What do the codes mean on a Mustang?

The code refers to the fifth character of the car’s VIN (vehicle identification number), and denotes the engine the car was fitted with when it left the factory. The most common are C and A, both of which refer to the 289 cu in (4.7-litre) V8 engine with either a two- or four-barrel carburettor.

How do I know if I have a GTS Mustang?

Factory original GTSs will have the “Mustang GT” logo embossed on the rear bumper cover, as is the case on standard GTs, and “Mustang GT” badging on the front fenders. Inside, the Mustang GTS shared the same interior features as the base V6 Mustang.

What is a Ford Koer test?

KOER stands for “Key On Engine Running” and performed with engine running at normal operating temperature. This test can detect most of the fault conditions as long as they are present on the vehicle at the moment of test.

What does K-code mean on early Mustangs?

Why was it called “K-Code?” The “K” stood for the engine code on the VIN number of these Mustangs. The K-Code engine was first introduced by Ford in 1963 and was featured in cars such as the Fairlane and the Comet. Each K-Code Mustang had a special badge on their front fenders that read “HIGH PERFORMANCE 289”.

What does GT on a Mustang mean?

gran turismo
GT stands for gran turismo, or “grand touring.” Although the Italian who originally thought up the term gran turismo, or GT, has been lost to history along with their reasoning, the definition was clear: A GT car fit between a sports car and a luxury car.

What is the difference between a Mustang GT and GTS?

Mustang GTS vs GT In terms of performance equipment, the GTS and GT were identical. The specs for these two 1995 Mustang models are basically identical. As far as the exterior, the Mustang GTS is distinguished by the features that are not present, such as the absence of fog lamps and rear decklid spoiler.

How much is a Mustang worth?

How Much Does the Ford Mustang Cost? The 2021 Ford Mustang starts at $27,155, which is about average for the sports car class. That price tag is for the base fastback (coupe) model; a base Mustang convertible starts at $32,655.

What does EEC-IV mean?

EEC-IV first appeared on the 1983 1.6L EFI, 2.3L High Swirl Combustion (HSC), 2.3L EFI Turbo and 2.8L truck engines. This was non-sequential EFI, meaning 1/4 of the required fuel for each cylinder was injected into the intake manifold, near the intake valve for each cylinder firing.

How do you clear EEC-IV codes?


  1. Run the Key On Engine Off Self Test using what ever method.
  2. When the Service Codes begin to be displayed, deactivate Self-Test (work quickly) and disconnect the jumper wire from the Self-Test connector.
  3. The continuous service codes will be erased from the processor’s memory.

What does code 111 mean?

key on engine off
Hello, on EEC IV vehicles, pre OBD-II, 111 means KOEO (key on engine off) passes, 10 means KOER (key on engine running) passes, and KOEC (key on engine continuous…or “memory” codes) are 223 and 224.

What is key on engine off?

Key on engine off or “KOEO” means the motor vehicle ignition position of key-on, engine-off. This may be denoted on some ignitions by a “run” position and is the key position just prior to holding the key in the “start” position to start the engine.

Where are the trouble codes on a fox body Mustang?

The large connector contains the self test output (STO) and ground (SIG RTN). The small pigtail is the self test input (STI). You can easily grab your trouble codes, and this will help you diagnose your MIL or “Check engine ” light on that fox body Mustang of yours! Note: Make sure your engine is warmed up before doing these tests.

Where is the EEC on a fox mustang?

The fox Mustang’s EEC IV computer has two connectors for self-testing and located on the driver-side firewall. The large connector contains the self test output (STO) and ground (SIG RTN). The small pigtail is the self test input (STI).

Can you count check engine light on 89-93 Mustang?

Using The Check-Engine Light (89-93 Mustangs) The 89-93 Mustangs (and the 94-95’s as well as some ’88 MAF equipped Mustangs) will allow you to use a jump wire and count the check-engine light in the dash. The jump wire (I’d use spades on each end) would connect the STI (test input) with #2 pin on the connector, see below:

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