2005 trailblazer idles high This could be caused by a few different thing's, a dirty throttle plate an bore, vacuum leaks, sensor problems etc... Having a scanner hooked up by a professional technician that knows what scan data to look at should be done.
Full Answer
What are some of the Chevy Trailblazer throttle body problems?
If your Chevy Trailblazer has a bad throttle body, it can cause it to run terribly. Common symptoms of a bad throttle body include, dirt and grime, the check engine light, and an erratic idle.
Can a bad throttle body cause a car to stall?
A bad throttle body may cause stalling in the vehicle, misfiring, electrical problems, high or poor idle, and improper throttle stop. Issues such as grime and dirt deposits or vacuum leaks can also cause problems to the throttle body. Below, you will find some further information about throttle body diagnostics.
How do you fix a throttle body problem?
Usually, a throttle body cleaning and a throttle body calibration with a diagnostic tool will solve this problem. The engine requires both adequate air and fuel supply to perform effectively.
What are the symptoms of a bad throttle body valve?
Signs of a Bad Throttle Body. A Bad Throttle Body Valve can cause a lot of different symptoms in your vehicle. Here is a list of the most common ones: If you notice your car’s engine stays between 500 to 100 RPM and the engine vibrates frequently, it may be due to a dirty throttle body.
What are the symptoms of a faulty throttle body?
7 Symptoms of a Bad or Failing Throttle BodyLack of Power. ... Issues while accelerating. ... Higher or Lower Idling. ... Dirt or Grime Build-up. ... Poor Mileage. ... Electrical Problems. ... Check Engine Light.
How do I know if my throttle body needs to be replaced?
The 7 Signs That Could Mean Your Throttle Body Needs CleaningGrime Build Up. ... Poor Fuel Economy. ... Poor or High Idle. ... Uneven or Slow Acceleration. ... Electrical Problems. ... Airflow Disruptions. ... Check Engine Light.
What happens when throttle body fails?
When a throttle body is not functioning correctly, you'll usually notice a distinctly poor or very low idle. If the problem is really severe, you might even begin stalling when coming to a stop or when the throttle is quickly pressed.
Will a clogged throttle body symptoms?
When the throttle body gets dirty, it has a direct effect on how smoothly the engine operates. Signs indicating a problem include rough idling, jumpy or sluggish acceleration, poor fuel economy, and stalling. With the use of a throttle body cleaning product, the dirt and debris buildup are easily removed.
How do you test a throttle body?
1:057:40How To Test The Electronic Throttle Body. GM Vehicles 2006-2011YouTubeStart of suggested clipEnd of suggested clipOne more thing the absolute best way to connect the multimeter test leads to the male terminals ofMoreOne more thing the absolute best way to connect the multimeter test leads to the male terminals of the throttle. Body is with jumper wires that have alligator clips on both ends.
What causes throttle body failure?
Possible causes of a malfunction 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.
How do you reset a throttle body?
Leave the key off for a moment, turn the key to the "On" position again, wait 3 seconds, and press the accelerator 5 times in 5 seconds. Wait 7 seconds, and hold the accelerator down. The check engine light should start blinking, continue to hold pedal down until it stops blinking. You can then start the car.
Can throttle body cause rough idle?
If your car runs rough when idling, the cause just might be a dirty throttle body. The throttle body controls the amount of air the engine takes in, and when it gets dirty, the engine can't idle smoothly.
Does cleaning throttle body make a difference?
Cleaning the throttle body makes a difference in car performance and drivability. It is a solution to anyone experiencing rough running of the engine, unstable running of the vehicle, and decreased vehicle performance when still brand new.
Will a dirty throttle body cause a misfire?
As we told you before, a bad throttle body can mess with the air-fuel mixture, and it can also cause your engine to misfire. Misfires are easiest recognized as small bumps when you are revving the engine.
Can a dirty throttle body cause shifting problems?
The throttle position sensor is used to control the amount of gas that goes into the engine and thereby determine engine load and control vehicle speed. If it fails, it can result in automatic transmission hard-shifting issues.
Can a dirty throttle body cause reduced engine power?
When the throttle body fails or becomes dirty, it can trigger Reduced Engine Power mode. One of the most common triggers is a problem with the electronic throttle actuator control (TAC) system. Modern GM vehicles use this layout in place of a traditional, mechanical throttle body and linkage.
dogwood32
Well 2002 will be port injected,so the throttle body only adjust air flow.Try cleaning Mass Air Flow Sensor and replacing your fuel filter.Make sure that your air filter is clean.If you havn't had a tune up in 100,000 miles then it's time.It could be the TPS ,but would try the others first.Well hope this helps,and good luck.
Anonymous
I would use Gumout and an old toothbrush, usually works good to get the carbon for the throttle plate and throttle body.
Anonymous
This P0507 code is one that's sometimes triggered on vehicles that have electronic throttle control. That is, they don't have a regular throttle cable from the accelerator pedal to the engine. They rely on sensors and electronics to control the throttle.
Why my 2004 trailblazer keeps dieing when i stop
IAC - idle air control motor , Vacuum leaks . Dirty throttle body . Videos on youtube for cleaning throttle body , IAC , and finding vacuum leaks .
Cle stalls when going to reverse to forward trailblazer 07 throttle body
I would check the idle control solenoid first. it is mounted near the throttle body or on it. When engine rpm drops it pushes the throttle open to keep it running. It also keeps idle up when switching on the a/c and can be used as a quick check for the solenoid.
Why does my trailblazer stall when using the defroster?
The throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean. Make sure to clean the front and back sides of the throttle body.
2004 trailblazer when i turn heat on truck vibrates and turns off. was told it could be a sensor but dont no where they are or which one
Time to clean throttle body, a dirty throttle body will cause low idle and stalling. Make sure to disconnect the battery during the cleaning process, this will reset the PCM (computer) so it can relearn to the cleaned throttle body.
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What happens if the throttle body is not properly air cooled?
If the engine is not receiving proper air supply due to a damaged throttle body, the engine will suffer , and as a result, the driver would experience a drop in performance.
What is a throttle body?
The throttle body is an important mechanical component found in fuel injected vehicles that controls and regulates the amount of air flowing into the engine. When the throttle body is in its appropriate condition, the engine receives an ideal air and fuel ratio and offers optimum performance. However, when the throttle body is damaged, ...
Why does my engine misfire?
Misfires occur either when the air-fuel mixture is very wrong or when it comes to a weak spark from the spark plug. It is incomplete combustion inside the combustion chamber, in other words. As we told you before, a bad throttle body can mess with the air-fuel mixture, and it can also cause your engine to misfire.
What is the function of a throttle body?
The throttle body’s core function is to regulate and control the amount of air allowed to enter the engine. The input data is sensed from the driver’s pressure on the accelerator pedal of the vehicle. Consequently, more fuel is allowed to enter the internal combustion engine ...
Why is my car slow when accelerating?
This means that a faulty throttle body can mess the air-fuel mixture up, which will cause problems when accelerating. If you notice that your car has a very uneven acceleration – sometimes it is fast and sometimes slow, you might have a bad throttle body.
How much does it cost to replace a throttle body?
The average throttle body replacement cost is between $250 and $650, depending on the car model and labor costs. The throttle body cost between $200 and $500, while the labor cost is around $50 and $150. The throttle body can be differently priced depending on different vehicles, models, and the manufacturing company.
How many throttle bodies are there in a car?
There is only one throttle body in most vehicles, with a rare exception of special, larger vehicles. The function of the throttle body is also dependent on other parts, such as the air filter.
What happens if you replace throttle body?
If you replace the throttle body, the PCM won’t know and will continue to use the adaptive settings as if the carbon buildup is still in place. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle.
What is a fly by wire throttle body?
Many car makers including GM started installing fly by wire electronic throttle bodies. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting.