At wit's end with a stalling F150
02-20-2014, 07:59 AM
#1
Junior Member
Thread Starter
At wit's end with a stalling F150
Starting to get a bit desperate here:
Truck: 2009 F150, 4.6 L, 3v, 47k miles, well maintained, driven very easily, combined hi-way and town driving.
Issue: stalls at stop lights, or anywhere I come to a stop, or let off the throttle. SOMETIMES, I can "catch " it before it dies. It is intermittent, does not do it all the time, and runs just fine sometime. No CEL.
Done so far: changed both upstream oxy sensors, the intake manifold runner control, and the Throttle body. (note: the O2 sensors and the IMRC were covered under warranty, the TB was NOT.)
The truck has been in the shop now 3 times, with no improvement in the stalling issue. So far, I have 3-400$ out of pocket, as well as three lost work days (another 1000$ or so). I am getting a bit disgusted, and need some advice! Anyone had same issue and had it fixed?
The dealer seems to want to replace parts until they hit it by accident, but that's getting pricey, especially on a truck which is SUPPOSED to have a 5 yr/60k mile warranty!
Any ideas? Thanks!
Truck: 2009 F150, 4.6 L, 3v, 47k miles, well maintained, driven very easily, combined hi-way and town driving.
Issue: stalls at stop lights, or anywhere I come to a stop, or let off the throttle. SOMETIMES, I can "catch " it before it dies. It is intermittent, does not do it all the time, and runs just fine sometime. No CEL.
Done so far: changed both upstream oxy sensors, the intake manifold runner control, and the Throttle body. (note: the O2 sensors and the IMRC were covered under warranty, the TB was NOT.)
The truck has been in the shop now 3 times, with no improvement in the stalling issue. So far, I have 3-400$ out of pocket, as well as three lost work days (another 1000$ or so). I am getting a bit disgusted, and need some advice! Anyone had same issue and had it fixed?
The dealer seems to want to replace parts until they hit it by accident, but that's getting pricey, especially on a truck which is SUPPOSED to have a 5 yr/60k mile warranty!
Any ideas? Thanks!
02-20-2014, 08:19 AM
#2
Starting to get a bit desperate here:
Truck: 2009 F150, 4.6 L, 3v, 47k miles, well maintained, driven very easily, combined hi-way and town driving.
Issue: stalls at stop lights, or anywhere I come to a stop, or let off the throttle. SOMETIMES, I can "catch " it before it dies. It is intermittent, does not do it all the time, and runs just fine sometime. No CEL.
Done so far: changed both upstream oxy sensors, the intake manifold runner control, and the Throttle body. (note: the O2 sensors and the IMRC were covered under warranty, the TB was NOT.)
The truck has been in the shop now 3 times, with no improvement in the stalling issue. So far, I have 3-400$ out of pocket, as well as three lost work days (another 1000$ or so). I am getting a bit disgusted, and need some advice! Anyone had same issue and had it fixed?
The dealer seems to want to replace parts until they hit it by accident, but that's getting pricey, especially on a truck which is SUPPOSED to have a 5 yr/60k mile warranty!
Any ideas? Thanks!
Truck: 2009 F150, 4.6 L, 3v, 47k miles, well maintained, driven very easily, combined hi-way and town driving.
Issue: stalls at stop lights, or anywhere I come to a stop, or let off the throttle. SOMETIMES, I can "catch " it before it dies. It is intermittent, does not do it all the time, and runs just fine sometime. No CEL.
Done so far: changed both upstream oxy sensors, the intake manifold runner control, and the Throttle body. (note: the O2 sensors and the IMRC were covered under warranty, the TB was NOT.)
The truck has been in the shop now 3 times, with no improvement in the stalling issue. So far, I have 3-400$ out of pocket, as well as three lost work days (another 1000$ or so). I am getting a bit disgusted, and need some advice! Anyone had same issue and had it fixed?
The dealer seems to want to replace parts until they hit it by accident, but that's getting pricey, especially on a truck which is SUPPOSED to have a 5 yr/60k mile warranty!
Any ideas? Thanks!
Just throwing this out there, but have you checked your FPDM?
There has been a rash of reported failures recently - a seasonal thing I reckon.
https://www.f150forum.com/f4/fuel-pu...ummary-130650/
https://www.f150forum.com/f4/rotted-...highlight=fpdm
https://www.f150forum.com/f4/rough-i...highlight=fpdm
I realize the problem is predominantly on 04-08's due to age, but your truck has one too. Just checking it off the list.
good luck
MGD
Last edited by MGD; 02-20-2014 at 08:30 AM.
02-20-2014, 09:18 AM
#5
Senior Member
do these throttle by wire trucks still use an idle air control valve like the old stuff does? If so its probably gummed up
02-20-2014, 10:02 AM
#7
Trending Topics
02-20-2014, 10:05 AM
#8
Has the battery been dead lately? Or disconnected?
Might do the battery relearn process.
Might do the battery relearn process.
02-20-2014, 10:06 AM
#9
Hi.
You can actually unplug those VCT solenoids and the truck will still run fine.
Don't think it's cam timing - think it's fuel.
Recently, on another forum a feller was having similar issues under delta V conditions. Turns out the cracked FPDM was moving/flexing and inducing intermittent fuel pressure fluctuations.
Just a SWAG... lol
MGD
You can actually unplug those VCT solenoids and the truck will still run fine.
Don't think it's cam timing - think it's fuel.
Recently, on another forum a feller was having similar issues under delta V conditions. Turns out the cracked FPDM was moving/flexing and inducing intermittent fuel pressure fluctuations.
Just a SWAG... lol
MGD
02-20-2014, 10:08 AM
#10
