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rough idle

  1. S

    Uneven Idle is getting progressively worse but cannot find the cause (Fuel Pump / Injectors?)

    Hey all, I drive a 2008 Chevrolet Avalanche (Body has 150k Miles Engine has 40k Miles...AFM sure is great) 6.0 L L76 V8 (gasoline) with a GM 4L60-E transmission. I have an issue where the truck's idle has been getting progressively worse over the last few months. Issue: When at a stop the idle...
  2. T

    2004 Avalanche Z71 4x4 Rough Idle/Stalls - Faulty Temperature Sensor

    I recently had a problem where my 2004 1500 Z71 (160K+ miles) would occasionally start running rough at low RPM (Idle) and then stall. It would restart and behave OK if it got up to cruising speed. Initially I suspected a possible problem with an oxygen sensor. Correlated with this condition...
  3. AvPilot321

    Rough running engine 2007 LTZ

    Hello folks, I'm dealing with a rough running engine in my 2007 5.3L LTZ that is driving me up the wall. The truck has no active, pending, or stored codes to give me an idea where to start. The engine runs really rough at idle, almost like a misfire, and seems to subside some when it warms up...