What would cause my ignition fuse to keep blowing?

What would cause my ignition fuse to keep blowing?

If the fuse is now blowing immediately when you turn the ignition key it is a sign of a short in the system. It could have been a loose or frayed wire previously that has just gone completely bad. You’ll need a wiring diagram to begin checking.

What is PCM ACC fuse?

that fuse powers pcm fuel heater and some other things. when the fuse blows the pcm shuts down. causing it to not run. usually its the heater that is bad. it is located at the back driver side by the fuel pump.

How do I reset my powertrain control module?

Resetting the PCM on your vehicle will help to clear all codes from it after a problem is fixed.

1. Open the hood of the vehicle.
2. Disconnect the negative battery cable from the battery. Use a wrench to loosen the lock nut, and pull the cable off. This cuts the power to the PCM. Wait for five minutes.

How do you reprogram powertrain control module?

What is reprogram powertrain control module?

1. Open the hood of the vehicle.
2. Disconnect the negative battery cable from the battery. Use a wrench to loosen the lock nut, and pull the cable off. This cuts the power to the PCM. Wait for five minutes.

What causes powertrain control module failure?

PCMs typically fail for one of two reasons: voltage overloads (often due to a short in a solenoid or actuator circuit) or environmental factors (corrosion, thermal stress or vibration). If the shorted solenoid or actuator isn’t found and repaired, the voltage overload it creates may damage the replacement PCM, too.

What happens when the powertrain control module goes bad?

Engine Performance Issues If the ECM has any issues, it may throw off the timing and fuel settings of the engine, which can negatively affect performance. A faulty ECM may cause the vehicle to experience a reduction in fuel efficiency, power, acceleration.

How do I reset my Chevy ECM?

How do I reprogram my GM ECM?

1. Remove the nut from the negative battery cable using a socket set or wrench. Slide the cable off of the battery and set it aside.
2. Turn the headlight switch to the “On” position to drain the ECM of any remaining power. Wait at least 10 minutes, then turn it back to the “Off” position.

What would cause my ECM to go bad?

Corrosion and moisture Corrosion or damage due to moisture is one of the main reasons for ECM failure. Corrosion can enter the ECM through the wiring harness and moisture can enter by a failure in the seals in the ECM itself. This happens over a period of time (5 to 10 years) due to the ECMs exposure to the elements.

Does a new ECM have to be programmed?

Will A New ECM Need To Be Programmed? In case it does need to be replaced, know that a new ECM comes with a standard set of programs with pre-determined efficiency. Even if you’re installing a new ECM in your old vehicle, it doesn’t have to be reprogrammed to match its specifications.