Mechanics

CODE P0301, I CHANGED MY PLUGS, WIRES, AND COIL PACK ON CYLINDER 1 BUT IT STILL IDLES ROUGH AND AT ABOUT 500-700 RPM. WHERE IS CYLINDER 1 LOCATED

2005 Chevrolet Tahoe • 78,000 miles

I want to be sure I changed the right ignition coil and should I get the injectors cleaned too, so the idle goes back to normal
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BAMF23
September 11, 2011.



Yes, a PO301 is indicating a misfire in cylinder 1. You are correct. As far as the idle, cleaning the injectors COULD help, but there are a few things that could cause it. Check to make sure there are no vacuum leaks. Also, make sure the injector itself is working properly. I say that because I don't know how bad the misfire is.