David Jeffers
New member
When the truck is cold or sitting for a while and then you start the engine there is a engine flutter or shaking experience. This will last from anywere from 20 seconds to 1 minutes until the engine warms up it will starts to run smoothly. There is the engine light VSC lights are on the dash. They sometimes go out but most surley find them on again at a later time all the time while driving. Replaced all spark plugs and bought one new coil and went around substituting until I thought the problem coil was replaced and problem solved. But it came back after one day of lights out and engine running smoothly. Any ideas of what might be the issue. Six cylinder with 175,000 miles. When fluttering goes away the engine runs as smooth as it did when first bought. Limited Edition.
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