Symptom Chart

2021 Ford Expedition Platinum, RWDSECTION Symptom Chart
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2018 Lincoln Navigator, 2018 Lincoln MKZ, 2018 Lincoln MKX, 2018 Lincoln MKT, and 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Occurs During Symptom Category Number
Startup:  No start/Normal crank 1
Hard start/Long crank 2
Stall after start 3
Diesels/Runs on 4
Idle:  MIL 5
Stalls/Quits 6
Slow 7
Slow return 8
Rolling 9
Fast 10
Rough 11
Misses 12
Backfires 13
Acceleration:  Stalls/Quits 6
Misses 12
Bucks/Jerks 14
Backfires 13
Hesitation 15
Lack/Loss of power 16
Surge 17
Spark knock 18
Cooling system temperature 19
Poor fuel economy 20
Emissions compliance 21
Cruise:  Stalls/Quits 6
Misses 12
Bucks/Jerks 14
Backfires 13
Lack/Loss of power 16
Surge 17
Spark knock 18
Cooling system temperature 19
Poor fuel economy 20
Emissions compliance 21
Deceleration:  Stalls/Quits 6
Backfires 13
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.