Question about 2006 Ford F 350 Super Duty

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Backfires through throttle plate at idle and there is no power

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Sounds like your timing belt may have jumped a tooth. Or your timing is way off. assuming its a gas engine.

Posted on Apr 29, 2014

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Posted on Jan 02, 2017

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Throdlebody and gas peddle out of sink won,t go faster than 30


If you would like help we would need the DTC - diagnostic trouble code .Is their a Reduced Engine Power Mode message showing on the instrument cluster ?
Reduced Engine Power Mode
When the PCM detects a problem with the throttle actuator control (TAC) system the PCM enters one of the following Reduced Engine Power Modes:
• Acceleration Limiting--The control module will continue to use the accelerator pedal for throttle control, however the vehicle acceleration is limited.
• Limited Throttle Mode--The control module will continue to use the accelerator pedal for throttle control, however the maximum throttle opening is limited.
• Throttle Default Mode--The control module will turn off the throttle actuator.
• Forced Idle Mode--The control module will perform the following actions:
- Limit engine speed to idle by positioning throttle position, or by controlling fuel and spark if throttle is turned off.
- Ignore accelerator pedal input.
• Engine Shutdown Mode--The control module will disable fuel and de-energize the throttle actuator.
IF you do not know this your best bet would be to take to a qualified repair shop .
DTC P0506
DTC P0507
The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

Jan 05, 2017 | Cars & Trucks

1 Answer

1990 2.9 bronco 2 ..bucking backfiring, and wont idle up..


It sounds like a major vacuum leak into the intake manifold. Check all of the hoses attached to the intake and throttle body for leaks including the power brake booster hose.

Feb 10, 2015 | Cars & Trucks

1 Answer

Correct code P0504?


What Colorado do you have ? 2 wheel or 4 wheel drive ? Sport ,sport LS 3.5L , Z71, Z71 LS. etc. what size engine ? an does it have electronic throttle control ? I have factory service info an it is not showing that code .
DTC P0506

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0506 Idle Speed Low
DTC P0507

Circuit Description

The throttle actuator control (TAC) motor is controlled by the powertrain control module (PCM). The DC motor located in the throttle body drives the throttle plate. In order to decrease idle speed, the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this DTC sets.

DTC Descriptor

This diagnostic procedure supports the following DTC:
DTC P0507 Idle Speed High
Cleaning the throttle body mite take care of it !
Cleaning Cleaning An Electronic Throttle Body Safely

Jan 31, 2015 | 2005 Chevrolet Colorado

1 Answer

Backfire at idle. no power can not drive


If this is a "Cam Phaser" style engine, it may be the problem. Engines of this type used a part that adjusts the timing on each half or bank of the motor. When a "cam Phaser " sticks out of position, one side of the motor is timed different than the other.

Look up articles about your motor by size. The 2004-2008 years were bad for this problem and there were recalls with limits.

Apr 18, 2014 | 2004 Ford F350

1 Answer

Car lopes as soon as it warms up


idle air control is looking for base idle. throttle body base idle plate is dirty with carbon. cleaned out throttle plate with carb cleaner and tooth brush. use rags to catch black carbon.open plate.by some one hold throttle plate open with gas pedal. engine not running. after completed, start engine. run 1500 prm for a short time to clean out excess fluid. that should fix your problem..

Jan 18, 2013 | 1991 Chevrolet Corvette

1 Answer

Backfire going and no power sometime run right ?


Check these items;
  1. Fuel Pressure at the Fuel Rail (40-50 PSI while running)
  2. Throttle Position Sensor
  3. Crankshaft Position Sensor

Dec 17, 2012 | 1993 Plymouth Grand Voyager

3 Answers

2002 camry le 4 cyl idles really really low, sputters, and turns off, i have to put it in park and keep reving it and when the light turns green quickly put it in drive and go or it will turn off. also,...


This vehicle is equipped with an electronic throttle control motot that operates the throttle plate. and controls the idle if your throttle plate is carboned up if will decrease air flow into the engine causing a low idle. This is very common if your battery was replaced or disconnected.

Sep 17, 2009 | 2003 Toyota Camry

1 Answer

Hard start when air temp is cold, backfires when warm


Try this, remove (MAF) Mas Air Flow sensor,(be sure key is OFF) so you don't set a trouble code when disconecting wire conector, with some throttle body/air intake cleaner from the outlet side of MAF, spray the sensor clean, let dry, reassemble.Remove snorkle from throttle body, and with a old tooth brush, clean throttle body& plate with cleaner, may take a couple of cans if throttle is badly 'coked' up. Hope this helps.

Feb 01, 2009 | 1999 GMC Sierra

2 Answers

I have a 85 toyota celica, it wants to idles up and down tps is n


I would think that the TPS is not adjusted correctly. Move it until the idle stops fluctuating and advise how it runs.

The TPS does 2 things...It tells the computer the opening of the throttle plate, and it also sends a signal to the computer when the throttle plate is closed. If the TPS has the closed throttle switch activated, and the throttle plate is open, the ECU will fluctuate the idle up and down.

Jan 23, 2009 | 1985 Toyota Celica Supra

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