Question about 2002 Ford F150 Regular Cab

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P1409 code on 2002Ford F150 4.6L

Running real ruff during nomal drive

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P1409 - EGR Vacuum System Leak

CHECK THE EGR CONTROL SYSTEM FOR A SERIOUS VACUUM LEAK,

Posted on Mar 24, 2009

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Posted on Jan 02, 2017

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1 Answer

Why is my car running so bad? Like it wants to stall out.


run the fault codes to find the problem
it could be a vacuum leak from a hose fault

Nov 04, 2015 | 1994 Mitsubishi Galant

1 Answer

What are codes p1401 p0302 p0305 p1409 p0301


P1401 Differential Press Feedback EGR Circuit High Input
Your EGR port is plugged. Replace your EGR valve, and clean the ports
A code P0302 may mean that one or more of the following has happened:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer
  • A code P0305 may mean that one or more of the following has happened:
    • Faulty spark plug or wire
    • Faulty coil (pack)
    • Faulty oxygen sensor(s)
    • Faulty fuel injector
    • Burned exhaust valve
    • Faulty catalytic converter(s)
    • Running out of fuel
    • Poor compression
    • Defective computer
    • A code P0301 may mean that one or more of the following has happened:
      • Faulty spark plug or wire
      • Faulty coil (pack)
      • Faulty oxygen sensor(s)
      • Faulty fuel injector
      • Burned exhaust valve
      • Faulty catalytic converter(s)
      • Running out of fuel
      • Poor compression
      • Defective computer
      • A code P0302 may mean that one or more of the following has happened:
        • Faulty spark plug or wire
        • Faulty coil (pack)
        • Faulty oxygen sensor(s)
        • Faulty fuel injector
        • Burned exhaust valve
        • Faulty catalytic converter(s)
        • Running out of fuel
        • Poor compression
        • Defective computer
        • p1409
        • EGR Vacuum System Leak - Read Our Article on EGR Valve Codes For Help With This Oldsmobile Check Engine Light Code

Sep 25, 2014 | Cars & Trucks

1 Answer

P1409


check for vacuum leaks and check the vacuum regulator control unit for correct operation.

Apr 12, 2014 | 1998 Ford F250 SuperCab

1 Answer

Engien running ruff


Of coarse

Any Evap System code or failed component
will effect performance, as that is an unmetered
air source & the pcm will drive fuel trim rich from
a lean condition

Mar 06, 2013 | Cars & Trucks

1 Answer

My 1998 ford explorer runs ruff it idles at about 500- 700 rpm real ruff and driving it is ruff and very jerky no codes come up garyirving@aol.com


The computer is the only thing that will not throw a code since it cannot tell on itself, but have you checked to see if there is water in the fuel? Seafoam is a good product to use to try and displace any water in the fuel. I am not saying to do this, but... on my offroad car (not for street legal use*) I pour one bottle of the 90% isopropyl alcohol in the tank with as low of a tank of gas as possible, and it usually does the trick. Water in the fuel will do pretty much exactly as you are describing, so it might be worth it to try one of those suggestions, hopefully someone with one of these trucks will be able to shine some light on the subject, good luck

Jan 18, 2013 | Ford Explorer Cars & Trucks

1 Answer

Idle on start up is ruff oncei drive it is ok?


Anytime the check engine light is on, you should check the computer for trouble codes. The codes will point you in the direction of the problem and what to troubleshoot.

Aug 23, 2012 | 1990 Chevrolet C1500

1 Answer

My 1999 crown victoria has been dieing when at ideal somtimes has rough ideal, but runs good when im driving, and the ideal will go to normal if i put it in neutral at stops. and somedays it just runs...


p1409 is a fault code fo the stepper motor in the EGR-usually they get dirty from carbon and you need to remove the EGR and clean it with throttle body cleaner. This egr (exhaust gas recirculation) stepper motor code is best checked by physically having a look at the bottom of the egr stepper motor. When the vehicle engine has a lot of mileage, a carbon build up will occur at the pintle rod at the bottom of the motor and make the exhaust gas passage difficult causing the code. When removed, the carbon can be clean and pintle rod freed up so that it moves. Yours is stuck open, causing poor idle since it is introducing exhaust gas into the intake manifold during idle, which if operating properly it will not do at all.

Oct 04, 2011 | 1999 Ford Crown Victoria

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