How to Fix the Electronic Throttle Control 5.7L Hemi

For any car owner, engine problems can be your worst nightmare. However unavoidable, you should always be on alert to check the Electronic Throttle Control warning light. This warning light appears on the dashboard in case of a problem.

The ETC is essential as it ensures the proper balance of air pressure in your car’s engine. Therefore, it’s imperative to understand this important engine part more if your truck comes with a 5.7 Hemi.

This article will teach you the symptoms of a wrong throttle body, causes, and how to fix the ETC 5.7L Hemi. Please read it to the end since you never know when you will need the complete information on this problem. However, let’s start by defining the ETC.

What is an Electronic Throttle Control(ETC)

Electronic Throttle Control is a vehicle technology that electronically replaces the mechanical linkage of accelerator pedals to the throttle. It collects information from the pedal sensors and adjusts the throttle accordingly.

When accelerating, the ETC receives a signal from the sensor and uses it to determine how far to open up the throttle. This system is responsible for how far your truck accelerates. It controls how far you can push the pedal and let enough air in the engine.

What are the symptoms of a bad throttle body?

When your throttle body starts to develop problems, some symptoms show up. These include:

ETC danger indicator

ETC danger indication will be among the first symptoms you will notice when the system develops a problem. However, note that the warning sign won’t happen most of the time. Sometimes, it might be late by the time it appears. So, it’s essential to know the other signs.

Slow acceleration

If you find yourself in a position where you can’t get out of an idle state, know that your throttle body might be developing problems. At that point, the system is limiting the airspeed entering the engine.

Even though you can still accelerate by applying more pressure on the pedal, you shouldn’t take this sign lightly. The engine can eventually stop if you force it.

Poor idling system

A poor idling system is also a sign of throttle body problems. Since this system is computerized, if the throttle body fails, the computer takes over and interrupts valve movements to curb further engine damage. The engine will have poor idling.

For surety, you should check with the OBD2 codes. You should also check the muffler, speed sensor, and ETC system.

Less power

When the throttle body develops a problem, it will affect the amount of air getting into the engine. As a result, the engine will create less power and end up with less mileage. In some instances, the gear may freeze on the second The system does all these to mitigate further damage. The best you can do is get it fixed.

Engine stoppage

Should you happen to push the engine further with a malfunctioning throttle body, the engine will stop. In severe cases, the pedal will stop working. When the whole system fails, the engine can turn off or decelerate on its own. At this point, you will be in danger and should promptly fix it.

Causes of a Bad Electronic Throttle System

The following are some of the common causes of ETC malfunction:

  1. Vacuum or air filter leakage
  2. Loose sensor or electrical connections
  3. Damage to the ETC system
  4. Rust on the throttle body

How to Fix the Electronic Throttle Control 5.7L Hemi

When it comes to fixing the ETC 5.7 L Hemi, there are four to do it. Note that methods apply in all engines.

Most effective ways to fix the Electronic Throttle Control 5.7L Hemi

  1. Cleaning the throttle body
  2. Changing the hose
  3. Resetting the throttle system
  4. Replacing the throttle system

Step by step process of fixing Electronic Throttle Control 5.7L Hemi

Step 1: Locate the throttle control part

You will first open the engine hood and locate the throttle control part. You will find it on top of the car engine, where it connects the air filter.

Step 2: Unbolt and remove the throttle part cover

Using a screwdriver, you will unbolt the system and removeth the part cover. Take caution while doing this; otherwise, you will end up further damaging other essential car parts.

Step 3: Disconnect the electrical connection and nuts

After removing the cover, you should remove the throttle body; however, disconnect the electric connections first. You will find the connection on the left side of the throttle body.

Step4: Connect the new throttle body system

Armed with your new throttle body, set it in the gas kit. You will then reassemble the system as you found it when disconnecting. After you are done, reconnect the electric connection the reinforce it with the hose pipes.

When completed, start the engine to confirm if you got everything right. If you did it right, you must reset the warning lights and the fault codes.

How do you reset the throttle body on a 5.7 Hemi?

In this equally essential process, you should get the timing right.

  1. You will first turn the ignition on without starting the engine.
  2. Patiently wait for about 3 seconds before pressing and releasing the pedal in intervals of 5 seconds.
  3. You will wait for ten more seconds, then press the pedal for 10 seconds. At this point, the engine light should start blinking. The blinking is a notification of the start of Diagnostic Test Mode II.
  4. Release the pedal and wait for another 10 seconds. After the time elapses, step on the accelerator. At this stage,th engine light should slowly blink. The slow blinking indicates Erasing ECU Memory process.
  5. You will then release the accelerator and turn th ignition off. You will have reset the throttle body.


Although we have thoroughly discussed how to assemble and replace the throttle body, you may also need some additional details.

Here are several possible follow-up inquiries to your answers:

How much does it cost to fix the electronic throttle control?

The throttle control system itself costs no more than $200. The cheapest ones can be found for as little as $100 or sometimes less.

You won’t have to spend any money if you fix the ETC yourself.

Depending on the extent of the injury, the cost of sending it to a repair shop can range from $50 to $300 or more.

Should I take my Dodge RAM to a shop?

Have you tried the different techniques we have shown above? If not, try them first – are they all out of work? Then try manually replacing the ETC.

If you can’t do that, taking the vehicle to a repair shop is the safest option.

Be aware that most shops may charge you more than if you repair it yourself. Please consider this before making a judgment call.


An ETC problem is out of your control; however, it places you in danger if you ignore the initial warning signs you have read in this article. It would be best to fix it using this guide the first time you notice the warning sign on the dash. Should you find difficulty in replacing the system, seek professional services.


Hi, I'm the initiator and writer of this blog. Cars were and will be my first love, and my favorite hobby, that's why I decided to start this blog and write about my discoveries and techniques to improve my cars or repair them.