Question about 2004 Chevrolet Silverado 1500 Crew Cab
Information is needed on the Temperature and Humidity conditions in order to determine if this is an Icing problem in the Air Induction system from fresh air intake up to and including the throttle body. It seems that this condition is apparent only within the first half mile or less immediately after start up on my truck. This is considered relatively normal in Michigan where I live. Perhaps it is also a condition most noticeable only in the Spring or Fall when Gasoline is formulated differently. In Spring Winter formula Gasoline contains "Light Ends" to aid Cold Starting. In Fall the Gasoline is sometimes not formulated to coincide with the lower mean average temperature in your geographic area.
Many other things can influence this condition. Having a Clean Air Filter, good Spark Plugs as recommended by the manufacturer. Another often over looked item is the Fuel Filter. One more item which is very expensive is a partially clogged Catalytic Converter which causes excessive Back Pressure and also reduces performance noticeably. Even the Mass Airflow Sensor can be too cold. It is electrically Heated but takes a couple of minutes to warm up. As you can see, there are many possibilities which can affect "Cold Start Drive away". I have attempted to enlighten you in what to look for then check out the components and/or conditions apparent when this occurs.
Posted on Oct 04, 2008
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