How to Fix the Electronic Throttle Control 5.7L Hemi?

What could be the worst possible nightmare for a vehicle driver? It could be their gas or fuel running out, their gear got stuck on a particular gear, or their Electronic Throttle Control failing.

It’s inevitable to learn about how to fix the Electronic Throttle Control 5.7L Hemi. There is a warning light in the ETC that shows on the car’s dashboard that there is an issue with your car’s engine. 

Before you know how to fix the Electronic Throttle Control on a 5.7L Hemi, you’ll be needing some tools before you start with the fixing. A faulty ETC can even harm your car’s engine severely. That’s why you’ve more reason to fix or replace it as soon as possible.

What works an Electronic Throttle Control do?

The ETC is a technology that replaces the interconnection between the mechanical pedals to the electronic throttle. It gathers the information from the mechanical pedal’s sensors and then alters the electronic throttle correspondingly.

When you are accelerating with your vehicle, the Electronic Throttle Control collects a signal from the pedal’s sensors and uses that information to regulate how far the throttle needs to be opened up. The ETC determines how far a 5.7L Hemi truck can accelerate.

A Step-by-step guide to fixing the Electronic Throttle Control 5.7L Hemi

It’s about time we should get down to the business and show you what you came here for. The procedure to fix your car’s 5.7L Hemi ETC is briefly shown below.

Fixing the Electronic Throttle Control 5.7L Hemi Infographic

Cleaning the throttle body

Sometimes, the ETC will be fixed if you just clean up the throttle body. It’s because dust and dirt might clog up in your throttle body which will cause malfunction of the engine and it will lead to engine misfiring and reduction in power.

So, the first step for you is to clean up the throttle body. You should clean your throttle in a place where you can get enough airflow. This way, it won’t hamper the ignition chamber of your car. You can also go to a near automobile service to clean up the throttle body.

Changing the hose

The hose plays an important role for ETC to operate. The electronic throttle sensors need this hose to fully read the sensors’ data. If there is any leak in the throttle’s body, the air won’t pass through the throttle anymore. 

That’s why you need to replace the hose that connects the ETC to the engine to make the ETC work properly and it will help the engine to perform better. The best hose for the ETC system would be the ones that are engine heat resistant.

Resetting the throttle system

Before we proceed with this method, we’ll be needing a stopwatch. Firstly, you have to wait three seconds. During these three seconds, you cannot start the engine.

Then depress and release the mechanical pedal five times with a five-second interval between them. After you’ve done all the procedures mentioned above, you’ve to wait for seven to ten seconds before you start again.

Now, hold down the accelerator for ten seconds. The ETC engine light should start to flash now. The diagnostic test mode is being activated by doing this. Then, wait for 5 to 10 seconds after you release the throttle.

Once the time comes, hit the accelerator again for 10 seconds more. When you are done with all these procedures, the ETC light won’t be flashing anymore. But it would flash slowly after a few seconds. This way you will be able to reset the ETC system.

Starting the engine

Following all these steps, you are free to start the engine. If the ETC light is not flashing as it should be, then you’ve done one or two steps wrong or maybe the time management wasn’t followed as it should be. 

Start resetting the throttle system’s steps all over again and it should be fine if you follow all the steps correctly.

Identifying a bad electronic throttle body

A good driver should be aware of the things that let them know that something is wrong with their car. To be honest, it’s like being a doctor for automobiles. Well, if you didn’t know what are the symptoms that would let you know about a bad throttle body, then you are in luck as we will be describing it now.

Delaying the start

You can easily notice if there is a delay when you try to start your car. The delay while starting the car is most likely related to the engine. To be more specific here, it’s related to a bad throttle body. Mustered-up mud and dirt in the throttle might cause this sort of problem.

Misfiring Engine

When there’s incomplete combustion with the ignition chamber, the engine tends to misfire. To simplify it, let’s say, when the combination of air-fuel is mismatching, your engine can misfire sometimes.

A bad throttle can cause this problem by messing with the mixture of air fuel. When you try to start up the engine, you might notice little bumps to identify the misfire in your engine.

Power Reduction

The quickest method to identify a broken ETC is to examine how much power is being generated when you start the engine by hitting the pedal. If you see even a slight reduction in the power while hitting the pedal, you can confirm that something is wrong with your ETC and your car has a faulty throttle body.

Poor Fuel Economy

The usage of a car’s fuel is limited by the car’s system. To know whether you have poor fuel economy or not, you’ve to keep track of your gas mileage. Drive your car till it dried up completely to establish the miles per gallon on average for your car.

If it’s off the chart by 20% to 25%, then you have a throttle body that is clogged and it’s certainly hurting your car’s performance.

Final Words

We hope that you’ve learned how to fix the ETC 5.7L Hemi by now. If you don’t want to take the responsibility to fix it all on your own, you can always go to any automobile service center, where it might cost you up to 200 US dollars.

Anyway, all the best for fixing the ETC 5.7L Hemi and driving your car without any problems.

Leave a Comment

Written By

Photo of author

William Baldwin

This Is William Baldwin, The Founder & Managing Editor of this website. Me and my team share automotive tips, tricks, and news

Fact Checked And Mechanically Reviewed By


Talha Atta

Talha Atta, a Mechanical Engineer and experienced technical content writer and editor at with a passion for the automotive industry.