Incorrect starter relay can cause poor running/low fuel economy on Lincoln Aviator

If you experience poor running and low fuel economy after the starter has been repaired, it could indicate that an incorrect starter relay was used. A diode-suppressed starter relay may be needed.
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Average mileage: 82,000 (82,000–82,000)
3 model years affected: 2003, 2004, 2005
4 people reported this problem
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problem details
2004 Lincoln Aviator 82,000 mi,
Getting less than 13 miles/gallon til starter was looked at