Question about 2004 Ford F150

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Have 2001 ford losing power on take off changed filter checked plug no codes changed maf but nothing fixing it very interminent any suggestions before i wast money on pump tooooooooooo

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I would suggest,if you have no knowledge of your vehicles systems,you not change anymore parts.
If your going to do your own diagnostics,purchase the factory manuals and especially the Powertrain Control/Emissions Manual,from Helm.com

Posted on Sep 01, 2010

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Posted on Jan 02, 2017

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Ford focus 2.0 duratec losing engine power, no cel fuel psi is at 30 when idling and 40 when revving replaced maf and, cleaned egrchecked for vacuum leaks changed manifold gaskets! Any idea


Pull out the spark plugs their is probably oil or water in the well surrounding plugs. Cheap eaasy fix for water just dry it out. oil? Replace valve cover gasket .

Oct 06, 2016 | 2005 Ford Focus

1 Answer

How do I fix error codes P0171 & P0174 for a 2000 ford Mustang 3.8L.


Hi Pamela:

I suggest to check on the Power Distribution Box, that is located in the engine compartment.The power distribution box contains high-current fuses that protect your vehicle's main electrical systems from overloads.

8_22_2012_3_16_38_pm.gif

8_22_2012_3_18_41_pm.gif

DTC P0171 - System Too Lean (Bank 1)This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.


A code P0171 may mean that one or more of the following has happened:

  • The MAF (Mass Air Flow) Sensor is dirty or faulty
    Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
  • There could be a vacuum leak downstream of the MAF sensor
  • Possible cracked vacuum or PCV line/connection
  • Faulty or stuck open PCV valve
  • Failed or faulty oxygen sensor (bank 1, sensor 1)
  • Sticking/plugged or failed fuel injector
  • Low fuel pressure (possible plugged/dirty fuel filter!)
  • Exhaust leak between engine and first oxygen sensor


Possible solutions, a lot of times, cleaning the MAF sensor and finding/fixing vacuum leaks fix the problem. If you're on a tight budget, start there, but that may not be the fix for certain. So, possible solutions include:
  • Clean the MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
  • Inspect all vacuum and PCV hoses, replace/repair as required
  • Inspect all hoses and connections in the air intake system
  • Inspect and/or test the intake manifold gaskets for leakage
  • Check for a dirty fuel filter and proper fuel pressure
  • Ideally you'll want to monitor short and long term fuel trims using an advanced scan tool
  • If you have access, you may want to run a smoke test


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Aug 22, 2012 | Ford Mustang Cars & Trucks

2 Answers

Where is the fuse located for the secondary air pump for the 2000 Ford Mustang 3.8


Hi there:I suggest to check on the Power Distribution Box, that is located in the engine compartment.The power distribution box contains high-current fuses that protect your vehicle's main electrical systems from overloads.

8_22_2012_3_16_38_pm.gif

8_22_2012_3_18_41_pm.gif

DTC P0171 - System Too Lean (Bank 1)This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.


A code P0171 may mean that one or more of the following has happened:

  • The MAF (Mass Air Flow) Sensor is dirty or faulty
    Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
  • There could be a vacuum leak downstream of the MAF sensor
  • Possible cracked vacuum or PCV line/connection
  • Faulty or stuck open PCV valve
  • Failed or faulty oxygen sensor (bank 1, sensor 1)
  • Sticking/plugged or failed fuel injector
  • Low fuel pressure (possible plugged/dirty fuel filter!)
  • Exhaust leak between engine and first oxygen sensor


Possible solutions, a lot of times, cleaning the MAF sensor and finding/fixing vacuum leaks fix the problem. If you're on a tight budget, start there, but that may not be the fix for certain. So, possible solutions include:
  • Clean the MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
  • Inspect all vacuum and PCV hoses, replace/repair as required
  • Inspect all hoses and connections in the air intake system
  • Inspect and/or test the intake manifold gaskets for leakage
  • Check for a dirty fuel filter and proper fuel pressure
  • Ideally you'll want to monitor short and long term fuel trims using an advanced scan tool
  • If you have access, you may want to run a smoke test


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Aug 22, 2012 | 2000 Ford Mustang

2 Answers

My 2001 Ford F350 diesel truck check engine light will come on and truck will occasionally die. Have replaced the cam sensor and also used a ton of sea foam changed the fuel filter nothing is working? Any...


Hi


The check engine light is on because ECM (Control Module) detected a fault with your car's system. ECM has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. You'll need to get the codes checked from a nearby dealer/mechanic. However, it seems that as you are facing surge issue, it can be due to bad plug, bad fuel injector or a bad egr valve. Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

Apr 13, 2010 | 2001 Ford F350 Super Duty SuperCab

1 Answer

Chevy truck '02 surges between 45 and 55 mph


you should change the tps( throtal position sensor) this can cause that problem

Aug 15, 2009 | 2000 Chevrolet Silverado

1 Answer

Code 171 - System Adaptive Fuel Too Lean Bank 1


Check under driver seat area near frame for filter.

Dec 30, 2008 | 2001 Ford Windstar

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