The best way to determine the PCM Code or Strategy is by using an SCT programmer to read it. So we'll go over that first. • For the Livewire: Plug in the Livewire to the vehicle's OBD2 port, go to the Check Engine menu, scroll the wheel to Read Strategy. Press the wheel and turn key on when prompted. • For the X3/SF3: Plug in the X3/SF3 to the vehicle's OBD2 port, go to the Vehicle Info menu, once there select another vehicle info. Turn key on when prompted. • For the Old X3/SF3: (Serial Number's start with X3) Plug in the X3/SF3 to the vehicle's OBD2 port, go to Device Info, select Read Strategy. Turn key on when prompted. If you do not have a programmer yet, you'll need to find the PCM and read the sticker. You are looking for a combination of letters and numbers in Bold. Older vehicles will have 3 digits, while later vehicles will have 4 digits. In most 2000 and newer vehicles it will be on a small white sticker located in the passenger side door jam at the height of the dash. Older vehicles you will have to locate the actual PCM and read it off of a sticker on the PCM, the connector or the back of the computer. Here is a little guide to help you locate the PCM if needed. If it's not where it's listed here, check the same spot but on the opposite side of the car. If your vehicle is not listed here, and you find the location of your pcm... Be a pal and email it to me so I can update this page. Thanks!

Vehicle Year PCM Location Connector Location Bronco 1988-1995 Engine Compartment, Left Side Contour 1995-2003 Passenger Side, Under Dash Engine Compartment, Right Side Crown Vic 1988-2004 Driver Side, Under Dash Engine Compartment, Left Side Cougar 1989-1996 Passenger Side Kick Panel Cougar 1999-2002 Passenger Side, Under Dash Engine Compartment, Right Side Continental 1992-2004 Passenger Side, Under Dash Engine Compartment, Right Side Escort 1988-2003 Under Front Center Console Excursion 1999-2003 Under Dash, Driver Side Engine Compartment, Left Side Expedition 1997-2003 Under Dash, Passenger Side Engine Compartment, Right Side Explorer 1991-2003 Engine Compartment, Center F Series Truck 1992-1995 Engine Compartment, Left Side F Series Truck 1996-2004 Under Dash, Passenger Side Engine Compartment, Right Side F Series Truck 2004-2007 Passenger Side Firewall Passenger Side Firewall F Series Diesel 1994-1998 Engine Compartment, Left Side F Series Diesel 1999-2003 Under Dash, Drivers Side Engine Compartment, Left Side F Series Diesel 6.0 2003-2007 Engine Compartment, Under Battery Cover Focus 2000-2003 Behind Glove Box A Pillar Right Side Grand Marquis 1992-2004 Driver Side, Under Dash Engine Compartment, Left Side Marauder 2003-2004 Under Dash, Driver Side Engine Compartment, Left Side Mustang 1987-2004 Passenger Side Kick Panel Mustang 2005-2009 Passenger Side of Engine Near Front of Motor Mark VII 1986-1992 Passenger Side, Kick Panel Mark VIII 1993-1998 Driver Side, Under Dash Navigator 1997-2003 Under Dash, Passenger Side Engine Compartment, Right Side Probe 1993-1997 Under Center Console Ranger 1988-2003 Engine Compartment, Center Taurus 1988-1995 Behind Dash, Passenger Side Engine Compartment, Right Side Taurus 1996-2004 Engine Compartment, Right Side Tempo 1988-1994 Under Dash, Passenger Side Engine Compartment, Right Side Thunderbird 1987-1997 Passenger Side, Kick Panel Town Car 1992-2004 Under Dash, Driver Side Engine Compartment, Left Side Cherokee 1996-2004 Passenger Side, Midway Down, Use a light SRT4 2003-2005 Behind Passenger Side Head Light