Control Harness Wires?

[Chevy_Lover31]

Hey Guy's,
Chevy's_Lover her with some question about my Track. I have an 2006 Chevy Tahoe it's started misfiring & barely want to go, It moves but it just feel like i have to press the gas all the way down to go faster IDK (low power, i guess) but my question is what is a control harness wires and is there more than one? and can that give a misfire?


Thanks In Advance......

 

[jaywoo65]

I'd go somewhere and have a scanner hooked up to see where your misfire is coming from. One cylinder or multiple? If it's one it's probably something simple like a bad coil pack, plug wire or plug. If it's more than one cylinder you might have a variety of other issues going on that it telling the pcm to fire the spark plug when it really isn't supposed to fire.

 

[Chevy_Lover31]

I'd go somewhere and have a scanner hooked up to see where your misfire is coming from. One cylinder or multiple? If it's one it's probably something simple like a bad coil pack, plug wire or plug. If it's more than one cylinder you might have a variety of other issues going on that it telling the pcm to fire the spark plug when it really isn't supposed to fire.

I had already had a lot of things changes here are some---> all 8 Coil packs, all 8 wires , all 8 spark plug, the computer system re-programs, fuel injector cleaned out, 02 sensors front and back, Crank Shaft, i just dont know but it has a control harness message with the scan tool.

 

[cmc76]

i had a symptom like that, but i had a code. I had an injector go bad.

 

[rockola1971]

What code number was it? P0XXX

 

[cmc76]

i believe it was P0200

 

[rockola1971]

P0200 is an injector circuit malfunction. The problem could be at the PCM or the wiring harness to the fuel injectors or an injector(s). Any mechanice worth his salt should be able to tell you whether its the wiring harness or injector(s) within 30 mins.

60% its the wiring harness 29% chance its an injector(s) 1% its the PCM.

Watch this video on how to troubleshoot it. Let us know how it turns out.