Problem Description and Possible Solution
Intermittent rough idle may be caused by the EGR sensor sticking, causing the EGR valve to stay slightly open. The valve and sensor must be replaced together to correct this concern.
Average mileage: 137,483 (12,000–263,456)
Exhaust & Emissions affected: 5.4L V8
17 model years affected: 1990
, more1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2010, 2013
100 people reported this problem
Mine runs fine until it gets warm usually 20 30 min of freeway, then when put in reverse or pulling into parking spot, drops to very low idle and sounds like the loudest diesl motor, hit throttl to up idle and back to normal. Have found no one that can tell me where to begin. no engine lights
At Idle my F-150 5.4L runs with an intermittent roughness. Not noticeable on the tachometer but you can feel it. No codes on the OBD. Going to try engine/plug tune-up.
Engine starts vary poorly will not idle and then shuts off, and it smells of heavy gas fumes in the exhaust. Truck was fine yesterday and then this happened.
Having a problem with fuel smell rough idle when stopped but idles, fuel over load is what it smells like when stopped. The truck starts acting up after a good 20 to 25 minutes of driving. act's like
shaking real bad while driving and while idling
2006 F150 5.4 Starts and runs smooth until warming up to operating temp. At this point it starts to idle rough and engine sounds like it's starving for oil. If I raise the rpm it goes away.
Idels very rough ...Bought it NEW. Have maintained very regular...Replaced original IAC...No improvement...My mechanic is at a dead end.....Have not cleaned throttle body as yet. I am thinking it may be the TPS ($42.00)....Need your advice....
when cold everything is good when it warms up and comes to a red light ot stop sign ldles rough and smell of fuel comes from truck when shut off. highway doing 50-70mph also acts like its underpowered until gas is to the floor. but also doesnt like when gas is to the floor dont know rpm because no gauge 1993 ford f150 302 141800 4x4
2010 Ford F150 5.4 Liter. Occurs at low idle rpm in gear. Feels and sounds like the engine is going to blow up and shake the truck apart. Let off and go to neutral and rev a little and it goes away.
clean out the EGR with cimtool.
Truck runs ide and rough driving at the first 2 miles then after 45 miles you can feel the rough running condition.
runs rough at idle rpm is around 800 seems low never had egr checked
making noise at idle like diesel truck and make it vibration I have t hold the throttle I little bit to evade the noise and vibration !
The truck will crank up and drive just fine but after 5-10 minutes of first cranking up sitting in an idle state it starts to idle real rough with RPM dropping down below 400 and bouncing back up to about 550 and idling rough until you hit the gas peddle will do this even worse after running it for 30 minutes it then will die but cranks right back up! Error codes I have gotten from a pocket scan is p0443 and p0720 thanks in advance.
SOUNDS LIKE AN EXHAUST LEAK UNDER DRIVERS SIDE
Once engine is warm it has a rough idle.
terrible at Red lights or stop signs.
Runs ruins rug at idle. And when ac on
just got 94 F150 351 owner said at 20,000 this started to happen , starts fine when getting to just about to hit normal rang on temp. gauge runs rough have to keep hitting throdle slight exhaust noise then runs fine until hot but idles low and smells of fuel it has 96,000 now change most sensers except egr, distributor
EGR code verified for free at Advanced Auto Parts, they can check the codes for free but will not clear them. Autozone also provides this service.