting a misfire under load. Notice it mostly when approaching a hill and trying to maintain speed.

It is getting worse, and yesterday it misfired to the point where to Check Engine Light was flashing. I can't get the engine to throw a code though to help me out.

I replaced the plugs a couple months ago, but not the wires. Those are original. I'm thinking the wires?

Any help is appreciated.

02-22-2014, 08:19 AM	#1
thegoat54 GX Member Join Date: Nov 2005 Posts: 39	Misfire under load - No codes Hi everyone. I have a 2004 Alero with the 3400. Getting a misfire under load. Notice it mostly when approaching a hill and trying to maintain speed. It is getting worse, and yesterday it misfired to the point where to Check Engine Light was flashing. I can't get the engine to throw a code though to help me out. I replaced the plugs a couple months ago, but not the wires. Those are original. I'm thinking the wires? Any help is appreciated.