Question about 2005 Ford F-150

1 Answer

Emission light My 2005 F150 began running extremely rough (missing) especially when loaded (up hill). The emissions light came on & wouldn't go off. When idling or in neutral the engine runs fine, it will rev up with all kinds of power. Its not the tranny...

Posted by on

  • 5 more comments 
  • rathtexas Feb 25, 2009

    I have no idea. I had to have it towed home. It was running fine, then out of no where it started missing & didn't have enough power to go up a small incline...

  • rathtexas Feb 25, 2009

    It was an emission light in the lower left of the dash

  • rathtexas Feb 26, 2009

    Got the codes today on the 2005 F150 Emission light: P0171B, P0174B, P0191, P0300B, P305B, P0307, P2195, P2197

  • rathtexas Feb 26, 2009

    I am taking the truck in & have the fuel filter changed this AM. After the guy pulled the codes he cleared the machine & ran it again, this time he could not pull any codes, not one? The day before this incident I had just made a 450 mile round trip, no problems. Filled up with fuel to make another trip, got about 15 miles down the road & wham! Is it possible its just bad gas? As a rule, I get 22 MPG, one way on this trip it got 12. Being female, I just don't want to do "checkbook repairs" (guessing) I need it fixed. The Ford dealer here is absolutely no help, they had it almost two weeks & said they couldn't find anything wrong, while it was under warranty. Thanks so much for your help.

  • rathtexas Feb 26, 2009

    Mechanic shop I took the 2005 F150 to said my problem was a clogged fuel filter. Also, I didn't know this truck was supposed to have 7 quarts of oil.... Thanks for the help.

  • yadayada
    yadayada May 11, 2010

    U need to find out what trouble codes are stored

  • yadayada
    yadayada May 11, 2010

    what is the trouble code that u have.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 69 Answers

Map sensor. check your spark plugs, wires, etc. maybe a loose wire plug. did u mention check engine light, i wonder can you tell me what diagnostic code came up. go to ur nearest auto parts if u dont have a scanner. and pull them codes out.

Posted on Feb 25, 2009

  • Uriel Tello
    Uriel Tello Feb 26, 2009

    P0191, that's what i am concern about your fuel pressure, of course that's P0171B, P0174B,P2195, P2197 lean fuel mixture. if you have a air leak at the intake that could be your problem. check for air leaks..... but i still thinking about your fuel pressure regulator performance. man if i had my hands on your truck god knows!!!!P2195, P2197 this means same as P0171B, P0174B. probable air leak, but because of P0191 meaning fuel pressure problem, your P0300B, P305B, P0307codes happen this mean engine no man it's a joke.... it means misfires.



1 Suggested Answer

  • 2 Answers

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

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a Holden Astra 2006 Wagon 1.8ltre. It was running rough so I replaced the coil pack. I have tried disconnecting the battery for half an hour but can't get emission light to go out. Any ideas?

Did the car run good after the coil was replaced?. Emission light will need resetting with a scan tool Providing there is nothing wrong with the emission set up being EGR valve,faulty solenoid or 02 sensor

Nov 03, 2016 | Holden Cars & Trucks

1 Answer

Ford F450 V10 rough running under load.

Good place to start. Ignition module may be the cause too.

Mar 06, 2016 | Ford Cars & Trucks

1 Answer

1989 f250 with a 351w ran fine with the check engine light on now it is off and it idles extremely rough and misses

Your check engine light only relates to your emission system. So your problem lies somewhere there. I would disconnect the battery for 5 minutes and allow any sensor to hopefully reset. Fords love sensors..and in 89 its probably carburated, with no computer. Hopefully the check engine light returns..if so get the codes read immediately by a OBG 1 scanner..then youll know where the fault is.

Dec 22, 2014 | Cars & Trucks

1 Answer

Emission control valve p0444

Google the codes you get


Sep 02, 2013 | 2005 Nissan Pathfinder

1 Answer

2005 Mustang GT emission control light


Apr 08, 2017 | 2005 Ford Mustang GT

1 Answer

2003 4.2 F150 idles smooth under load but misses under load

Chech fuel pressure pump might be getting weak had same problem myself... good luck

Jul 08, 2012 | 2003 Ford F150 Regular Cab

1 Answer

When hot seems like it lacks power and a miss .. when going down hills and level ground runs fine. long hills and gets warm seems almost like it misses

fuel pump may be going bad have pressure tested on vehicle when warm also egr valve may be going bad or has bad carbon build up lack of power a miss will give u a trouble code[check engine] as well as egr valve and other emission parts but fuel pump usually does not

Sep 29, 2009 | 1999 Chevrolet C1500

3 Answers

Truck was running fine coming back from vacation

I would suggest going to Autozone and have them check for code or codes that might have occured,they will do it for free and diagnose what the problem might be. But anytime the check engine light comes on it has to do with your emission,possibly an oxygen sensor may have went bad,have them pull the codes and see what the prob is.

Jul 11, 2009 | 1998 Ford F150 Regular Cab

1 Answer

Emission light blinks and car runs rough

Mass air flow sensor is likely bad.

Any Mods been made to the car's engine?

Mass air flow Located in side the air intake box before the air hose. THat is in front of the car above the Turbo.

Or right above the air filter.

give me some more info...

May 26, 2009 | 1998 Volkswagen Passat

1 Answer

Check emission light

Have you seen poor fuel economy? Does it run rough when warmed up? If so, chances are you have a bad oxygen sensor - it'll cause the car to run rich, which will hurt fuel mileage and cause rough running. You might also want to change the spark plugs - if they've been in there too long, they're probably covered in carbon and not firing as well as they should be, which will also cause issues with the smoothness of the engine.

Nov 09, 2008 | 1995 Nissan Maxima

Not finding what you are looking for?
2005 Ford F-150 Logo

1,021 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers


Level 3 Expert

5613 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides