Can the throttle body brake or get damaged by opening flywheel while the battery is still connected?
The a stutter when first trying to start and then when started it stalls out and idles wrong
My car has 240000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there:
One of the most important safety regulations any mechanic follows is to remove the battery power before working on any engine component. In your question, you asked if it’s possible for the throttle body to be damaged Please refer to step #1 in this article if you disconnect the flywheel without removing the battery; (if i’m interpreting the question correctly). The truth is that any of the electrical components on your 2005 Nissan Sentra could have been damaged if this occurred. If you’re having problems with your Nissan starting or running correctly, you should have a professional mechanic complete an electrical problems inspection so that they can determine what’s wrong and recommend the correct repairs.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Limp mode is a car security feature that activates when a fault is detected, reducing speed and switching off non-essential functions. It is triggered by abnormal signals from car components, such as faulty sensors, transmission issues, or low fluid levels.
One of the main causes of a malfunctioning throttle body is internal contamination. Due to the contamination accumulated in the throttle body, the throttle valve can no longer move properly, causing problems with the control of the air supply.
A throttle body is part of the air intake system that helps control the amount of air that gets into the engine. If the throttle body fails, the engine will not get the proper mixture of air and fuel and the engine may lose power.
Common symptoms
Throttle body and electronic throttle body issues can result in the engine stalling, failing to start, warning lights on the instrument cluster, and hesitation or power surging on acceleration.
The MAF sensor regulates the air-fuel mixture in the engine and might become dirty. The dirt on the sensor sends wrong values to the control unit, and the limp mode is activated.
The computer may have run out of the battery power used to store important information. If this isn`t computing correctly, the engine will sense a problem and trigger limp mode.
The throttle body plays a large role in controlling the fuel and air mixture in your engine. The proper mixture needs to be achieved in order for your engine to run smoothly and properly. Once this part fails, it needs replacing rather than repairing.
A throttle response controller can help your car`s engine respond more quickly to your input, which can help you avoid accidents. You might be wondering if throttle controllers damage your engine or vehicle. The simple answer is no.
Common signs include lacking power when accelerating, rough or slow idle, stalling, inability to shift up, and the Check Engine Light coming on.
If the throttle body is stuck closed, commonly the vehicle will stall and die, or just not run at all. In cases where the wiring or throttle position sensor are faulty, then the vehicle may run, but suffer from misfires and run poorly.
While there is no set mileage when it comes to the lifespan of the throttle body, it is suggested that you give it a thorough cleaning at about 75,000 miles. Cleaning the throttle body allows your car to operate more smoothly and it helps increase its lifespan.
Filth, carbon, and dirt can build up in the housing creating problems with air flow. Known as coking, the normally smooth service for air to travel becomes full of gunk and creates an imbalance. This interrupts that perfect mixture of air and fuel which can cause the butterfly valve to get stuck.
This monitors the position of your foot on the pedal relative to how much fuel is introduced into the throttle body. When this is faulty, it can cause a jerking or hesitating effect as you describe.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Can the throttle body brake or get damaged by opening flywheel while the battery is still connected?
ANSWER : Hi there:
One of the most important safety regulations any mechanic follows is to remove the battery power before working on any engine component. In your question, you asked if it’s possible for the throttle body to be damaged Please refer to step #1 in this article if you disconnect the flywheel without removing the battery; (if i’m interpreting the question correctly). The truth is that any of the electrical components on your 2005 Nissan Sentra could have been damaged if this occurred. If you’re having problems with your Nissan starting or running correctly, you should have a professional mechanic complete an electrical problems inspection so that they can determine what’s wrong and recommend the correct repairs.
I have Chrysler 300c. Battery light came on, changed battery and alternator but power still getting drained and battery light still comes on.
ANSWER : Hi, thanks for writing in. This may be a sign of a failing starter relay. The starter relay is a small unit near the starter that directs power to the starter from the battery. When this fails, it may cause a clicking sound and will not allow the starter to engage the flywheel when you turn the key. I would suggest having a professional from YourMechanic come to your home to diagnose your starting issue to determine the solution to get you back on the road.
EPC light on 2004 Jetta. Code said brake switch faulty, but brakes lights worked. Replaced brake switch, now no brake lights.
ANSWER : Hi there. The first thing that pops in my mind beyond of what you have listed is perhaps the electrical harness attached to the brake switch. Perhaps the harness itself is damaged or you have an exposed wire, loose ground wire somewhere. You might want to have a professional mobile mechanic come to your location and complete a brake lights not working inspection to help you diagnose this issue.
Brake lights are not working. replaced brake light swtch still no brake lights. the third brake light the connection was melted at
ANSWER : The first thing to do is to repair third brake light and replace the brake light fuse and then see if the third brake lights work and the lower lights start working? If only the 3rd brake light starts working then you may need a further checks on the turn signal flasher or switch could be bad.
Low brake pedal and anti-lock brakes are not kicking in.
ANSWER : The brake pedal is working to stop the vehicle, but there may be air in the controller unit causing the ABS brakes to not function. I recommend bleeding the brake system from the farthest location from the master cylinder to the master cylinder including the ABS unit. If the brakes are still spongy after a full bleed, then the controller will need to be replaced. If you need further assistance with your brake pedal being spongy, then seek out a professional, such as one from Your Mechanic, to help you.
Is it bad when oil gets into the throttle body?
ANSWER : Hello,
I believe what you are describing is a problem with your PCV valve. A bit of oil in the throttle body is not going to harm your motor and is certainly not going to cause it to blow up. At an idle, the PCV valve restricts air flow, to reduce this problem. At high manifold vacuum (idle), a spring loaded valve is drawn up and partially restricts flow to the crankcase. The PCV system is relatively simple. An inlet hose connects to a filtered air source. This is used to supply clean air that is drawn through the engine. Most of the time this air is supplied through the engine air filter. On a few designs there is a separate inlet filter that cleans the incoming air for the PCV system only. This filtered air flows through the engine, picking up fumes and vapors. The air exits through another hose, connected to manifold vacuum. The flow of air draws fumes from the crankcase and burns them harmlessly in the engine. This also creates a slight vacuum, relieving any pressure that may build. Negative pressure helps to prevent oil leaks and oil consumption by the engine. The PCV valve also helps regulate the amount of air flow, which helps prevent oil being drawn out of the engine. When the PCV valve is not working correctly, this will cause an imbalance in air flow and vacuum causing the check engine light to come on. i would suggest having a professional from YourMechanic come to your location to take a look at your Jeep.
I believe what you are describing is a problem with your PCV valve. A bit of oil in the throttle body is not going to harm your motor and is certainly not going to cause it to blow up. At an idle, the PCV valve restricts air flow, to reduce this problem. At high manifold vacuum (idle), a spring loaded valve is drawn up and partially restricts flow to the crankcase. The PCV system is relatively simple. An inlet hose connects to a filtered air source. This is used to supply clean air that is drawn through the engine. Most of the time this air is supplied through the engine air filter. On a few designs there is a separate inlet filter that cleans the incoming air for the PCV system only. This filtered air flows through the engine, picking up fumes and vapors. The air exits through another hose, connected to manifold vacuum. The flow of air draws fumes from the crankcase and burns them harmlessly in the engine. This also creates a slight vacuum, relieving any pressure that may build. Negative pressure helps to prevent oil leaks and oil consumption by the engine. The PCV valve also helps regulate the amount of air flow, which helps prevent oil being drawn out of the engine. When the PCV valve is not working correctly, this will cause an imbalance in air flow and vacuum causing the check engine light to come on. i would suggest having a professional from YourMechanic come to your location to take a look at your Jeep.
When I put my foot on the brake my back left brake light goes off, when I take it off the brake the brake light comes on
ANSWER : I would suggest trying to disconnect and reconnect the wiring to the rear lights. I have seen these older Toyota vehicles rear lighting short out on the lights themselves due to the way the light circuit was made on the lamp housing. Look at the housing circuit on the light to see if one is touching another, and that could tell you why it is malfunctioning. There could also be a problem with the brake light switch. If you are not comfortable dealing with wires, I recommend getting in touch with a certified mechanic who can look at your brake light issue for you to see what’s going on.
I am upgrading my 2007 GT’s throttle body to a BBK 62mm throttle body.
ANSWER : Hello. The meter setting will depend on what BBK requires you to set the throttle body at. If the setting is voltage related then you need to set your meter to DC volts. That is usually what they recommend. If it is a resistance reading that they need you will set it to Ohm’s. If this is something that you would prefer to have done, consider YourMechanic, as a certified mechanic can come to your home to adjust this and insure a proper replacement of your throttle body.
