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2003 Pontiac Montana wont accelerate smoothly from 0 to 40 km/hr if gas pedal is depressed too fast. RPM's increase but no acceleration for 15 to 30 seconds and then kicks in . HAd fuel filter replaced but didnt fix problem. What could it be?

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6ya6ya
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Posted on Jan 02, 2017

  • 12 Answers

SOURCE: Flat Turbo Transition

Go to pelicanparts.com go to the 911 tech area for great help.

Jim

Posted on Aug 09, 2008

frcs68
  • 1605 Answers

SOURCE: rpm increasing to 4 at

check your transmission fluid.

Posted on Oct 24, 2008

3mac
  • 61 Answers

SOURCE: 1998 Pontiac Sunfire won't accelerate

I assume that you do not have a "check engine" light?

The next thing I would do is check the pressure from the fuel pump. You can have this done at your preferred garage, or by purchasing a fuel pressure gauge from any parts store.

Vent the fuel tank vapors by loosening the fuel cap. Remove the electric fuel pump fuse and start the engine. Allow the engine to run until it runs out of fuel and stalls. After spinning the engine over for a period of 3 to 5 seconds, turn off the ignition switch and install the electric fuel pump fuse. Next, install a fuel pressure gauge in the fuel rail supply line, and secure the fuel tank cap. With the ignition key in the on position, verify that no leaks are present and start the engine. Visually verify the PSI reading on the gauge. The pressure for your vehicle should be 41-47 PSI (Pounds per Square Inch). Hope this helps and good luck!

Posted on Jan 13, 2009

alicantecoli
  • 22095 Answers

SOURCE: car stalls pressing accelerator do not increase

is it fly by wire or does it have a throttle cable ,if fly by wire change the sensors on the pedal

Posted on Nov 20, 2009

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1 Answer

Car failed to accelerate


Failed Transaxle

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Happens when you fail to change your trans
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The same fate will besto your steering system next

Nov 25, 2012 | 2003 Pontiac Montana

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

Error code p1271 on trailblazer


That trouble code is faulting the accelerator pedal sensor. The APP sensors are located in a TAC module mounted to the accelerator pedal bracket. There are three individual APP sensors within the TAC module. Three separate signal circuits, low reference circuits, and 5v reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.

Nov 26, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

It has started to accelerate.up to 35 mph without any pressure on accelerator and revs up to 3 rpm's when idling. could this be a stuck gas pedal? will some WD40 do the trick


the idle control motor could be opening up causing the rpm to increase(acting like a vacume leak),by either sticking or the(ecm)computer, is commanding an increase in rpm.a bad throttle position sensor ribbon could be the problem(must be replaced no repair).if it was a sticking gas pedal then at idle when you move the gas pedal the rpm`s should increase alot.its possible that a vacume leak could cause this like a hose,although this should show up at idle with a high idle.

Apr 13, 2011 | 1999 Pontiac Grand Am GT

1 Answer

Hi, I have a Pontiac Montana 2003 for a year and is running well, it has 148000 km. Today I went from Toronto to Niagara Falls and park my car for a couple of hours and when I turned on the engine the...


replaced the oil and re set computer to fresh oil change
thes older models will only go aproxamitly 5000k on oil change
it may not have been reset at last oil change
key on run motor off depressed gas pedal to floor 3 times within 5 seconds of key on run
then start motor to re set oil life system

Apr 09, 2011 | 2003 Pontiac Montana

1 Answer

Dodge Caravan 2004 - Sticky Gas Pedal(Not carpet related)


open up ur throttle body u will find alot of carbon . use cab cleaner to clean it then mount it back it will drive smoothly

Jul 26, 2010 | 2004 Dodge Caravan

1 Answer

Car stalls pressing accelerator do not increase


is it fly by wire or does it have a throttle cable ,if fly by wire change the sensors on the pedal

Nov 20, 2009 | 2003 Mercedes-Benz C-Class

2 Answers

RPM drops to zero at idling after engine accelerates when warm


This may been an ignition module or a MAF sensor, this car may need to be diagnosed using a OBD I computer code reader to accurately diagnose the problem.

Aug 06, 2009 | 1998 Mitsubishi Eclipse

2 Answers

How to reset the change oil light in a 2001 pontiac montana with a digital message center?


turn the key on to the power position but do not start the vehicle, then press the accelerator pedal to the floor three times within a ten second period.
Good luck dont forget to rate

Apr 01, 2009 | 2001 Pontiac Montana

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