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Q:

Check engine light on 2001 Ford E-350

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
At 40 miles an pre hour the truck runs bad when it gets to 45 it runs fine
(1) Answer
Retrieve the trouble codes stored in the truck's computer to properly diagnose the problem.