A flashing examine engine irradiate is her Ford F150’s way of saying “I have a major problem, don’t overlook me”. Many of the time, that serious problem is a misfire. This flashing light must not it is in ignored. As soon as your engine is misfiring, the is dumping raw fuel right into the exhaust. This life fuel deserve to detonate, which reasons damage come the catalytic converter and the exhaust device itself.

You are watching: 2003 ford f150 service engine soon light flashing

There have the right to be other situations that can cause the check engine light to blink together well. It’s flashing come let you understand that if you keep driving the vehicle, you are going to destroy the catalytic converter and/or damages the engine in a meaningful way.


Blinking inspect Engine irradiate Diagnosis: Ford F150

There will constantly be trouble codes connected with the inspect engine irradiate blinking. These problem codes will be able to tell you wherein to start searching down the problem. Here are the most usual issues that end up causing the examine engine irradiate to flash. But, monitor the OBDII codes. A password scanner is cheap. Usage it to uncover out precisely why her vehicles computer decided to flash this light.

F150 examine Engine irradiate Flashing due to Ignition Issues

The ignition device is the most common reason that the check engine light will flash. The ignition system is composed of spark plugs, plug wires, and also the ignition coil packs (older vehicles have a distributer that has actually the same role as coil packs). These parts job-related in concert to ignite the fuel in the burning chamber at simply the right time.

There are other misfire associated codes together well, however those are the most usual ones.


Fuel system Issues

Keeping in psychic that any type of engine needs air, fuel, and also spark for ignition, her Ford F150’s fuel system deserve to often cause the engine to misfire. It have the right to run as well lean or rich. Alternatively, there may not be sufficient fuel for ideal combustion, or the fuel isn’t atomizing properly.

See more: How Is The Cost Of Modern Roadways Defrayed ? How Is The Cost Of Modern Roadways Defrayed

Other Issues: Flashing examine Engine Light- Ford F150

While a majority of the time, the flashing examine engine irradiate is going come be led to by a misfire regarded your F150’s ignition device or fuel system (as declared above), there space other issues that can cause it.

If you have VVT, it may be having actually issues. EGR- The EGR mechanism recycles burnt exhaust gasses back into the burning chamber. Crank/Cam Sensor- as soon as the camer or crank sensors are not being review by the ECM/PCM, it’s impossible to get the ignition time right. If you F150 does start at all, it’ll run rough. It could be a much more serious mechanical issue, such together as bend valve, poor lifter, etc….


We recommend the you don’t journey your automobile if at all feasible until you diagnose and also fix your F150’s flashing check engine light. Simply pretend that it’s letting you know that it’s walk to expense you method more money to settle the trouble if you keep driving it. If over there is anything that you would prefer to add, you re welcome feel free to leave a comment below. Great luck!