Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Code - Position 4
The 8th number in VIN is the engine displacement and number of cylinders code. Description is as follows:
- A = 3.9L (DOHC), V8 EFI.
- L = 2.5L, EFI (DOHC), V6.
- P = 2.0L, EFI (SOHC) S.P.I., In-Line 4-Cylinder.
- R = 4.6L (DOHC), V8 EFI (Mach 1)
- S = 3.0L (DOHC), V6 EFI.
- U = 3.0L (OHV), V6 EFI.
- V = 4.6L (DOHC), V8 EFI.
- W = 4.6L (SOHC), V8 (Romeo) EFI, Gasoline.
- X = 4.6L (SOHC), V8 EFI.
- Y = 4.6L (DOHC), V8 S/C EFI (Cobra).
- Z = 2.3L (DOHC), In-Line 4-Cylinder EFI.
- 2 = 3.0L (OHV), V6 EFI, Flex-Fuel.
- 3 = 2.0L (DOHC), In-Line 4-Cylinder EFI (Zetec).
- 4 = 3.8L (OHV), V6 EFI.
- 5 = 2.0L (DOHC), In-Line 4-Cylinder EFI (Duratec).
- 9 = 4.6L (SOHC), V8 EFI, Natural Gas Vehicle (NGV).
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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.
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