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Throttle plate misadjusted - Passat Volkswagen Cars & Trucks

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Reduced engine power message


You don't say what make an model vehicle ! But with most vehicle makes it has to do with the Throttle Actuator Control (TAC) System , electronic throttle control ! are you having reduced engine power ? There are probably DTC'S - diagnostic trouble codes stored in the PCM - engine computer .
The throttle actuator control (TAC) system is used to improve emissions, fuel economy, and driveability. The TAC system eliminates the mechanical link between the accelerator pedal and the throttle plate. The TAC system eliminates the need for a cruise control module and idle air control motor. The following is a list of TAC system components:
?€¢
The accelerator pedal assembly includes the following components:


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The accelerator pedal


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The accelerator pedal position (APP) sensor 1


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The APP sensor 2


?€¢
The throttle body assembly includes the following components:


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The throttle position (TP) sensor 1


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The TP sensor 2


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The throttle actuator motor


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The throttle plate


?€¢
The engine control module (ECM)


The ECM monitors the driver demand for acceleration with 2 APP sensors. The APP sensor 1 signal voltage range is from about 0.98-4.16 volts as the accelerator pedal is moved from the rest pedal position to the full pedal travel position. The APP sensor 2 range is from about 0.49-2.08 volts as the accelerator pedal is moved from the rest pedal position to the full pedal travel position. The ECM processes this information along with other sensor inputs to command the throttle plate to a certain position.
The throttle plate is controlled with a direct current motor called a throttle actuator control motor. The ECM can move this motor in the forward or reverse direction by controlling battery voltage and/or ground to 2 internal drivers. The throttle plate is held at a 7 percent rest position using a constant force return spring. This spring holds the throttle plate to the rest position when there is no current flowing to the actuator motor.
The ECM monitors the throttle plate angle with 2 TP sensors. The TP sensor 1 signal voltage range is from about 0.5-4.25 volts as the throttle plate is moved from 0 percent to wide open throttle (WOT). The TP sensor 2 voltage range is from about 4.45-0.7 volts as the throttle plate is moved from 0 percent to WOT.
The ECM performs diagnostics that monitor the voltage levels of both APP sensors, both TP sensors, and the throttle actuator control motor circuit. It also monitors the spring return rate of both return springs that are housed internal to the throttle body assembly. These diagnostics are performed at different times based on whether the engine is running, not running, or whether the ECM is currently in a throttle body relearn procedure.
Every ignition cycle, the ECM performs a quick throttle return spring test to make sure the throttle plate can return to the 7 percent rest position from the 0 percent position. This is to ensure that the throttle plate can be brought to the rest position in case of an actuator motor circuit failure. Observe, under cold conditions, the ECM commands the throttle plate to 7 percent with the ignition ON and the engine OFF to release any ice that may have formed on the throttle plate.

Aug 21, 2016 | Cars & Trucks

1 Answer

2005 ford f150 code p05


Possible causes - Dirty throttle body - Electric throttle control actuator misadjusted or damaged - Faulty Electric throttle control actuator - Intake air leak - Poor electrical connection to the Intake Air Control (IAC) valve

Read more: http://www.engine-codes.com/p0506_ford.html

Feb 10, 2016 | Ford Cars & Trucks

3 Answers

COULD THE GAS PEDAL CABLE CAUSE THIS CODED PO507 to be high


Extracted from Engine-Codes.com

Code P0507

Possible causes

- Dirty throttle body

- Electric throttle control actuator misadjusted or damaged

- Faulty Electric throttle control actuator

- Intake air leak

- Poor electrical connection to the Intake Air Control (IAC) valve


help.jpg What does this mean?

Tech notes

If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you may have to replaced the Electric Throttle Control Actuator (Motor) to repair the problem.



There is a factory service bulletin for the following Chevrolet models:



2006-2008 Chevrolet Trail Blazer

2007-2008 Chevrolet Avalanche

2007-2008 Chevrolet Express

2007-2008 Chevrolet Silverado

2007-2008 Chevrolet Suburban

2007-2008 Chevrolet Tahoe

Chevrolet Factory Service Bulletin OBDII Code P0507


What does this mean?

When is the code detected?

Thi P0507 code sets when the Powertrain Control Module (PCM) detects an engine speed outside of the Idle Air Control (IAC) valve range of control.

Possible symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

- Engine hard to start

- Rough or erratic idle speed

P0507 Chevrolet Description

The Idle Air Control (IAC) valve is a Powertrain Control Module (PCM) controlled stepper motor located on the throttle body. The stepper motor drives a valve pintle which protrudes into a passage that bypasses the throttle plates. The PCM commands the IAC valve pintle to extend to decrease the idle speed. The bypass air flow is reduced and the idle speed decreases as the pintle approaches its seat. The PCM retracts the IAC valve pintle away from its seat to increase the idle speed. The retracting of the IAC valve pintle allows more air to bypass the throttle plates. One of the PCMs uses for the IAC system is to maintain a desired idle speed. This DTC sets when the PCM detects an engine speed outside of the IAC\'s range of control.





Read more: http://engine-codes.com/p0507_chevrolet.html#ixzz3ObdI2chF

Jan 11, 2015 | 2001 Chevrolet Blazer

1 Answer

P0508 code on 2001 Honda CR-V how do I troubleshoot


Hello,

P0508 = Idle Air Control System Circuit Low

Symptoms:
Engine Light ON (or Service Engine Soon Warning Light) - Engine hard to start - Rough or erratic idle speed.

Causes:
Dirty throttle body - Electric throttle control actuator misadjusted or damaged - Faulty Electric throttle control actuator - Intake air leak - Poor electrical connection to the Intake Air Control (IAC) valve.

Solution:
If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you may have to replaced the Electric Throttle Control Actuator (Motor) to repair the problem.


I hope this helps!

Mike

Dec 12, 2011 | 2001 Honda CR-V

1 Answer

Hi, I'm looking for the throttle plate on my 2004 pontiac bonneville. I am trying to do a fuel system tune-up and I am having trouble locating where this is to clean it out.


the throttle plate is located inside the intake where the air snorkel fastens to.the throttle cable fastens to the throttle shaft and if you look inside the intake where the shaft is you will see the throttle plate.when you move the throttle shaft you will see the plate move and don`t forget to clean the back side of the plate and intake area where the plate rests when closed.

Jul 06, 2011 | Pontiac Bonneville Cars & Trucks

1 Answer

Obd2 code p1226


This is s throttle position sensor error. At idle the throttle plate shuts closed and an electric actuator on the throttle plate shaft rotates the throttle plate a fraction to allow enough air through to the inlet manifold to maintain idle. If for some reason the throttle plate cannot open enough to allow the required amount of air through or there is some obstruction this will cause the p1226 error. Remove the air ducting between the air filter and the throttle. Ensure that the throttle interior and plate are free of oily grime. Ensure the edge of the plate is clean: WD40 and a cloth is ideal. Reassemble the air ducting and test.

Dec 05, 2010 | Nissan Maxima Cars & Trucks

1 Answer

Car is idling very high.RPms at from 2000 t0 3000


SOUND LIKE IDLE AIR CONTROL VALVE PROBLEMS OR DIRTY STICKING THROTTLE PLATE OR BINDING MISADJUSTED ACCELERATOR CABLE.

Nov 09, 2010 | 2005 Buick Rendezvous

1 Answer

Where is the throttle plate located as I hear it needs to be cleaned else it will cause problems. The engine currently will not idle unless the throttle is advanced some after the battery was replaced. I...


The throttle plate is where the accelerator cable hooks to,but the throttle plate is actually on the inside of the throttle body,remove the intake hose,or duct and you can see the throttle plate,it will open when the throttle is moved,it is a plate that tilts as you accelerate .

Sep 15, 2010 | Chrysler Sebring Cars & Trucks

1 Answer

My k1500 trany doesnt shift correctly it revs up really high then shifts hard. Fluid is full. The problem came all the sudden. it was using fluid but never really saw a leak.


Sounds like the throttle valve cable is misadjusted or broken. This cable goes from the throttle body to the left hand side of the trans, if you pull on the end at the throttle body it should spring back, if not it is broken or sonething in the trans is amiss

Mar 13, 2010 | 1990 Chevrolet K1500

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