TSB 031404 — Ford and Lincoln Service bulletin

031404 is a service bulletin on file with NHTSA for 6 Ford and Lincoln models, 1996–2004 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. ENGINE MISFIRE OR RUNNING - COIL ON PLUG (COP) IGNITION SYSTEMS - WDS COP KIT DIAGNOSTIC TIPS. TO INCLUDE VARIOUS 2005 MODELS. * AR THIS ARTICLE 04161 SUPERSEDES TSB 03-14-04.

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
6Vehicles named
9Model years

Vehicles and model years 031404 names

VehicleModel years
Ford Crown Victoria 1998, 1999, 2000
Ford Expedition 1997, 1998, 1999, 2000, 2001, 2002
Ford F-150 1997, 1998, 1999
Ford Mustang 1998, 1999, 2000, 2001, 2002, 2003, 2004
Ford Taurus 1996, 1997, 1998, 1999
Lincoln Navigator 1998, 1999, 2000, 2001, 2002

Every document filed under 031404

Document IDFiledType
031404 August 23, 2004 Service bulletin

What 031404 covers

Engine — the component vocabulary NHTSA files this communication under.

← All Ford Crown Victoria TSB years TSB lookup by model

Questions buyers ask

What is TSB 031404?

031404 is a service bulletin filed with NHTSA by Ford and Lincoln, covering 6 Ford and Lincoln models across the 1996–2004 model years. NHTSA's summary reads: ENGINE MISFIRE OR RUNNING - COIL ON PLUG (COP) IGNITION SYSTEMS - WDS COP KIT DIAGNOSTIC TIPS. TO INCLUDE VARIOUS 2005 MODELS. * AR THIS ARTICLE 04161 SUPERSEDES TSB 03-14-04.

Which vehicles does 031404 cover?

NHTSA's file names Ford Crown Victoria (1998–2000); Ford Expedition (1997–2002); Ford F-150 (1997–1999); Ford Mustang (1998–2004); Ford Taurus (1996–1999); Lincoln Navigator (1998–2002). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB 031404 a recall, and is the repair free?

No. 031404 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of 031404?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 031404, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 031404. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.