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Throttlebody location no power when accelerator is pressed

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After cleaning the throttlebody the engine Motorboats at idle, flutters and hesitates when DE-accelerating, but accelerates fine and will run to 115MPH no problem???


Hmmmm, well, it only makes sense that you could have loosened up some gunk that clogged some stuff up further down the line. I personally would try 44K fuel injector cleaner, however, I have heard of instances where there is a problem with the throttle body gasket.

Mar 16, 2015 | 2006 Nissan Altima 2.5

1 Answer

94 s10 4x4 4.3L TBI. rough idle and power loss


IAC valve @ throttle body regulates the air/fuel idle. its right in front of the throttlebody, replace it, MAP sensor works together with IAC, both could be your problem. everything else you did is good, I feel these items are necessary to put you back in bussiness, just do it !!!

Jan 13, 2013 | 1994 Chevrolet S-10

1 Answer

2005 Mazda 6 4cyl AT Idles high after driving a while.


I would check the pedal position sensor. Do it when it's hot.
Mazda Car 2005-06
  • Accelerator Pedal Position Sensor

    Description & Operation

    A power supply is applied on the Accelerator Pedal Position (APP) Sensor (main) power terminal from the PCM. The ground terminal is grounded with PCM. When the accelerator pedal is moved from the idle position to the fully opened position, the resistance between the accelerator pedal position sensor (main) output terminal and ground terminal will increase according to the depression.
    A power supply is applied on the Accelerator Pedal Position (APP) Sensor (main) power terminal from the PCM. The ground terminal is grounded with PCM. When the accelerator pedal is moved from the idle position to the fully opened position, the resistance between the accelerator pedal position sensor (main) output terminal and ground terminal will increase according to the depression.

Testing

  1. Connect a suitable scan tool to the diagnostic connector. Select APP1 or APP2 percentage.
  2. Turn the ignition switch to the ON position.
  3. Measure the voltage at the PCM terminal and ground with connectors connected:

    APP1-8% load or 0.4 volts with the accelerator pedal releasedAPP1-60% load or 3.0 volts with the accelerator pedal depressedAPP2 -8% load or 0.4 volts with the accelerator pedal releasedAPP2 -60% load or 3.0 volts with the accelerator pedal depressed
  4. If any check above does not meet the specifications, check connectors and wiring between the sensor and PCM. If ok, replace PCM.
  5. If the measured values are outside the standard value range, or if the load % and/or voltage does not change smoothly, replace the sensor.
  1. Connect a suitable scan tool to the diagnostic connector. Select APP1 or APP2 percentage.
  2. Turn the ignition switch to the ON position.
  3. Measure the voltage at the PCM terminal and ground with connectors connected:

    APP1 %-31.0-32.4% with the accelerator pedal releasedAPP1 %-69.8-81.8% with the accelerator pedal depressedAPP2 %-20.2-21.4% with the accelerator pedal releasedAPP2 %-58.8-70.8% with the accelerator pedal depressed
  4. If any check above does not meet the specifications, check connectors and wiring between the sensor and PCM. If ok, replace PCM.
  5. If the measured values are outside the standard value range, or if the load % does not change smoothly, replace the senso

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Jul 23, 2017 | 2005 Mazda 6

1 Answer

My mercedes 190e 200cc runs fine at times then when i slow down in traffic or stop in traffic i notice the idol speed drops. Its as though the car wants to stall. I press the accelerator down and the car...


i would start by checking the idle air control valve. it may be called something else on a merc but basically it its a solenoid that controls the amount of air entering the throttlebody when at idle they tend to get sticky and slow when they are on there way out. hope that helps, i dont know if it is the answer but it is certainly worth looking at. let me know how you go

Feb 04, 2011 | 1984 Mercedes-Benz 190

1 Answer

Where is the throttle body sensor located on a GMC 2007 Sierra 2WD?


on the throttlebody ( where the air intake hose connects to the throttlebody, opposite side of cables )

Jan 14, 2011 | GMC Sierra 1500 Cars & Trucks

2 Answers

1995 gmc sierra automatic. When I accelerate to the floor it has no power but when I let off on the accelerator it seams to pick up speed. will not run faster than 65 or 70 mph. I put HEET in the fuel...


it is definately a fuel problem, if you press gently it speeds up step on it and it just bogs, i think it has sommething to do with the ecm that controls timing and fuel at the TBI (throttlebody injectors) not a filter, i put a new pump,tank,filter and cleaned out the fuel lines and still could not cure the problem, then i heard of a few thigs that got me thinkin but when i was gonna tackle it a guy said he wanted to buy it so i told him the issue he didnt care and i sold it. but those were the only things left to do.

Jan 14, 2011 | 1995 GMC Sierra C1500

2 Answers

1987 Chevy Suburban 350 2wd not starting or running right


What size engine do you have in it? And, how many miles on it?? Well, I guess it really doesn't matter. At first thought it sounds like you are experienceing a fuel problem, and changing the throttlebody didn't solve your problem. I would start by looking and checking my fuel delivery system. The fact that you had to spray gas into the throttlebody tells me that fuel is not getting there. I would start with the least expensive thing to fix first. Check your gas filters. These are often , OFTEN, overlooked as a sorce of problems, and are rarely changed and often overlooked, and are the problem alot of the time. If that dosen't cure your problem check your fuel pump. Make sure it is delivering the proper pressure. I would bet your problem would be solved, but if it's not then next I would check the electrical components of your fuel system.

May 12, 2009 | 1987 GMC Suburban

1 Answer

1997 Chevy Astro Van accelerates without pushing on gas peddal


You are right to be concerned about this behavior since it can definitely increase your stopping distance.
Either your cable has eaten its way into the inner tubing and is hanging up, or the mechanics at the throttlebody needs some lubrication.
With no engine running, have someone inside to press on the accelerator while you watch for movement of the linkage under the hood. Once you have located it, operate it by hand to see how it feels. If the linkage does not return to the stops provided, then use a heavy-duty penetrating oil to soak the moving parts. If it still hangs, then the cable needs replacement.
With the engine running, tranny in Park and the parking brake on, after you have lubed the visible linkage, have some one inside press on the gas and watch the linkage to see if it now returns to the mechanical stop. Carefully move it by hand to see if it is truly at the limits of its travel where it should be at an idle.

Aug 23, 2008 | 1997 Chevrolet Astro

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