Question about 2006 Chevrolet Aveo

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Accelerating seems to go up and down, as if out of gas, took it to auto zone, and they siad it was a throttle control sensor or something lke that..is this expensive /something we can do...

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Got mine donetwo weeks ago on a saab 93 less than 60 uk pounds done via saab dealership hope this helps

Posted on May 08, 2009

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Dont take az's diag thats how they sell unesseary parts to people, check for air inlet hose off or vac leak

Posted on May 08, 2009

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Posted on Jan 02, 2017

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I have a 2009 pontiac vibe 2.4. It's not accelerating.I took it to auto zone. They said throttle actuator. So I changed the throttle body on it. The problem is still there. What else can it be?


When you replace throttle body did you replace the sensors or reuse the one you had. If it's drive by wire it could be the ACCELERATOR PEDAL ASSEMBLY PEDAL POSITION SENSOR or the signal from pcm

Sep 26, 2015 | Pontiac Cars & Trucks

1 Answer

My check engine light came on and I took it to auto zone and they siad it was the oxygen sensor. I do not have a book on my car and I don't know where the oxygen sensor is located on my car. I have a...


the o2 sensor is located in the exhaust stream-from the exhaust headers, they are usually not more than 18 to 24 inches from the exhaust as it exits the engine-follow the pipes, they are in front of the catalytic converter-if you have a 4 cylinder, you only have one in front of the cat-if you have a v6, you have two. the o2 sensors BEHIND the cat only monitor the efficiency of the cat itself and have no bearing on driveabillity-concern yourself with the front o2 sensors, they control how the vehicle runs-they get 'tired' as they get older, and should be replaced as you get closer to 100,000 miles. It will generally run better and get better gas mileage.

Sep 12, 2011 | 2004 Chevrolet Cavalier

1 Answer

Icon Wrench appears on the dash board and accelerator pedal falls down (Lincoln town car 2006)


get the code read free by Auto Zone & report it here. It sounds like an electronic accelerator pedal sensor that's not wokring right. May need a pedal sesnor or Throttle Body controller.

Need that code to tell you though.

When they fail, they fail to idle so you don't get Toyota problem.

Mar 02, 2011 | 2006 Lincoln Town Car

2 Answers

I have a 93 honda del sol manual when the car has been turned on it accelerates by itself and it has a check engine light dont now what is wrong with it


You probably have a bad Idle Air Control Valve (IACV). In fuel injected carburetors when the throttle valve is closed the IACV opens and closes to control the idle speed. If it malfunctions the engine may rev up allowing the car if in gear to accelerate on its own . When I had a bad IACV in my Mitsubishi Lancer it would drive down the road at 50 mph with out touching the gas pedal. Fortunately, it could be slowed down by using the brakes (unlike the Toyota stories).

Nov 07, 2010 | Honda del Sol Cars & Trucks

2 Answers

1999 chrysler 300m shaft cam sensor is bad.


did you check the ASD relay,located under the hood in the fuse and relay box. hope this can help.

May 14, 2010 | 1999 Chrysler 300M

2 Answers

Check Engine Light & Dashboard Reads Reduced Engine Power


The reduced engine power happens because there is a problem with the electronic throttle control . Some people call it drive by wire ! The gas pedal has sensors inside , position sensors , connected electrical to the PCM - engine computer , the throttle body on the engine has a DC electric motor an also has position sensors . These are also connected to the PCM electrical . The PCM reads the position sensors which indicate how much your pressing on the gas pedal . then hopefully it opens the throttle the same amout .

The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for mechanical cable. The TAC system performs the following functions:
• Accelerator pedal position sensing
• Throttle positioning to meet driver and engine demands
• Throttle position sensing
• Internal diagnostics
• Cruise control functions
• Manage TAC electrical power consumption
The TAC system includes the following components:
• The accelerator pedal position (APP) sensors
• The throttle body assembly
• The engine control module (ECM)

Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control, however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control, however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn OFF the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned OFF
- Ignore the accelerator pedal input
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.

GM Electronic Throttle Body Circuit Descriptions And Testing Tips

Tons of videos on youtube for these systems , there can be a variety problems , from wiring , worn out sensors , the DC motor , computer etc....

Jun 20, 2017 | 2007 Chevrolet Uplander

1 Answer

1999 wrangler problem: high idle,and hesitant.


If it was originally scanned by auto zone and they said Throttle Position Sensor (TPS),i would go back and have it scanned again,this will tell you for certain what it is.Try and get the code number and definition written down.If it were TPS again,the sensor itself would need to be replaced unless the cost was prohibitive,or the wires to and from the sensor and PCM (vehicle computer),ohms checked for continuity first.Eliminating the wires leaves 2 entities in the circuit,the PCM or the TPS.Checking circuits is costly in labor dollars.Good luck.

Jul 10, 2008 | 1999 Jeep Wrangler

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