Ford F150 engine backfiring, running/idling rough

For this types of problem,there are few help inks to troubleshoot the problem.Click the link below to go through the troubleshooting procedure to resolve the issues :----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html-----------van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html
--------------runs lean and idles rough? http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html
-----------Car still runs Rough after tune up? http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html
------------Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
----------High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
------------Engine Backfires? http://technoanswers.blogspot.in/2012/02/jeep-backfires.html----------- Nissan stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

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Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.

Had a problem like this before and it was the computer..But you could faintly smell something like burnt wires..The computer should be down by the kick panel on the driverside..See if you smell anything on that side

i would start with some simple things like fuel filter /plugs /plug wires

could be the map or the egr valve, or a vacuum leak, get it installed on a real time scanner not a code scanner,

yes it could be its vacumn pipe that comes from the inlet manifold to the a valve on the injector rail

The fuel pressure is weak,this happens a lot,the fuel filter was restricted ,and stained the fuel pump,this is a common thing,on all makes and models,the fuel pump is in the tank.

you may need the computer from the 351

If its a (holley) motorcraft 2 bbl carb sounds like the power valve. They typically blow out whenever the engine backfires or they just wear out after time and flood the idle circuit.

Hello sheritribbl

The most common problem on a Ford V8 truck is the intake plenum gasket has distorted and maybe causing a major vacuum leak. While idling listen for a high pitched hissing noise. Buy a can of oxygen sensor safe Carburetor Cleaner. With the engine idling, spray around the center of the top half of the engine until you notice a change in the sound of the engine. Keep spraying to try to isolate the source of the leak....Be careful an follow the directions on the can of carb cleaner as to safety precautions...

You need to replace the sensors,,Throttle PositioningSensor, OXYGEN sensors, Mass Air Flow. after which your truck will run nicer and use less fuel.