Question about 2009 Ford Focus

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Ford 09 C-Max 1.8 diesel lacks power at low reves. and in newtral when accelerator pedal is pressed reves. jump from tickover to 1500 reves.

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 22246 Answers

SOURCE: ford fiesta 2002 1.4 diesel lx

sounds more like the ECU

Posted on Nov 15, 2008

  • 99 Answers

SOURCE: lack of power when trying to accelerate

how old is the car? when was the last tune up done? does it make any sound when you hit the gas hard? any questions you can email me at

Posted on Jun 30, 2009

  • 1 Answer

SOURCE: Ford Focus 2.0tdci 2005 - Engine suddenly lacking power / noises

One of the air intake pipes had come loose. Fastened the jubilee clip back up and it was like having a new car!

Posted on Jan 25, 2010

  • 25 Answers

SOURCE: 2001 Ford F650 with 7.2 Cat deisel acceleration problem

Check your TPS Throttle positioning sensor. Sounds like it has a dead spot in it or it is failing. May also be a wiring harness issue or loose connection at TPS too! If its intermittent then it will soon go out completely. It should be located on your fuel pedal. Remove it and check it with an ohm meter. Check resistance all the way thru from 0-100 percent. When it is not working it should do nothing and show no resistance. When it is working the resistance value will increase and or decrease as you turn the sensor.

Posted on Feb 22, 2010

  • 8 Answers

SOURCE: my 2000 ford focus hesitates and as lack in power

It's possible it's your fuel pump getting ready to fail. There was a recall a number of years back on the fuel pump, which your local Ford dealer should replace for free.

Posted on Feb 25, 2010

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Ford 6.4 diesel the boost gauge goes all way up when lightly accelerating but I'm not get power of 40 psi my power feels low/weak. On highway if I press pedal for 1-2. Seconds turbo boost is maxed!!!!

check for leaking boost hoses, cracked inlet tube, cracked intercooler
run the fault codes ( if applicable) could be a sensor that is not communicating the boost setting to the ecm to increase fuel to the injectors

Jan 19, 2017 | Ford Cars & Trucks

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Hi have an ford focus 2.0 diesel auto 2012 and it shudders at 30mph when i accelerate seems like it is under powered so i have to give it more gas

they fitted a plastic accelerator pedal sensor to the diesel model

have that sensor part checked out as well



Nov 25, 2016 | Ford Cars & Trucks

1 Answer

2003 Yukon Denali XLT lights flicker, rpm goes up and down when on park or stopped or driving and slow speeds. Sometimes it turns off. I thought it might be bad spark plugs or cables so I changed them and...

Your vehicle has electronic throttle control . Position sensor's in the gas pedal an the throttle body , inputs to the Throttle Actuator Control Module
The TAC module is the control center for the throttle actuator control system. The TAC system is self-diagnosing and provides diagnostic information to the PCM through a dedicated serial data line. The TAC achieves throttle positioning by providing a pulse width modulated voltage to the TAC as directed by the PCM.

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 components include the following:
• The accelerator pedal position (APP) sensors
• The throttle body assembly
• The throttle actuator control module
• The powertrain control module (PCM)
Accelerator Pedal Position (APP) Sensor
The accelerator pedal assembly contains 2 individual APP sensors within the assembly. The accelerator pedal position (APP) sensors 1 and 2 potentiometer type sensors each with 3 circuits:
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The APP sensors are used to determine the pedal angle. The control module provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors then provide the control module with signal voltage proportional to pedal movement. APP sensor 1 signal voltage is low at the rest position and increases as the accelerator pedal is applied. APP sensor 2 signal voltage is high at the rest position and decreases as the accelerator is applied.
Throttle Body Assembly
The throttle body assembly consists of the throttle body, the throttle position (TP) sensors, and the throttle actuator motor. The throttle body functions similar to a similar to a conventional throttle body with the following exceptions:
• An electric motor opens and closes the throttle valve.
• The throttle blade is spring loaded in both directions and the default position is slightly open.
• There are 2 individual TP sensors within the throttle body assembly.
The TP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The TP sensors are used to determine the throttle plate angle. The control module provides each TP sensor a 5-volt reference circuit and a low reference circuit. The TP sensors then provide the control module with signal voltage proportional to throttle plate movement. Both TP sensor signal voltages are low at closed throttle and increase as the throttle opens.

Flickering light's could be caused by a bad diode in the alternator . Fluctuating idle could be caused same alternator problem or dirty throttle plate.
Throttle Body Cleaning To Restore Idle Quality

Jul 15, 2017 | 2003 GMC Yukon

1 Answer

I have a 2004 f350 with the 6L diesel. I get an occasional problem with a loss of power and thick white smoke when I try to accelerate from idle. The motor runs smooth idles smooth no coolant loss. Once I...

if your not loosing water and have white smoke it is unburnt fuel,poss the mass air sensor.(car thinks its cold so putting in double fuel for cold tickover.)

Jul 01, 2010 | Cars & Trucks

1 Answer

Poor acceleration response and lack of power,

Replace the the spark plugs and wires. That sounds like a faulty plug wire(s). **Please rate me on this answer**

Jun 06, 2010 | 1983 Mazda RX-7

1 Answer

My sation wagon hesitates when i press the pedal and has no power ,it seems the transmission is stuck in drive and wont go in to low when taking off from stop,therefore i must floor the accelerator to get...

you may want to get your catlytic converter checked. it may be stopped up. this will make it not shift do to lack of power. leave a comment on results.

Mar 20, 2010 | 1995 Ford Taurus

1 Answer

Q. I have a 2004 Ford E-350 diesel turbo with

change fuel filter and drain water seperator

Nov 01, 2009 | 2007 Ford F-150 Harley Davidson

1 Answer


Your ford has power assisted breaks this power is delivered from the motor, at the point when the accelerator is inactive. There for it sounds like your idle speed setting is too low, if you have a rev counter then it should be reading around 1000 revs at idle, if not the idle needs increasing. Hope this helps

Sep 28, 2008 | 2007 Ford F-250 Super Duty Lariat

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